Segment Information (Schedule of Segment Information) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
|
| Revenue | |||||
| Product revenue, net | $ 17,025,000 | $ 14,629,000 | $ 45,173,000 | $ 42,514,000 | |
| Other revenue | 606,000 | 2,010,000 | |||
| Net revenue | 17,631,000 | 14,629,000 | 47,183,000 | 42,555,000 | |
| Operating expenses | |||||
| Cost of goods | 5,755,000 | 4,471,000 | 15,484,000 | 16,199,000 | |
| Intangible assets amortization | 1,064,000 | 814,000 | 3,193,000 | 2,443,000 | |
| Research and development | 208,000 | 9,446,000 | 12,268,000 | 46,941,000 | |
| Selling, general and administrative | 17,415,000 | 21,993,000 | 81,670,000 | 60,867,000 | |
| Asset impairment | 2,649,000 | ||||
| Total operating expenses | 24,442,000 | 36,724,000 | 112,615,000 | 129,099,000 | |
| Loss from operations | (6,811,000) | (22,095,000) | (65,432,000) | (86,544,000) | |
| Other income (expense) | |||||
| Interest income | 736,000 | 589,000 | 1,848,000 | 2,157,000 | |
| Interest expense and financing fee | (2,742,000) | (6,209,000) | (8,065,000) | (10,933,000) | |
| Gain (loss) on common stock warrant liabilities | (2,000) | 19,000 | (399,000) | (578,000) | |
| Gain from deconsolidation of subsidiary | 27,127,000 | 0 | |||
| Other income | 17,672,000 | 1,071,000 | 17,599,000 | 1,334,000 | |
| Total other income (expense) | 15,664,000 | (4,530,000) | 38,110,000 | (8,020,000) | |
| Income (loss) before income tax expense | 8,853,000 | (26,625,000) | (27,322,000) | (94,564,000) | |
| Income tax expense (refund) | 26,000 | 69,000 | 196,000 | (24,000) | |
| Net income (loss) | 8,827,000 | (26,694,000) | (27,518,000) | (94,540,000) | |
| Attributable to non-controlling interests | (2,977,000) | 13,827,000 | 38,270,000 | 55,308,000 | |
| Net income (loss) attributable to Fortress | 5,850,000 | (12,867,000) | 10,752,000 | (39,232,000) | |
| Other Significant Items | |||||
| Equity method investment held by Urica | 15,075,000 | 15,075,000 | |||
| Segment assets | 181,407,000 | 127,085,000 | 181,407,000 | 127,085,000 | $ 144,223,000 |
| Stock-based compensation - Research & development | 152,000 | 1,216,000 | 6,245,000 | 2,943,000 | |
| Stock-based compensation - Selling, general and administrative | 3,045,000 | 5,357,000 | $ 20,035,000 | 13,486,000 | |
| Number of reportable segments not disclosed flag | true | ||||
| Journey | |||||
| Revenue | |||||
| Product revenue, net | 17,025,000 | 14,629,000 | $ 45,173,000 | 42,514,000 | |
| Other revenue | 606,000 | 606,000 | |||
| Net revenue | 17,631,000 | 14,629,000 | 45,779,000 | 42,514,000 | |
| Operating expenses | |||||
| Cost of goods | 5,755,000 | 4,471,000 | 15,484,000 | 16,199,000 | |
| Intangible assets amortization | 1,064,000 | 814,000 | 3,193,000 | 2,443,000 | |
| Research and development | 287,000 | 842,000 | 326,000 | 9,639,000 | |
| Selling, general and administrative | 12,054,000 | 11,396,000 | 34,505,000 | 30,144,000 | |
| Total operating expenses | 19,160,000 | 17,523,000 | 53,508,000 | 58,425,000 | |
| Loss from operations | (1,529,000) | (2,894,000) | (7,729,000) | (15,911,000) | |
| Other income (expense) | |||||
| Interest income | 154,000 | 188,000 | 441,000 | 566,000 | |
| Interest expense and financing fee | (937,000) | (758,000) | (2,765,000) | (1,869,000) | |
| Other income | (3,000) | 1,074,000 | (71,000) | 1,021,000 | |
| Total other income (expense) | (786,000) | 504,000 | (2,395,000) | (282,000) | |
| Income (loss) before income tax expense | (2,315,000) | (2,390,000) | (10,124,000) | (16,193,000) | |
| Income tax expense (refund) | 60,000 | ||||
| Net income (loss) | (2,315,000) | (2,390,000) | (10,184,000) | (16,193,000) | |
| Other Significant Items | |||||
| Segment assets | 85,191,000 | 64,044,000 | 85,191,000 | 64,044,000 | |
| Stock-based compensation - Research & development | 150,000 | 466,000 | |||
| Stock-based compensation - Selling, general and administrative | 1,854,000 | 1,490,000 | 4,513,000 | 4,254,000 | |
| Avenue | |||||
| Revenue | |||||
| Other revenue | 1,404,000 | ||||
| Net revenue | 1,404,000 | ||||
| Operating expenses | |||||
| Research and development | 177,000 | 2,327,000 | 780,000 | 6,080,000 | |
| Selling, general and administrative | 547,000 | 829,000 | 2,955,000 | 3,607,000 | |
| Total operating expenses | 724,000 | 3,156,000 | 3,735,000 | 9,687,000 | |
| Loss from operations | (724,000) | (3,156,000) | (2,331,000) | (9,687,000) | |
| Other income (expense) | |||||
| Interest income | 34,000 | 51,000 | 96,000 | 152,000 | |
| Gain (loss) on common stock warrant liabilities | (2,000) | 18,000 | 14,000 | (759,000) | |
| Other income | 157,000 | ||||
| Total other income (expense) | 32,000 | 69,000 | 110,000 | (450,000) | |
| Income (loss) before income tax expense | (692,000) | (3,087,000) | (2,221,000) | (10,137,000) | |
| Net income (loss) | (692,000) | (3,087,000) | (2,221,000) | (10,137,000) | |
| Other Significant Items | |||||
| Segment assets | 3,725,000 | 2,625,000 | 3,725,000 | 2,625,000 | |
| Stock-based compensation - Research & development | 31,000 | 89,000 | 102,000 | 179,000 | |
| Stock-based compensation - Selling, general and administrative | 132,000 | 242,000 | 421,000 | 535,000 | |
| Checkpoint | |||||
| Revenue | |||||
| Net revenue | 41,000 | ||||
| Operating expenses | |||||
| Research and development | 6,366,000 | 10,775,000 | 19,343,000 | ||
| Selling, general and administrative | 3,358,000 | 27,263,000 | 8,043,000 | ||
| Total operating expenses | 9,724,000 | 38,038,000 | 27,386,000 | ||
| Loss from operations | (9,724,000) | (38,038,000) | (27,345,000) | ||
| Other income (expense) | |||||
| Interest income | 2,000 | 90,000 | 9,000 | ||
| Gain (loss) on common stock warrant liabilities | (108,000) | ||||
| Other income | (3,000) | (3,000) | (4,000) | ||
| Total other income (expense) | (1,000) | (21,000) | 5,000 | ||
| Income (loss) before income tax expense | (9,725,000) | (38,059,000) | (27,340,000) | ||
| Net income (loss) | (9,725,000) | (38,059,000) | (27,340,000) | ||
| Other Significant Items | |||||
| Segment assets | 5,179,000 | 5,179,000 | |||
| Stock-based compensation - Research & development | 543,000 | 4,782,000 | 1,629,000 | ||
| Stock-based compensation - Selling, general and administrative | 1,068,000 | 9,315,000 | 1,862,000 | ||
| Mustang | |||||
| Operating expenses | |||||
| Research and development | (333,000) | 57,000 | (1,199,000) | 8,221,000 | |
| Selling, general and administrative | 957,000 | 1,400,000 | 2,961,000 | 4,358,000 | |
| Asset impairment | 2,649,000 | ||||
| Total operating expenses | 624,000 | 1,457,000 | 1,762,000 | 15,228,000 | |
| Loss from operations | (624,000) | (1,457,000) | (1,762,000) | (15,228,000) | |
| Other income (expense) | |||||
| Interest income | 156,000 | 48,000 | 379,000 | 314,000 | |
| Interest expense and financing fee | (1,000) | 118,000 | |||
| Other income | (4,000) | ||||
| Total other income (expense) | 156,000 | 47,000 | 379,000 | 428,000 | |
| Income (loss) before income tax expense | (468,000) | (1,410,000) | (1,383,000) | (14,800,000) | |
| Net income (loss) | (468,000) | (1,410,000) | (1,383,000) | (14,800,000) | |
| Other Significant Items | |||||
| Segment assets | 19,361,000 | 7,193,000 | 19,361,000 | 7,193,000 | |
| Stock-based compensation - Research & development | 1,000 | (10,000) | (10,000) | (650,000) | |
| Stock-based compensation - Selling, general and administrative | 22,000 | 52,000 | 116,000 | 150,000 | |
| Fortress | |||||
| Operating expenses | |||||
| Research and development | 77,000 | (146,000) | 1,586,000 | 3,658,000 | |
| Selling, general and administrative | 3,857,000 | 5,010,000 | 13,986,000 | 14,715,000 | |
| Total operating expenses | 3,934,000 | 4,864,000 | 15,572,000 | 18,373,000 | |
| Loss from operations | (3,934,000) | (4,864,000) | (15,572,000) | (18,373,000) | |
| Other income (expense) | |||||
| Interest income | 392,000 | 300,000 | 842,000 | 1,116,000 | |
| Interest expense and financing fee | (1,805,000) | (5,450,000) | (5,300,000) | (9,182,000) | |
| Gain (loss) on common stock warrant liabilities | 1,000 | (305,000) | 181,000 | ||
| Gain from deconsolidation of subsidiary | 27,127,000 | ||||
| Other income | 17,675,000 | 17,673,000 | 164,000 | ||
| Total other income (expense) | 16,262,000 | (5,149,000) | 40,037,000 | (7,721,000) | |
| Income (loss) before income tax expense | 12,328,000 | (10,013,000) | 24,465,000 | (26,094,000) | |
| Income tax expense (refund) | 26,000 | 69,000 | 136,000 | (24,000) | |
| Net income (loss) | 12,302,000 | (10,082,000) | 24,329,000 | (26,070,000) | |
| Other Significant Items | |||||
| Equity method investment held by Urica | 15,075,000 | 15,075,000 | |||
| Segment assets | 73,131,000 | 48,044,000 | 73,131,000 | 48,044,000 | |
| Stock-based compensation - Research & development | 120,000 | 444,000 | 1,371,000 | 1,319,000 | |
| Stock-based compensation - Selling, general and administrative | 1,037,000 | 2,505,000 | 5,670,000 | 6,685,000 | |
| Related Party | |||||
| Revenue | |||||
| Revenue - related party | 41,000 | ||||
| Related Party | Checkpoint | |||||
| Revenue | |||||
| Revenue - related party | 41,000 | ||||
| Intersegment Eliminations | Avenue | |||||
| Operating expenses | |||||
| Research and development | 63,000 | 63,000 | 188,000 | 188,000 | |
| Selling, general and administrative | 63,000 | 63,000 | 242,000 | 372,000 | |
| Intersegment Eliminations | Checkpoint | |||||
| Operating expenses | |||||
| Selling, general and administrative | 125,000 | 261,000 | 1,090,000 | ||
| Intersegment Eliminations | Mustang | |||||
| Operating expenses | |||||
| Research and development | 63,000 | 63,000 | 125,000 | 188,000 | |
| Selling, general and administrative | 242,000 | 242,000 | 519,000 | 379,000 | |
| Intersegment Eliminations | Fortress | |||||
| Operating expenses | |||||
| Research and development | (125,000) | (125,000) | (313,000) | (376,000) | |
| Selling, general and administrative | $ (304,000) | $ (429,000) | $ (1,022,000) | $ (1,841,000) | |
| X | ||||||||||
- Definition Amount of gain (loss) on common stock warrant liabilities. No definition available.
|
| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense and amount of debt issuance costs. No definition available.
|
| X | ||||||||||
- Definition Indicates that the number of reportable segments not disclosed flag. No definition available.
|
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement relating to research and development division. Excludes amount capitalized. No definition available.
|
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement relating to selling, general and administration of the company as a whole. Excludes amount capitalized. No definition available.
|
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of revenue and income classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for research and development. Excludes cost for computer software product to be sold, leased, or otherwise marketed, writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both, and write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of revenue that is not accounted for under Topic 606. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|