Stockholders' Equity (Capital Raises) (Narrative) (Details)

v3.23.3

Stockholders' Equity (Capital Raises) (Narrative) (Details)									1 Months Ended								3 Months Ended		9 Months Ended
	Nov. 14, 2023 USD ($)	May 05, 2023 USD ($)	Feb. 10, 2023 USD ($) item $ / shares shares	Jan. 27, 2023 shares	Dec. 30, 2022 USD ($) shares	Oct. 11, 2022 USD ($) item $ / shares shares	Apr. 23, 2021 USD ($)	Oct. 23, 2020 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Jul. 31, 2023 USD ($) $ / shares shares	May 31, 2023 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) $ / shares shares	Feb. 28, 2023 USD ($) $ / shares shares	Jan. 31, 2023 USD ($) $ / shares shares	Nov. 30, 2020 USD ($)	Jul. 31, 2018	Sep. 30, 2023 USD ($) $ / shares	Feb. 28, 2023 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Jun. 13, 2023 $ / shares	Dec. 31, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares					4,900,000								1,180,000
Number of shares called by warrants | shares													1					1
Stock offering, price per share | $ / shares													$ 5.25					$ 5.25
Common Stock, par value | $ / shares									$ 0.001								$ 0.001		$ 0.001			$ 0.001
Exercise price of warrants | $ / shares																					$ 8.136
Sale of stock, net proceeds	$ 8,900,000				$ 150,000,000					$ 9,100,000			$ 6,700,000
Proceeds from Issuance of Common Stock																			$ 2,056,000	$ 5,750,000
Gain (loss) on common stock warrant liabilities																	$ (4,542,000)		(10,708,000)
Pre-Funded Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants issued | shares													248,572
Stock offering, price per share | $ / shares													$ 5.2499					$ 5.2499
Series A Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares													1,428,572
Series B Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares													1,428,572
Checkpoint | Common Stock Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Gain (loss) on common stock warrant liabilities																			$ 9,200,000
Checkpoint | Series A Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term												5 years
Checkpoint | Series B Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term												18 months
Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares				448,000
Shares issued | shares						3,636,365
Number of warrants to purchase shares | shares						545,454
Number of common stock (in units) | item						1
Number of warrants (in units) | item						1
Proceeds from Issuance of Common Stock						$ 10,300,000
Avenue | InvaGen [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares repurchased						100.00%
Purchase price of shares repurchased						$ 3,000,000
Avenue | Pre-Funded Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants | $ / shares						$ 0.0001
Unit Price Per Share | $ / shares						$ 3.2999
Number of warrants (in units) | item						1
Avenue | Common Stock and Pre-funded Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit Price Per Share | $ / shares						$ 3.30
Number of warrants (in units) | item						1
Avenue | January 2023 Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants | shares														1
Urica | Convertible Class B Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares																		135,494
Stock offering, price per share | $ / shares													$ 25.00					$ 25.00
Stock offering, gross proceeds																		$ 3,400,000
Stock offering, aggregate fees paid																		$ 500,000
Preferred Stock, dividend rate percentage																		8.00%
At the Market Offering [Member] | MLV & Co. and FBR Capital Markets & Co [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares																			200,000	300,000
At the Market Offering [Member] | Common Stock [Member] | Cantor Fitzgerald & Co., Oppenheimer & Co., Inc., H.C. Wainwright & Co. Inc., Jones Trading Institutional Services LLC. B. Riley and Dawson James Securities, Inc [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, price per share | $ / shares									9.61								$ 9.61		$ 9.61	$ 23.85
Stock offering, gross proceeds																			$ 2,200,000	$ 5,900,000
At the Market Offering [Member] | Checkpoint | Common Stock [Member] | Founders Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares																			240,526
Share Price | $ / shares									3.36								3.36		$ 3.36
Shares issued (in percent)																			2.50%
At the Market Offering [Member] | Mustang | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares																			52,000,000,000	500,000
Stock offering, price per share | $ / shares									$ 3.15								$ 3.15		$ 3.15	$ 12.61
Stock offering, gross proceeds																			$ 200,000	$ 6,600,000
Stock offering, aggregate fees paid																			100,000
At the Market Offering [Member] | Mustang | Common Stock [Member] | Founders Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares																				13,131
Stock offering, price per share | $ / shares																				$ 13.56
Number of Shares issuable for At-the-Market offering | shares																				1,297
Shelf Registration Statement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings									$ 110,100,000								$ 110,100,000		110,100,000
Shelf Registration Statement [Member] | Checkpoint | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued | shares												1,700,000
Shelf Registration Statement [Member] | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, commission rate																3.00%
Shelf Registration Statement [Member] | Maximum | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement							$ 200,000,000
Shelf Registration 2020 Statement [Member] | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings									8,700,000								8,700,000		8,700,000
Shelf Registration 2020 Statement [Member] | Maximum | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement															$ 100,000,000
Shelf Registration 2023 Statement [Member] | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings									91,700,000								91,700,000		91,700,000
Shelf Registration 2023 Statement [Member] | Maximum | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement		$ 150,000,000
Mustang 2020 S-3 [Member] | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement								$ 100,000,000.0
Amount available for future stock offerings									$ 7,800,000								$ 7,800,000		$ 7,800,000
Direct Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares			1,100,000
Stock offering, price per share | $ / shares			$ 12.53
Proceeds from Issuance of Common Stock			$ 13,200,000
Percentage of company subsidiaries			3.50%
Number of new operating subsidiaries | item			20
Threshold period of corporate development transaction			5 years
Exercisable period			10 years
Shares Exercisable Fair Market Value Number Of Shares Equivalent | shares			1
Direct Offering [Member] | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants | $ / shares												$ 3.35
Stock offering, gross proceeds										10,000,000.0
Stock offering, aggregate fees paid										$ 900,000
Direct Offering [Member] | Checkpoint | Pre-Funded Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants issued | shares										809,062
Offering price per share | $ / shares										$ 3.0899
Direct Offering [Member] | Checkpoint | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares										2,427,186	1,650,000	1,700,000
Share Price | $ / shares										$ 3.09
Stock offering, price per share | $ / shares											$ 3.071	$ 3.60
Stock offering, gross proceeds											$ 10,000,000.0
Net proceeds											9,100,000
Placement agent fees											$ 900,000
Direct Offering [Member] | Checkpoint | Common Stock [Member] | Pre-Funded Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares | shares											1,606,269
Stock offering, price per share | $ / shares											$ 3.0709
Direct Offering [Member] | Checkpoint | Common Stock [Member] | Common Stock and Pre-funded Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per share price of warrants | $ / shares											$ 2.821
Direct Offering [Member] | Checkpoint | Common Stock [Member] | Series A Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares | shares										3,236,248	3,256,269
Exercise price of warrants | $ / shares										$ 2.84
Warrant expiration term										5 years	5 years
Direct Offering [Member] | Checkpoint | Common Stock [Member] | Series B Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares | shares										3,236,248	3,256,269
Exercise price of warrants | $ / shares										$ 2.84
Warrant expiration term										18 months	18 months
Registered Offering | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued | shares														448,000
Share Price | $ / shares														$ 1.55
Gross proceeds														$ 3,000,000.0
Registered Offering | Avenue | Pre-Funded Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants | shares														1,492,299
Offering price per share | $ / shares														$ 0.001
Exercise price of warrants | $ / shares														$ 0.001
Private Placement | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued | shares									767,085
Share Price | $ / shares									$ 0.717								$ 0.717		$ 0.717
Common Stock, par value | $ / shares									$ 0.0001								$ 0.0001		$ 0.0001
Proceeds from Issuance of Common Stock									$ 550,000
Private Placement | Avenue | January 2023 Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants | shares														1,940,299
Offering price per share | $ / shares														$ 0.125
Warrant expiration term														3 years
Net proceeds														$ 200,000
Concurrent Private Placement [Member] | Checkpoint | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, gross proceeds												$ 6,100,000
Net proceeds												5,500,000
Placement agent fees												$ 600,000
Concurrent Private Placement [Member] | Checkpoint | Common Stock [Member] | Series A Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares												1,700,000
Concurrent Private Placement [Member] | Checkpoint | Common Stock [Member] | Series B Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued | shares												1,700,000