Quarterly report pursuant to Section 13 or 15(d)

Debt and Interest - Schedule of Interest Expenses for Debt Arrangements (Detail)

v3.10.0.1
Debt and Interest - Schedule of Interest Expenses for Debt Arrangements (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Debt [Line Items]        
Total Interest Expense and Financing Fee $ 2,144 $ 1,380 $ 4,227 $ 2,078
LOC Fees [Member]        
Debt [Line Items]        
Interest 9 7 16 15
Interest and Debt Expense 9 7 16 15
IDB Note [Member]        
Debt [Line Items]        
Interest 85 87 169 169
Interest and Debt Expense 85 87 169 169
NSC Debt [Member]        
Debt [Line Items]        
Interest 0 84 0 155
Amortization of fees 0 40 0 73
Interest and Debt Expense 0 124 0 228
2017 Subordinated Note Financing [Member]        
Debt [Line Items]        
Interest 1,049 406 2,097 406
Amortization of fees 30 175 51 175
Interest and Debt Expense 1,079 581 2,148 581
Opus Credit Facility [Member]        
Debt [Line Items]        
Interest 284 276 565 508
Amortization of fees 101 241 420 454
Interest and Debt Expense 385 517 985 962
2018 Venture Notes [Member]        
Debt [Line Items]        
Interest 429 0 485 0
Amortization of fees 9 0 10 0
Interest and Debt Expense 438 0 495 0
Helocyte Convertible Note [Member]        
Debt [Line Items]        
Interest 19 57 87 111
Financing fee 0 0 0 1
Interest and Debt Expense 19 57 87 112
Avenue Convertible Note [Member]        
Debt [Line Items]        
Interest 0 5 0 5
Financing fee 0 0 0 3
Interest and Debt Expense 0 5 0 8
Caelum Convertible Notes [Member]        
Debt [Line Items]        
Interest 195 0 391 0
Interest and Debt Expense 195 0 391 0
Falk CSR [Member]        
Debt [Line Items]        
Interest (66) 0 (64) 0
Interest and Debt Expense (66) 0 (64) 0
D&O Insurance [Member]        
Debt [Line Items]        
Interest 0 2 0 3
Interest and Debt Expense $ 0 $ 2 $ 0 $ 3