Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Debt and Interest - Schedule of Interest Expenses for Debt Arrangements (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Debt [Line Items]        
Total Interest Expense and Financing Fee $ 3,220 $ 689 $ 5,298 $ 1,838
LOC Fees [Member]        
Debt [Line Items]        
Interest 7 3 22 10
Interest and Debt Expense 7 3 22 10
IDB Note [Member]        
Debt [Line Items]        
Interest 85 84 254 243
Amortization of fees 0 0 0 1
Interest and Debt Expense 85 84 254 244
NSC Debt [Member]        
Debt [Line Items]        
Interest (8) 145 147 456
Amortization of fees 127 135 200 557
Interest and Debt Expense 119 280 347 1,013
2017 Subordinated Note [Member]        
Debt [Line Items]        
Interest 755 0 1,161 0
Amortization of fees 208 0 383 0
Interest and Debt Expense 963 0 1,544 0
Opus Credit Facility [Member]        
Debt [Line Items]        
Interest 287 26 798 26
Amortization of fees 282 28 733 28
Interest and Debt Expense 569 54 1,531 54
Avenue Convertible Note [Member]        
Debt [Line Items]        
Interest 0 0 5 0
Financing fee 0 0 3 0
Interest and Debt Expense 0 0 8 0
Helocyte Convertible Note [Member]        
Debt [Line Items]        
Interest 64 26 175 26
Financing fee 0 242 1 491
Interest and Debt Expense 64 268 176 517
D&O Insurance [Member]        
Debt [Line Items]        
Interest 2 0 5 0
Interest and Debt Expense 2 0 5 0
Caelum Convertible Notes [Member]        
Debt [Line Items]        
Interest 68 0 68 0
Financing fee 1,317 0 1,317 0
Interest and Debt Expense 1,385 0 1,385 0
Falk CSR [Member]        
Debt [Line Items]        
Interest 26 0 26 0
Interest and Debt Expense $ 26 $ 0 $ 26 $ 0