Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Debt and Interest - Schedule of Interest Expenses for Debt Arrangements (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Debt [Line Items]    
Financing fee $ 4 $ 0
Total Interest Expense and Financing Fee 698 620
LOC Fees [Member]    
Debt [Line Items]    
Interest 8 4
Interest and Debt Expense 8 4
IDB Note [Member]    
Debt [Line Items]    
Interest 82 80
Amortization of fees 0 1
Interest and Debt Expense 82 81
NSC Debt [Member]    
Debt [Line Items]    
Interest 71 167
Amortization of fees 38 368
Interest and Debt Expense 109 535
Opus Credit Facility [Member]    
Debt [Line Items]    
Interest 232 0
Amortization of fees 208 0
Interest and Debt Expense 440 0
Helocyte Convertible Note [Member]    
Debt [Line Items]    
Interest 54 0
Financing fee 1 0
Interest and Debt Expense 55 0
Avenue Convertible Note [Member]    
Debt [Line Items]    
Financing fee 3 0
Interest and Debt Expense 3 0
D&O Insurance [Member]    
Debt [Line Items]    
Interest 1 0
Interest and Debt Expense $ 1 $ 0