Annual report pursuant to Section 13 and 15(d)

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

v3.19.1
Debt and Interest - Schedule of Interest Expenses for Debt Arrangements (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Debt [Line Items]    
Interest $ 7,921 $ 4,442
Amortization of fees [1] 2,419 3,141
Financing fee   104
Interest and Debt Expense 10,340 7,687
LOC Fees [Member]    
Debt [Line Items]    
Interest 30 36
Amortization of fees [1] 0 0
Financing fee   0
Interest and Debt Expense 30 36
IDB Note [Member]    
Debt [Line Items]    
Interest 341 340
Amortization of fees [1] 0 0
Financing fee   0
Interest and Debt Expense 341 340
NSC Debt [Member]    
Debt [Line Items]    
Interest 0 147
Amortization of fees [1] 0 201
Financing fee   0
Interest and Debt Expense 0 348
2017 Subordinated Note [Member]    
Debt [Line Items]    
Interest 4,217 2,234
Amortization of fees [1] 1,363 686
Financing fee   0
Interest and Debt Expense 5,580 2,920
Opus Credit Facility [Member]    
Debt [Line Items]    
Interest 1,141 1,085
Amortization of fees [1] 636 1,037
Financing fee   0
Interest and Debt Expense 1,777 2,122
Venture Debt [Member]    
Debt [Line Items]    
Interest 1,364 0
Amortization of fees [1] 420 0
Financing fee   0
Interest and Debt Expense 1,784 0
Helocyte Convertible Note [Member]    
Debt [Line Items]    
Interest 94 261
Amortization of fees [1] 0 0
Financing fee   1
Interest and Debt Expense 94 262
Avenue Convertible Note [Member]    
Debt [Line Items]    
Interest 0 5
Amortization of fees [1] 0 0
Financing fee   3
Interest and Debt Expense 0 8
Caelum Convertible Note [Member]    
Debt [Line Items]    
Interest 787 265
Amortization of fees [1] 0 1,217
Financing fee   100
Interest and Debt Expense 787 1,582
Falk CSR [Member]    
Debt [Line Items]    
Interest (64) 64
Amortization of fees [1] 0 0
Financing fee   0
Interest and Debt Expense (64) 64
Other [Member]    
Debt [Line Items]    
Interest 11 5
Amortization of fees [1] 0 0
Financing fee   0
Interest and Debt Expense $ 11 $ 5
[1] Amortization of fees