Annual report pursuant to Section 13 and 15(d)

Debt and Interest - Long-term debt (Detail)

v3.8.0.1
Debt and Interest - Long-term debt (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Jul. 31, 2016
Mar. 31, 2015
Debt [Line Items]        
Total notes payable, long-term $ 67,544 $ 30,224    
Less: Discount of notes payable 1,035 2,009    
Total notes payable $ 66,509 28,215    
Interest Rate 28.00%      
Maturity Date May - 2018      
IDB Note [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 14,929 14,929    
Interest Rate 2.25%      
Maturity Date Aug - 2020      
NSC Note [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 0 $ 3,608    
Less: Discount of notes payable     $ 600  
Total notes payable       $ 10,000
Interest Rate 8.00% 8.00%    
Maturity Date Sep - 2018      
2017 Subordinated Note Financing One [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 3,254 $ 0    
Interest Rate 8.00%      
Maturity Date March - 2020      
2017 Subordinated Note Financing One [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate 5.00%      
2017 Subordinated Note Financing One [Member] | Maximum [Member]        
Debt [Line Items]        
Interest Rate 8.00%      
2017 Subordinated Note Financing Two [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 13,893 0    
Interest Rate 8.00%      
Maturity Date May - 2020      
2017 Subordinated Note Financing Two [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate 5.00%      
2017 Subordinated Note Financing Two [Member] | Maximum [Member]        
Debt [Line Items]        
Interest Rate 8.00%      
2017 Subordinated Note Financing Three [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 1,820 0    
Interest Rate 8.00%      
Maturity Date June - 2020      
2017 Subordinated Note Financing Three [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate 5.00%      
2017 Subordinated Note Financing Three [Member] | Maximum [Member]        
Debt [Line Items]        
Interest Rate 8.00%      
2017 Subordinated Note Financing Four [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 3,018 0    
Interest Rate 8.00%      
Maturity Date August - 2020      
2017 Subordinated Note Financing Four [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate 5.00%      
2017 Subordinated Note Financing Four [Member] | Maximum [Member]        
Debt [Line Items]        
Interest Rate 8.00%      
2017 Subordinated Note Financing Five [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 6,371 0    
Interest Rate 8.00%      
Maturity Date September - 2020      
2017 Subordinated Note Financing Five [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate 5.00%      
2017 Subordinated Note Financing Five [Member] | Maximum [Member]        
Debt [Line Items]        
Interest Rate 8.00%      
Opus Credit Facility [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 9,500 7,000    
Interest Rate 12.00%      
Maturity Date Sep - 2018      
Helocyte Convertible Note One [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 1,000 $ 1,031    
Maturity Date December 2017      
Helocyte Convertible Note One [Member] | Minimum [Member]        
Debt [Line Items]        
Interest Rate   5.00%    
Helocyte Convertible Note Two [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 2,194 $ 2,051    
Maturity Date March - 2018      
Helocyte Convertible Note Three [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 1,062 991    
Maturity Date April - 2018      
Helocyte Convertible Note Four [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 444 414    
Avenue Convertible Note [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 0 200    
Maturity Date June - 2018      
Caelum Convertible Note One [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 1,017 0    
Interest Rate 8.00%      
Maturity Date January - 2019      
Caelum Convertible Note Two [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 6,900 0    
Interest Rate 8.00%      
Maturity Date February - 2019      
Caelum Convertible Note Three [Member]        
Debt [Line Items]        
Total notes payable, long-term $ 2,142 $ 0    
Interest Rate 8.00%      
Maturity Date June - 2019