General form of registration statement for all companies including face-amount certificate companies

Debt - Schedule of Future Principal Payments on Debt (Details) (10-K)

v3.8.0.1
Debt - Schedule of Future Principal Payments on Debt (Details) (10-K) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Line of Credit Facility [Line Items]      
Total future principal payments   $ 7,012 $ 16,365
Hercules Term Loan [Member]      
Line of Credit Facility [Line Items]      
Total future principal payments $ 2,319 7,012 $ 734
Hercules Term Loan [Member] | Convertible Notes Payable [Member]      
Line of Credit Facility [Line Items]      
2017, net   6,779  
2018, net   642  
Total future principal payments   $ 7,421