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Transactions with Related Parties, Convertible Promissory Notes - 6K (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 12, 2015
USD ($)
Installment
$ / shares
Dec. 31, 2015
USD ($)
Sep. 30, 2016
USD ($)
Installment
Amendment
$ / shares
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Jun. 16, 2016
USD ($)
Dec. 14, 2015
USD ($)
Dec. 01, 2015
USD ($)
Sep. 07, 2015
USD ($)
$ / shares
Applicable Limit [Abstract]                      
Beginning balance     $ 178,447 $ 0 $ 0            
Additions     9,400 6,800 15,765 $ 0 $ 0        
Ending balance   $ 178,447 178,064   178,447 0          
Accumulated Deficit [Abstract]                      
Amortization of debt discount     688 227 334 0 0        
Partial extinguishment of debt     0 200 200 0 0        
Debt [Abstract]                      
Partial extinguishment of debt     0 (200) (200) 0 0        
Additional Paid-in Capital [Abstract]                      
Intrinsic value of BCF       6,800 15,765            
Intrinsic value of BCF     9,400                
Consideration allocated to repurchase of BCF     0 200 200 0 $ 0        
Unsecured Convertible Promissory Note [Member]                      
Convertible Promissory Notes [Abstract]                      
Convertible promissory notes   4,000     4,000            
Applicable Limit [Abstract]                      
Beginning balance     4,000 0 0            
Additions       4,000              
Ending balance   4,000 4,000 4,000 4,000 0          
Debt Discount [Abstract]                      
Beginning balance     (4,000) 0 0            
Additions       (4,000)              
Ending balance   (4,000) (4,000) (4,000) (4,000) 0          
Accumulated Deficit [Abstract]                      
Beginning balance     103 0 0            
Amortization of debt discount   78 222 225 303            
Partial extinguishment of debt       (200) (200)            
Ending balance   103 325 25 103 0          
Debt [Abstract]                      
Beginning balance     103 0 0            
Amortization (Note 12)   78 222 225              
Partial extinguishment of debt       (200) (200)            
Ending balance   103 325 25 103 0          
Additional Paid-in Capital [Abstract]                      
Beginning balance     3,800 0 0            
Intrinsic value of BCF         4,000            
Consideration allocated to repurchase of BCF       (200) (200)            
Ending balance   3,800 3,800   3,800 0          
Unsecured Revolving Convertible Promissory Note [Member]                      
Convertible Promissory Notes [Abstract]                      
Convertible promissory notes   11,765     11,765            
Applicable Limit [Abstract]                      
Beginning balance     11,765 0 0            
Additions   8,965 9,400 2,800              
Ending balance   11,765 21,165 2,800 11,765 0          
Debt Discount [Abstract]                      
Beginning balance     (11,765) 0 0            
Additions   (8,965) (9,400) (2,800)              
Ending balance   (11,765) (21,165) (2,800) (11,765) 0          
Accumulated Deficit [Abstract]                      
Beginning balance     31 0 0            
Amortization of debt discount   29 466 2 31            
Ending balance   31 497 2 31 0          
Debt [Abstract]                      
Beginning balance     31 0 0            
Amortization (Note 12)   29 466 2              
Ending balance   31 497 2 31 0          
Additional Paid-in Capital [Abstract]                      
Beginning balance     11,765 $ 0 0            
Intrinsic value of BCF         11,765            
Intrinsic value of BCF     9,400                
Ending balance   $ 11,765 $ 21,165   $ 11,765 $ 0          
Jelco [Member] | Unsecured Convertible Promissory Note [Member]                      
Convertible Promissory Notes [Abstract]                      
Convertible promissory notes $ 4,000                    
Number of consecutive payment installments | Installment 10   10                
Frequency of periodic payment     Semi-annual                
Installment payment $ 200   $ 200                
Balloon payment $ 2,000   $ 2,000                
Maturity date Mar. 19, 2020   Mar. 19, 2020                
Conversion price of convertible notes into common stock (in dollars per share) | $ / shares $ 0.90   $ 0.90                
Jelco [Member] | Unsecured Convertible Promissory Note [Member] | Maximum [Member]                      
Convertible Promissory Notes [Abstract]                      
Number of consecutive payment installments that can be deferred | Installment 3   3                
Jelco [Member] | Unsecured Revolving Convertible Promissory Note [Member]                      
Convertible Promissory Notes [Abstract]                      
Conversion price of convertible notes into common stock (in dollars per share) | $ / shares                     $ 0.90
Additional Paid-in Capital [Abstract]                      
Maximum principal amount available to be drawn               $ 21,165 $ 11,765 $ 9,765 $ 6,765
Decrease in Applicable Limit               $ (3,100) $ (2,000)   $ (1,000)
Number of amendments | Amendment     7                
Jelco [Member] | Unsecured Revolving Convertible Promissory Note [Member] | Maximum [Member]                      
Additional Paid-in Capital [Abstract]                      
Tenor of note     5 years   5 years