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Segment Reporting and Geographic Information - Revenues, Accounts Receivable and Unbilled Revenue from Major Customers (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Customer A [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance $ 1,828 $ 2,701
Major Customer balance percentage 21.00% 14.00%
Customer A [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]
Major Customer balance percentage [1],[2]
Customer A [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]  
Major Customer balance percentage [1],[2]  
Customer B [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1] $ 2,735
Major Customer balance percentage [1] 14.00%
Customer B [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2] [1] $ 1,844
Major Customer balance percentage [2] [1] 28.00%
Customer B [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2]   $ 1,507
Major Customer balance percentage [2]   39.00%
Customer C [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1] $ 2,889
Major Customer balance percentage [1] 15.00%
Customer C [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2] [1] $ 1,049
Major Customer balance percentage [2] [1] 16.00%
Customer C [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2]   $ 1,087
Major Customer balance percentage [2]   28.00%
Customer D [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance $ 1,295 $ 2,200
Major Customer balance percentage 15.00% 12.00%
Customer D [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2] [1] $ 834
Major Customer balance percentage [2] [1] 12.00%
Customer D [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]  
Major Customer balance percentage [1],[2]  
Customer E [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1]
Major Customer balance percentage [1]
Customer E [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2] [1] $ 1,112
Major Customer balance percentage [2] [1] 17.00%
Customer E [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]  
Major Customer balance percentage [1],[2]  
Customer F [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1]
Major Customer balance percentage [1]
Customer F [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]
Major Customer balance percentage [1],[2]
Customer F [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2]   $ 408
Major Customer balance percentage [2]   11.00%
Customer G [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [3] [1]
Major Customer balance percentage [3] [1]
Customer G [Member] | Accounts Receivable [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [2] $ 283 [1]
Major Customer balance percentage [2] 28.00% [1]
Customer G [Member] | Unbilled Revenues [Member]    
Revenue, Major Customer [Line Items]    
Major Customer balance [1],[2]  
Major Customer balance percentage [1],[2]  
[1] Balance is not significant
[2] Following the closing of the DSIT Transaction (see Note 3), the Company no longer consolidates the assets, liabilities or results of DSIT, but rather reports its investment in DSIT using the equity method. Accordingly, the Company no longer reports DSIT's Accounts Receivable or Unbilled Revenue balances.
[3] Includes $239 and $582 of stock compensation expense for the years ended December 31, 2016 and 2015, respectively. Also includes $446 and $225 of interest expense associated with the LT Loan for the years ended December 31, 2016 and 2015, respectively (see Note 5).