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Bank Debt and Other Debt - Summary of Bank Debt and Other Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Total bank debt and borrowings against receivables $ 2,054 $ 4,495
Less non-current portion 76
Short-term bank credit and current maturities of long-term debt $ 2,054 4,419
DSIT Line-of-credit [Member]    
Total bank debt and borrowings against receivables 979 2,169
DSIT Borrowings Against Receivables [Member]    
Total bank debt and borrowings against receivables $ 862 262
GridSense Line-of-Credit [Member]    
Total bank debt and borrowings against receivables 1,480
GridSense Borrowings Against Receivables [Member]    
Total bank debt and borrowings against receivables $ 138 379
DSIT Term Loan [Member]    
Total bank debt and borrowings against receivables $ 75 $ 205