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Accounts Receivable/Advances on Contracts in Progress (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Accounts Receivable and Advances on Contracts in Progress [Abstract]    
Amounts billed $ 1,688 $ 1,396
Accrued revenue 41 18
Gross accounts receivable - trade 1,729 1,414
Less: Allowance for doubtful accounts (32) 0
Net accounts receivable - trade 1,697 1,414
Advances on contracts in progress $ 2,301 $ 1,433