Accounts Receivable/Advances on Contracts in Progress (Tables)

3 Months Ended

Mar. 31, 2014

Accounts Receivable and Advances on Contracts in Progress [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

Net accounts receivable, trade and advances on contracts in progress consists of the following:

(in thousands)	March 31, 2014			December 31, 2013
Amounts billed	$	1,781		$	1,396
Accrued revenue	18			18
Gross accounts receivable - trade	1,799			1,414
Less:  Allowance for doubtful accounts	(32		)	—
Net accounts receivable - trade	$	1,767		$	1,414
Advances on contracts in progress	$	1,525		$	1,433