Accounts Receivable/Advances on Contracts in Progress (Tables)

6 Months Ended

Jun. 30, 2013

Accounts Receivable and Advances on Contracts in Progress [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

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

(in thousands)	June 30, 2013			December 31, 2012
Amounts billed	$	1,265		$	1,927
Accrued revenue	234			238
Gross accounts receivable - trade	1,499			2,165
Less:  Allowance for doubtful accounts	(46		)	(28		)
Net accounts receivable - trade	$	1,453		$	2,137
Advances on contracts in progress	$	1,175		$	1,037