Contract Receivables and Billings in Excess of Revenue Recognized

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note 2. Contract Receivables and Billings in Excess of Revenue Recognized

At June 30, 2017 and December 31, 2016, contract receivables consist of the following (in thousands):

	June 30, 2017		December 31, 2016
Billed accounts receivable	$	16,489	$	21,588
Unbilled accounts receivable		12,775		7,262
		29,264		28,850
Less: allowance for doubtful accounts		(84)		(66)
	$	29,180	$	28,784

Billings in excess of revenue recognized as of June 30, 2017 and December 31, 2016, are comprised primarily of billings from firm fixed-price contacts, where revenue is recognized in accordance with the proportional performance method.