Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2016

Accounts receivable consist of the following:



	At December 31,
	2016			2015
In thousands
Trade receivables	$	143,471		$	144,616
U.S. Government contracts:
Billed	17,244			20,289
Costs and accrued profit – not billed	1,478			4,248
Commercial and other government contracts:
Billed	50,560			68,066
Costs and accrued profit – not billed	22,234			3,872
Less allowance for doubtful accounts	(4,123		)	(2,989		)
Total	$	230,864		$	238,102

Accounts Receivable due to contract changes, negotiated settlements and claims for unanticipated cost [Table Text Block]

Accounts receivable, net includes amounts for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts are as follows:



	At December 31,
	2016		2015
In thousands
Contract changes, negotiated settlements and claims for unanticipated contract costs	$	900	$	900
Total	$	900	$	900