Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2015

Accounts Receivable, Net [Abstract]

Schedule of Accounts Receivable, Net

Accounts receivable consist of the following:

	At December 31,
	2015			2014
In thousands
Trade receivables	$	144,616		$	141,481
U.S.  Government contracts:
Billed	20,289			21,909
Costs and accrued profit – not billed	4,248			1,581
Commercial and other government contracts:
Billed	68,066			51,166
Costs and accrued profit – not billed	3,872			21,719
Less allowance for doubtful accounts	(2,989		)	(3,208		)
Total	$	238,102		$	234,648

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,
	2015		2014
In thousands
Contract changes, negotiated settlements and claims for unanticipated contract costs	$	900	$	4,561
Total	$	900	$	4,561