Accounts Receivable, Net (Tables)

3 Months Ended

Mar. 31, 2017

Accounts receivable, net consists of the following:



	March 31, 2017			December 31, 2016
In thousands
Trade receivables	$	154,003		$	143,471
U.S. Government contracts:
Billed	17,007			17,244
Costs and accrued profit – not billed	3,326			1,478
Commercial and other government contracts:
Billed	50,812			50,560
Costs and accrued profit – not billed	35,009			22,234
Less allowance for doubtful accounts	(3,997		)	(4,123		)
Accounts receivable, net	$	256,160		$	230,864

Accounts Receivable due to contract changes, negotiated settlements and claims for unanticipated cost

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



	March 31, 2017		December 31, 2016
In thousands
Contract changes, negotiated settlements and claims for unanticipated contract costs	$	900	$	900