Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary of Significant Accounting Policies

Schedule of cash paid

        Cash paid (in thousands) for:

	Year Ended December 31,
	2015		2014		2013
Interest	$	1,408	$	1,764	$	799
Income taxes		35,538		15,366		15,821
Total	$	36,946	$	17,130	$	16,620

Schedule of contracts in progress

        Contracts in progress are as follows (in thousands):

	December 31,
	2015			2014
Costs incurred on contracts in progress	$	1,135,279		$	1,193,857
Estimated earnings, net of losses		188,243			151,950
Less—Billings to date		(1,377,581	)		(1,395,633	)
	$	(54,059	)	$	(49,826	)
Costs and estimated earnings in excess of billings	$	31,338		$	27,620
Billings in excess of costs and estimated earnings		(85,397	)		(77,446	)
	$	(54,059	)	$	(49,826	)