Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Significant Accounting Policies

Schedule of cash paid

Cash paid (in thousands) for:

	Year Ended December 31,
	2016		2015		2014
Interest	$	1,864	$	1,408	$	1,764
Income taxes	$	29,349	$	35,538	$	15,366

Schedule of contracts in progress

Contracts in progress are as follows (in thousands):

	December 31,
	2016		2015
Costs incurred on contracts in progress	$	1,116,182	$	1,135,279
Estimated earnings, net of losses		207,252		188,243
Less—Billings to date		(1,378,050)		(1,377,581)
	$	(54,616)	$	(54,059)
Costs and estimated earnings in excess of billings	$	29,369	$	31,338
Billings in excess of costs and estimated earnings		(83,985)		(85,397)
	$	(54,616)	$	(54,059)