CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS
Contract revenues	$ 232,890	$ 250,558	$ 648,148	$ 751,196
Contract costs	200,407	220,986	557,109	665,459
Gross profit	32,483	29,572	91,039	85,737
Selling, general and administrative expenses	19,576	15,639	51,727	46,072
Amortization of intangible assets	84	84	251	251
Gain on sale of property and equipment	(256)	(387)	(770)	(707)
Income from operations	13,079	14,236	39,831	40,121
Other income (expense)
Interest income			3	1
Interest expense	(175)	(368)	(537)	(754)
Other, net	2	(87)	(15)	(146)
Income before provision for income taxes	12,906	13,781	39,282	39,222
Income tax expense	4,591	5,035	14,545	14,731
Net income	$ 8,315	$ 8,746	$ 24,737	$ 24,491
Income per common share:
-Basic (in dollars per share)	$ 0.39	$ 0.42	$ 1.18	$ 1.19
-Diluted (in dollars per share)	$ 0.38	$ 0.41	$ 1.14	$ 1.15
Weighted average number of common shares and potential common shares outstanding:
-Basic (in shares)	20,860	20,410	20,769	20,349
-Diluted (in shares)	21,452	21,186	21,398	21,134