CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Contract revenues	$ 185,310	$ 140,285	$ 335,604	$ 289,174
Contract costs	165,771	123,572	294,476	257,292
Gross profit	19,539	16,713	41,128	31,882
Selling, general and administrative expenses	13,698	11,048	27,651	21,612
Amortization of intangible assets	83	83	167	167
Gain on sale of property and equipment	(229)	(256)	(300)	(446)
Income from operations	5,987	5,838	13,610	10,549
Other income (expense)
Interest income	14	12	43	23
Interest expense	(160)	(208)	(370)	(411)
Other, net	(10)	(53)	(32)	(83)
Income before provision for income taxes	5,831	5,589	13,251	10,078
Income tax expense	2,114	2,236	5,034	3,945
Net income	$ 3,717	$ 3,353	$ 8,217	$ 6,133
Income per common share:
Basic (in dollars per share)	$ 0.19	$ 0.17	$ 0.41	$ 0.31
Diluted (in dollars per share)	$ 0.18	$ 0.16	$ 0.39	$ 0.30
Weighted average number of common shares and potential common shares outstanding:
Basic (in shares)	20,059	19,868	20,021	19,844
Diluted (in shares)	20,978	20,791	20,956	20,761