CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS
Contract revenues	$ 228,877	$ 213,916	$ 444,515	$ 415,258
Contract costs	198,349	182,663	386,907	356,702
Gross profit	30,528	31,253	57,608	58,556
Selling, general and administrative expenses	18,110	16,144	34,985	32,151
Amortization of intangible assets	83	83	167	167
Gain on sale of property and equipment	(60)	(336)	(71)	(514)
Income from operations	12,395	15,362	22,527	26,752
Other income (expense)
Interest income	30		33	3
Interest expense	(177)	(179)	(355)	(362)
Other, net	108	(22)	162	(17)
Income before provision for income taxes	12,356	15,161	22,367	26,376
Income tax expense	4,615	5,699	8,354	9,954
Net income	$ 7,741	$ 9,462	$ 14,013	$ 16,422
Income per common share:
-Basic (in dollars per share)	$ 0.36	$ 0.45	$ 0.66	$ 0.79
-Diluted (in dollars per share)	$ 0.36	$ 0.44	$ 0.64	$ 0.76
Weighted average number of common shares and potential common shares outstanding:
-Basic (in shares)	21,115	20,785	21,108	20,723
-Diluted (in shares)	21,631	21,397	21,600	21,383