Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Contract revenues	$ 67,132	$ 70,899	$ 118,022	$ 149,956
Costs of contract revenues	67,349	68,946	121,067	137,685
Gross profit (loss)	(217)	1,953	(3,045)	12,271
Selling, general and administrative expenses	7,478	7,114	14,569	15,012
Operating loss	(7,695)	(5,161)	(17,614)	(2,741)
Other income (expense)
Other income	4	(104)	184	0
Interest income	8	8	19	17
Interest expense	(234)	(83)	(403)	(169)
Other income (expense), net	(222)	(179)	(200)	(152)
Loss before income taxes	(7,917)	(5,340)	(17,814)	(2,893)
Income tax benefit	(2,497)	(2,124)	(6,057)	(1,215)
Net loss	$ (5,420)	$ (3,216)	$ (11,757)	$ (1,678)
Basic loss per share	$ (0.20)	$ (0.12)	$ (0.43)	$ (0.06)
Diluted loss per share	$ (0.20)	$ (0.12)	$ (0.43)	$ (0.06)
Shares used to compute loss per share
Basic	27,121,417	26,930,353	27,120,593	26,967,643
Diluted	27,121,417	26,930,353	27,120,593	26,967,643