Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Contract revenues	$ 354,544	$ 292,042	$ 259,852
Costs of contract revenues	322,540	277,672	249,614
Gross profit	32,004	14,370	10,238
Selling, general and administrative expenses	32,110	28,573	29,519
Operating loss	(106)	(14,203)	(19,281)
Other income (expense):
Loss from sale of assets, net	(153)	(1,822)	(60)
Other income	165	227	198
Interest income	13	35	31
Interest expense	(525)	(743)	(349)
Other expense, net	(500)	(2,303)	(180)
Loss before income taxes	(606)	(16,506)	(19,461)
Income tax benefit	(937)	(4,640)	(6,347)
Net income (loss)	331	(11,866)	(13,114)
Net income/(loss) attributable to noncontrolling interest	$ 0	$ 0	$ 0
Basic loss per share (in dollars per share)	$ 0.01	$ (0.44)	$ (0.49)
Diluted loss per share (in dollars per share)	$ 0.01	$ (0.44)	$ (0.49)
Shares used to compute income (loss)per share
Basic (shares)	27,296,732	27,138,927	26,990,059
Diluted (shares)	27,613,054	27,138,927	26,990,059