Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Contract revenues	$ 90,251	$ 84,081	$ 171,509	$ 159,140
Costs of contract revenues	84,378	76,205	157,989	145,431
Gross profit	5,873	7,876	13,520	13,709
Selling, general and administrative expenses	8,129	7,826	16,093	15,517
(Loss) income from operations	(2,256)	50	(2,573)	(1,808)
Other income (expense)
Gain from sale of assets, net	84	45	176	48
Other income	467	316	467	614
Interest income	0	1	10	12
Interest expense	(194)	(132)	(324)	(316)
Other income, net	357	230	329	358
(Loss) income before income taxes	(1,899)	280	(2,244)	(1,450)
Income tax benefit	(736)	(22)	(871)	(661)
Net (loss) income	(1,163)	302	(1,373)	(789)
Net loss attributable to noncontrolling interest	0	(18)	0	(25)
Net (loss) income	$ (1,163)	$ 320	$ (1,373)	$ (764)
Basic loss per share (in dollars per share)	$ (0.04)	$ 0.01	$ (0.05)	$ (0.03)
Diluted loss per share (in dollars per share)	$ (0.04)	$ 0.01	$ (0.05)	$ (0.03)
Shares used to compute (loss) income per share
Basic (shares)	27,422,658	27,270,367	27,410,384	27,250,268
Diluted (shares)	27,422,658	27,600,661	27,410,384	27,250,268