Consolidated Statements of Operations (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Contract revenues	$ 75,059,000	$ 50,890,000
Costs of contract revenues	69,229,000	53,718,000
Gross profit (loss)	5,830,000	(2,828,000)
Selling, general and administrative expenses	7,691,000	7,091,000
Loss from operations	(1,861,000)	(9,919,000)
Other income (expense)
(Loss) gain from sale of assets, net	2,000	14,000
Other income	298,000	181,000
Interest income	10,000	11,000
Interest expense	(184,000)	(168,000)
Other (income) expense, net	124,000	24,000
Loss before income taxes	(1,737,000)	(9,895,000)
Income tax benefit	(640,000)	(3,559,000)
Net loss	(1,090,000)	(6,336,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(1,097,000)	(6,336,000)
Net loss attributable to noncontrolling interest	$ (7,000)	$ 0.00
Basic loss per share (in dollars per share)	$ (0.04)	$ (0.23)
Diluted loss per share (in dollars per share)	$ (0.04)	$ (0.23)
Shares used to compute loss per share
Basic (shares)	27,229,792	27,119,760.00
Diluted (shares)	27,229,792	27,119,760.00