Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues	$ 195,127	$ 178,251	$ 368,543	$ 358,543
Cost of Revenues	172,426	153,920	324,339	308,507
Gross Profit	22,701	24,331	44,204	50,036
Selling, General and Administrative Expenses	14,802	15,585	31,421	32,376
Amortization Expense	331	319	658	652
Operating Income	7,568	8,427	12,125	17,008
Interest and Other Expense	6,740	4,926	11,304	9,784
Income Before Provision for Income Taxes	828	3,501	821	7,224
Provision for Income Taxes	697	781	61	1,941
Net Income	$ 131	$ 2,720	$ 760	$ 5,283
Earnings per Common Share:
Basic and Diluted (in dollars per share)	$ 0.00	$ 0.09	$ 0.03	$ 0.18
Weighted Average Shares Outstanding:
Basic (in shares)	29,874	29,449	29,873	29,449
Diluted (in shares)	30,455	29,756	30,325	29,632