CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Cash Flows [Abstract]
Revenues	$ 46,830,647	$ 36,195,570	$ 115,196,850	$ 102,316,702
Cost of revenues	41,945,879	33,011,934	104,287,660	95,497,261
Gross profit	4,884,768	3,183,636	10,909,190	6,819,441
Reduction of contingent liability			(1,850,000)
Selling, general and administrative expenses (exclusive of acquisition related expenses)	2,495,748	1,610,146	7,129,673	3,724,120
Acquisition related expenses		1,154,612		1,154,612
Total selling, general and administrative expenses	2,495,748	2,764,758	7,129,673	4,878,732
Income (loss) from operations	2,389,020	418,878	5,629,517	1,940,709
Other income (expense)
Other income		949		1,582
Other expense	(3,949)		(31,690)
Interest expense	(95,488)	(28,972)	(314,627)	(29,016)
Total other (expense)	(99,437)	(28,023)	(346,317)	(27,434)
Income before income taxes	2,289,583	390,855	5,283,200	1,913,275
Income tax benefit	40,211	1,714,813	21,460	1,607,641
Net income	$ 2,329,794	$ 2,105,668	$ 5,304,660	$ 3,520,916
Earnings per common share
Basic	$ 0.13	$ 0.17	$ 0.30	$ 0.35
Diluted	$ 0.12	$ 0.13	$ 0.27	$ 0.25
Shares used in computing earnings per share
Basic	17,715,786	12,255,372	17,402,501	10,085,206
Diluted	19,997,257	16,484,023	19,766,263	14,358,691