Condensed Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 26,790,881	$ 21,487,677	$ 68,611,766	$ 19,619,571
Cost of sales	21,194,449	17,016,373	55,564,894	53,620,290
Gross profit (loss)	5,596,432	4,471,304	13,046,872	(34,000,719)
Selling, general and administrative expenses	1,898,965	1,800,878	5,968,123	5,424,581
Income (loss) from operations	3,697,467	2,670,426	7,078,749	(39,425,300)
Interest expense	218,382	67,879	703,436	370,234
Income (loss) before provision for (benefit from) income taxes	3,479,085	2,602,547	6,375,313	(39,795,534)
Provision for (benefit from) income taxes	1,033,000	905,000	2,011,000	(12,869,000)
Net income (loss)	2,446,085	1,697,547	4,364,313	(26,926,534)
Other comprehensive income, net of tax - Change in unrealized gain- interest rate swap	1,382	5,095	3,906	9,727
Comprehensive income (loss)	$ 2,447,467	$ 1,702,642	$ 4,368,219	$ (26,916,807)
Income (loss) per common share – basic (in dollars per share)	$ 0.29	$ 0.20	$ 0.51	$ (3.18)
Income (loss) per common share – diluted (in dollars per share)	$ 0.28	$ 0.20	$ 0.51	$ (3.18)
Shares used in computing income (loss) per common share:
Basic (in shares)	8,564,417	8,483,111	8,544,475	8,459,028
Diluted (in shares)	8,625,308	8,545,889	8,613,316	8,459,028