STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance, beginning at Dec. 31, 2013	$ 8,410	$ 50,381,348	$ 38,582,876	$ (21,115)	$ 88,951,519
Balance, beginning (in shares) at Dec. 31, 2013	8,410,493
Net income (loss)			(25,209,275)		(25,209,275)
Change in unrealized (gain) loss from interest rate swap				11,399	11,399
Common stock issued upon exercise of options	$ 86	447,665			447,751
Common stock issued upon exercise of options (in shares)	85,312
Common stock issued as employee compensation	$ 5	57,992			57,997
Common stock issued as employee compensation (in shares)	4,750
Tax benefit of stock option exercise		86,000			86,000
Stock-based compensation expense		467,765			467,765
Balance, ending at Dec. 31, 2014	$ 8,501	51,440,770	13,373,601	(9,716)	64,813,156
Balance, ending (in shares) at Dec. 31, 2014	8,500,555
Net income (loss)			5,015,993		5,015,993
Change in unrealized (gain) loss from interest rate swap				6,263	6,263
Common stock issued upon exercise of options	$ 26	79,974			80,000
Common stock issued upon exercise of options (in shares)	25,352
Common stock issued as employee compensation	$ 6	59,417			59,423
Common stock issued as employee compensation (in shares)	6,255
Stock-based compensation expense	$ 51	524,223			524,274
Stock-based compensation expense (in shares)	51,349
Tax benefit of stock option exercise		33,000			33,000
Balance, ending at Dec. 31, 2015	$ 8,584	52,137,384	18,389,594	(3,453)	$ 70,532,109
Balance, ending (in shares) at Dec. 31, 2015	8,583,511				8,583,511
Net income (loss)			(3,608,576)		$ (3,608,576)
Change in unrealized (gain) loss from interest rate swap				(5,547)	(5,547)
Common stock issued upon exercise of options	$ 3	(3)
Common stock issued upon exercise of options (in shares)	3,448
Common stock issued as employee compensation	$ 97	163,354			163,451
Common stock issued as employee compensation (in shares)	98,645
Stock-based compensation expense	$ 54	524,215			524,269
Stock-based compensation expense (in shares)	54,232
Balance, ending at Dec. 31, 2016	$ 8,738	$ 52,824,950	$ 14,781,018	$ (9,000)	$ 67,605,706
Balance, ending (in shares) at Dec. 31, 2016	8,739,836				8,739,836