Consolidated Statement of Stockholders' Equity (Deficit) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit	Treasury Stock [Member]	Total
Balances at Dec. 31, 2009	$ 6,327	$ 15,164,727	$ (8,384,990)	$ (693,957)	$ 6,092,107
Balances (in shares) at Dec. 31, 2009	6,327,318
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock option plans	119	673,257	0	0	673,376
Issuance of common stock under stock option plans (in shares)	118,425
Stock compensation expense	0	1,901,781	0	0	1,901,781
Repurchases of common stock	0	0	0	(458,001)	(458,001)
Repurchases of common stock (in shares)	0
Net profit (loss)	0	0	(1,508,540)	0	(1,508,540)
Balances at Dec. 31, 2010	6,446	17,739,765	(9,893,530)	(1,151,958)	6,700,723
Balances (in shares) at Dec. 31, 2010	6,445,743
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock option plans	85	82,365	0	0	82,450
Issuance of common stock under stock option plans (in shares)	85,000
Stock compensation expense	0	517,367	0	0	517,367
Repurchases of common stock	0	0	0	(739,551)	(739,551)
Repurchases of common stock (in shares)	0
Excess tax benefits from share-based payment arrangements	0	1,709,699	0	0	1,709,699
Net profit (loss)	0	0	6,601,626	0	6,601,626
Balances at Dec. 31, 2011	6,531	20,049,196	(3,291,904)	(1,891,509)	14,872,314
Balances (in shares) at Dec. 31, 2011	6,530,743
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock option plans	94	148,330	0	0	148,424
Issuance of common stock under stock option plans (in shares)	94,425
Stock compensation expense	0	228,485	0	0	228,485
Repurchases of common stock	0	0	0	(1,034,647)	(1,034,647)
Repurchases of common stock (in shares)	0
Excess tax benefits from share-based payment arrangements	0	262,695	0	0	262,695
Net profit (loss)	0	0	2,981,075	0	2,981,075
Balances at Dec. 31, 2012	$ 6,625	$ 20,688,706	$ (310,829)	$ (2,926,156)	$ 17,458,346
Balances (in shares) at Dec. 31, 2012	6,625,168