Consolidated Statement of Stockholders' Equity (Deficit) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earning (Accumulated Deficit) [Member]	Treasury Stock [Member]	Total
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	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	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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock option plans	30	29,970	0	0	30,000
Issuance of common stock under stock option plans (in shares)	30,000
Effect of expiration of stock options	0	(75,928)	0	0	(75,928)
Effect of expiration of stock options (in shares)	0
Stock compensation expense	0	111,636	0	0	111,636
Repurchases of common stock	0	0	0	(674,874)	(674,874)
Repurchases of common stock (in shares)	0
Excess tax benefits from share-based payment arrangements	0	197,412	0	0	197,412
Net profit	0	0	5,285,847	0	5,285,847
Balances at Dec. 31, 2013	$ 6,655	$ 20,951,796	$ 4,975,018	$ (3,601,030)	$ 22,332,439
Balances (in shares) at Dec. 31, 2013	6,655,168