CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Common Stock [Member]	Other Comprehensive Income [Member]	Retained Earnings [Member]	Total
BALANCES at Dec. 31, 2009	$ 164,255	$ (22,152)	$ 7,475,212	$ 7,617,315
BALANCES (in shares) at Dec. 31, 2009	1,858,135
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock options exercised	50,120	0	0	50,120
Common Stock options exercised (in shares)	32,386
Purchase and retirement of Common Stock	(676,082)	0	0	(676,082)
Purchase and retirement of Common Stock (in shares)	(39,805)
Tax benefit of Common Stock options exercised	119,609	0	0	119,609
Dividends declared on Common Stock	0	0	(1,485,226)	(1,485,226)
Stock-based compensation expense	835,736	0	0	835,736
Other comprehensive income/(loss)	0	17,002	0	17,002
Net income	0	0	1,443,219	1,443,219
BALANCES at Dec. 31, 2010	493,638	(5,150)	7,433,205	7,921,693
BALANCES (in shares) at Dec. 31, 2010	1,850,716
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock options exercised	0	0	0	0
Common Stock options exercised (in shares)	15,229
Purchase and retirement of Common Stock	(479,344)	0	0	(479,344)
Purchase and retirement of Common Stock (in shares)	(28,426)
Tax benefit of Common Stock options exercised	18,816	0	0	18,816
Dividends declared on Common Stock	0	0	(1,590,628)	(1,590,628)
Stock-based compensation expense	335,076	0	0	335,076
Other comprehensive income/(loss)	0	5,150	0	5,150
Net income	0	0	1,615,327	1,615,327
BALANCES at Dec. 31, 2011	368,186	0	7,457,904	7,826,090
BALANCES (in shares) at Dec. 31, 2011	1,837,519			1,837,519
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock options exercised	0	0	0	0
Common Stock options exercised (in shares)	7,790
Purchase and retirement of Common Stock	(621,697)	0	0	(621,697)
Purchase and retirement of Common Stock (in shares)	(37,787)
LTIP restricted stock units issued (in shares)	34,880
Tax benefit of Common Stock options exercised	(18,189)	0	0	(18,189)
Dividends declared on Common Stock	0	0	(1,622,435)	(1,622,435)
Stock-based compensation expense	600,936	0	0	600,936
Other comprehensive income/(loss)	0	0	0	0
Net income	0	0	807,264	807,264
BALANCES at Dec. 31, 2012	$ 329,236	$ 0	$ 6,642,733	$ 6,971,969
BALANCES (in shares) at Dec. 31, 2012	1,842,402			1,842,402