STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2011	$ 9,020,433	$ 326,115	$ 9,911,914	$ (614,315)	$ (562,469)	$ (40,812)
BALANCE (in shares) at Dec. 31, 2011		3,261,148			257,114
Net income	169,949	0	0	169,949	0	0
Other comprehensive income (loss), net of taxes	(8,220)	0	0	0	0	(8,220)
Exercise of stock options	50,800	0	17,986	0	32,814	0
Exercises of stock options (in shares)		0			(15,000)
Tax benefits related to stock options	6,842	0	6,842	0	0	0
Stock-based compensation	18,017	0	18,017	0	0	0
BALANCE at Jun. 30, 2012	9,257,821	326,115	9,954,759	(444,366)	(529,655)	(49,032)
BALANCE (in shares) at Jun. 30, 2012		3,261,148			242,114
BALANCE at Dec. 31, 2012	9,194,683	326,115	9,973,146	(524,803)	(529,655)	(50,120)
BALANCE (in shares) at Dec. 31, 2012		3,261,148			242,114
Net income	210,761	0	0	210,761	0	0
Other comprehensive income (loss), net of taxes	24,225	0	0	0	0	24,225
Stock-based compensation	16,321	0	16,321	0	0	0
BALANCE at Jun. 30, 2013	$ 9,445,990	$ 326,115	$ 9,989,467	$ (314,042)	$ (529,655)	$ (25,895)
BALANCE (in shares) at Jun. 30, 2013		3,261,148			242,114