STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-in Capital	Retained Earnings	Total
BALANCE at Dec. 31, 2015	$ 201,825	$ 2,703,050	$ 10,590,340	$ 13,495,215
BALANCE (in shares) at Dec. 31, 2015	2,018,253
Increase (Decrease) in Stockholders' Equity
Net loss			(65,061)	(65,061)
Exercise of stock options and related tax benefit	$ 50	3,949		3,999
Exercise of stock options and related tax benefit (in shares)	500
Stock based compensation and related tax benefit		25,007		25,007
BALANCE at Dec. 31, 2016	$ 201,875	2,732,006	10,525,279	$ 13,459,160
BALANCE (in shares) at Dec. 31, 2016	2,018,753			2,018,753
Increase (Decrease) in Stockholders' Equity
Net loss			(226,147)	$ (226,147)
Exercise of stock options and related tax benefit	$ 25	1,798		1,823
Exercise of stock options and related tax benefit (in shares)	250
Common stock repurchased	$ (3,545)	(47,975)	(248,946)	(300,466)
Common stock repurchased (in shares)	(35,450)
Stock based compensation and related tax benefit		23,561		23,561
BALANCE at Dec. 31, 2017	$ 198,355	$ 2,709,390	$ 10,050,186	$ 12,957,931
BALANCE (in shares) at Dec. 31, 2017	1,983,553			1,983,553