Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
BALANCE (in shares) at Dec. 31, 2014	10,245,534
BALANCE at Dec. 31, 2014	$ 26,984	$ 6,013,325	$ (2,894,068)	$ 46,664,829	$ (688,058)	$ 49,123,012
Shares issued – stock option exercise (in shares)	2,000					2,000
Shares issued – stock option exercise	$ 5	9,915				$ 9,920
Stock-based compensation (in shares)	34,484
Stock-based compensation	$ 73	67,744				67,817
Net income				2,952,303		2,952,303
Translation adjustment					(166,567)	(166,567)
BALANCE (in shares) at Jun. 30, 2015	10,282,018
BALANCE at Jun. 30, 2015	$ 27,062	6,090,984	(2,894,068)	49,617,132	(854,625)	51,986,485
BALANCE (in shares) at Dec. 31, 2015	9,753,293
BALANCE at Dec. 31, 2015	$ 27,062	6,168,489	(6,602,930)	53,067,234	(1,687,679)	50,972,176
Stock-based compensation (in shares)	33,685
Stock-based compensation	$ 80	113,222				113,302
Net income				3,341,912		3,341,912
Translation adjustment					254,753	254,753
BALANCE (in shares) at Jun. 30, 2016	9,266,496
BALANCE at Jun. 30, 2016	$ 27,142	$ 6,281,711	(10,278,584)	$ 56,409,146	$ (1,432,926)	51,006,489
Purchase of treasury stock (in shares)	(520,482)
Purchase of treasury stock			$ (3,675,654)			$ (3,675,654)