Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid In Capital	Foreign Currency Translation Adjustment	Retained Earnings	Treasury Stock	Non Controlling Interest
Beginning Balance at Dec. 31, 2012	$ 16,430,094	$ 87,499	$ 8,617,081	$ (261,807)	$ 8,021,136	$ (288,013)	$ 254,198
Beginning Balance, shares at Dec. 31, 2012		8,749,888
Net income (loss)	1,435,268				1,460,992		(25,724)
Options exercised	79,667		(44,953)			124,620
Options exercised, shares
Stock based compensation - grants	319,440		221,076			98,364
Stock based compensation - grants, shares
Stock based compensation - options	12,256		12,256
Foreign currency translation adjustment	(4,649)			(4,649)
Balance at Dec. 31, 2013	18,272,076	87,499	8,805,460	(266,456)	9,482,128	(65,029)	228,474
Balance, shares at Dec. 31, 2013		8,749,888
Net income (loss)	2,030,928				2,048,077		(17,149)
Dividends declared	(440,016)				(440,016)
Options exercised	63,250	1,150	49,600			12,500
Options exercised, shares	145,000	115,000
Stock based compensation - grants	329,914	493	276,892			52,529
Stock based compensation - grants, shares		49,386
Acquisition of joint venture partner's interest in OdorStar	(211,325)						(211,325)
Foreign currency translation adjustment	(12,707)			(12,707)
Balance at Dec. 31, 2014	$ 20,032,120	$ 89,142	$ 9,131,952	$ (279,163)	$ 11,090,189
Balance, shares at Dec. 31, 2014		8,914,274