Goodwill and Intangible Assets (Details 2) (USD $)	3 Months Ended					3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Patents	Dec. 31, 2012 Patents	Mar. 31, 2013 Patents Minimum	Dec. 31, 2012 Patents Minimum	Mar. 31, 2013 Patents Maximum	Dec. 31, 2012 Patents Maximum	Mar. 31, 2013 Trademarks and trade names	Dec. 31, 2012 Trademarks and trade names	Mar. 31, 2013 Trademarks and trade names Minimum	Dec. 31, 2012 Trademarks and trade names Minimum	Mar. 31, 2013 Trademarks and trade names Maximum	Dec. 31, 2012 Trademarks and trade names Maximum	Mar. 31, 2013 Developed technology	Dec. 31, 2012 Developed technology	Mar. 31, 2013 Customer relationships	Dec. 31, 2012 Customer relationships	Mar. 31, 2013 Other intangibles	Dec. 31, 2012 Other intangibles
Other Intangible Assets
Cost	$ 14,064,242		$ 14,198,423	$ 1,536,006	$ 1,485,164					$ 4,183,678	$ 4,295,181					$ 7,198,420	$ 7,424,680	$ 841,820	$ 868,280	$ 304,318	$ 125,118
Accumulated Amortization	(2,080,190)		(1,816,809)	(439,474)	(428,409)					(656,076)	(608,861)					(799,825)	(618,723)	(93,535)	(72,357)	(91,280)	(88,459)
Net	11,984,052		12,381,614	1,096,532	1,056,755					3,527,602	3,686,320					6,398,595	6,805,957	748,285	795,923	213,038	36,659
Estimated Useful Lives						10 years	10 years	17 years	17 years			5 years	5 years	20 years	20 years	9 years	9 years	9 years	9 years	7 years	3 years 9 months
Total amortization expense	288,754	15,842
Estimated amortization expense related to the intangible assets
2013	864,402
2014	1,142,733
2015	1,138,081
2016	1,121,482
2017	1,109,991
2018 and thereafter	$ 5,773,408