Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended		12 Months Ended		12 Months Ended			1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2012 Package Testing	Dec. 31, 2012 Permeation	Dec. 31, 2012 Industrial Analyzers and Other	Apr. 30, 2012 Dansensor
Goodwill and Other Intangible Assets
Goodwill	$ 8,729,438	$ 3,119,246	$ 8,729,438	$ 3,160,858	$ 5,940,437	$ 2,179,071	$ 609,930
Impairment of goodwill	0	0	0
Changes in the carrying amount of goodwill
Balance at the beginning of the period			3,119,246	3,160,858	366,655	2,142,661	609,930
Acquisition			5,639,837		5,639,837			5,600,000
Foreign currency translation			(29,645)		(66,055)	36,410
Balance at the end of the period	$ 8,729,438	$ 3,119,246	$ 8,729,438	$ 3,160,858	$ 5,940,437	$ 2,179,071	$ 609,930