Goodwill and Intangible Assets (Details) (USD $)	9 Months Ended
Sep. 30, 2013	Sep. 30, 2013 Package Testing	Sep. 30, 2013 Permeation	Sep. 30, 2013 Industrial Analyzers and Other	Dec. 31, 2012 Industrial Analyzers and Other
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 8,729,438	$ 5,940,437	$ 2,179,071	$ 609,930	$ 609,930
Foreign currency translation	172,306	128,963	43,343
Balance at the end of the period	$ 8,901,744	$ 6,069,400	$ 2,222,414	$ 609,930	$ 609,930

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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