Note 4 - Goodwill and Intangible Assets (Details) - Changes in the Carrying Amount of Goodwill (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Package Testing Segment [Member]	Sep. 30, 2014 Permeation Segment [Member]	Sep. 30, 2014 Industrial Analyzers and Other Segment [Member]	Dec. 31, 2013 Industrial Analyzers and Other Segment [Member]
Goodwill [Line Items]
Balance	$ 9,034,479	$ 6,196,572	$ 2,227,977	$ 609,930	$ 609,930
Foreign currency translation	(591,479)	(443,512)	(147,967)
Balance	$ 8,443,000	$ 5,753,060	$ 2,080,010	$ 609,930	$ 609,930