Note 4 - Goodwill and Intangible Assets (Details) - Changes in the Carrying Amount of Goodwill (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014 Package Testing Segment [Member]	Jun. 30, 2014 Permeation Segment [Member]	Jun. 30, 2014 Industrial Analyzers and Other Segment [Member]	Dec. 31, 2013 Industrial Analyzers and Other Segment [Member]
Goodwill [Line Items]
Balance	$ 9,034,479	$ 6,196,570	$ 2,227,979	$ 609,930	$ 609,930
Foreign currency translation	(63,746)	(47,183)	(16,563)
Balance	$ 8,970,733	$ 6,149,387	$ 2,211,416	$ 609,930	$ 609,930