Note 12 - Subsequent Events (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Taiwan Glass Litigation [Member]
Loss Contingency, Damages Awarded, Value		$ 1,100,000
Gain (Loss) Related to Litigation Settlement		629,000
Gain (Loss) Related to Litigation Settlement	$ 628,905	$ 628,905