Note 11 - Legal Proceedings (Details)	0 Months Ended	1 Months Ended
	Apr. 12, 2012	Jan. 26, 2010
Disclosure Text Block Supplement [Abstract]
Gain Contingency, Description		On January 26, 2010, the Company commenced an action against Taiwan Glass Industrial Corp. ("Taiwan Glass") in the United States District Court for the Southern District of New York. By that action, the Company seeks monetary damages ($5,816,000) against Taiwan Glass for breach of contract.
Loss Contingency, Damages Sought	On April 12, 2012, Taiwan Glass filed a motion seeking Partial Summary Judgment in the amount of $3,564,000 (representing the portion of the purchase price that it had previously paid to the Company). By Memorandum and Order dated November 7, 2012, the Court denied the Taiwan Glass motion in its entirety. The Company is vigorously pursuing its claims against Taiwan Glass and defending against the counterclaims.