Note 10 - Significant Business Concentrations And Risk (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Number of Major Customers	5
Concentration Risk, Supplier	one
Customer Concentration Risk [Member]
Concentration Risk, Percentage	30.00%	34.00%	32.00%
Consolidated Revenues [Member]
Concentration Risk, Percentage	2.00%	2.00%	2.00%
Sales Revenue, Goods, Net [Member]
Concentration Risk, Percentage		5.50%	5.50%
Entity-Wide Revenue, Major Customer, Percentage	2.90%