Note 4 - Concentrations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 4 - Concentrations (Details) [Line Items]
Allowance for Doubtful Accounts Receivable (in Dollars)	165	152
Allowance for distributors’ Price Adjustment (in Dollars)	2,206
Customer D [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member]
Note 4 - Concentrations (Details) [Line Items]
Concentration Risk, Percentage		11.00%	14.00%
Customer A, and Subcontractors [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member]
Note 4 - Concentrations (Details) [Line Items]
Concentration Risk, Percentage	18.00%	20.00%	23.00%
Customer B, and Subcontractors [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member]
Note 4 - Concentrations (Details) [Line Items]
Concentration Risk, Percentage		16.00%	15.00%