Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items]
	$ 24,776	$ 22,531	$ 48,886	$ 43,174
United States [Member]
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items]
	10,816	7,537	20,682	14,409
Asia [Member]
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items]
	7,690	7,340	16,407	12,557
Europe [Member]
Note 8 - Customer and Geographic Information (Details) - Revenue by Geographical Areas [Line Items]
	$ 6,270	$ 7,654	$ 11,797	$ 16,208