Note 17 - Segment and Geographic Information - Revenue by Market Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 103,618	$ 106,456	$ 94,079	$ 84,512	$ 86,918	$ 91,194	$ 81,416	$ 73,538	$ 388,665	$ 333,067	$ 282,535
Consumer Market Segment [Member]
Revenue									153,732	145,090	122,733
Industrial Market Segment [Member]
Revenue									89,639	66,343	49,037
Computing and Storage Market Segment [Member]
Revenue									80,562	56,568	46,147
Communications Market Segment [Member]
Revenue									$ 64,732	$ 65,066	$ 64,618