Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	$ 68,275	$ 60,436
China [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	43,553	37,071
United States [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	24,531	23,163
Taiwan [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	83	90
Japan [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	43	57
Other Region [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	$ 65	$ 55