Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	$ 68,574	$ 60,436
China [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	43,628	37,071
United States [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	24,738	23,163
Taiwan [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	80	90
Japan [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	40	57
Other Region [Member]
Note 6 - Segment Information (Details) - Long Lived Assets By Geographic Region [Line Items]
Long Lived Assets	$ 88	$ 55