Note 6 - Segment Information (Detail) - Long Lived Assets By Geographic Region (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Long Lived Assets	$ 63,976	$ 60,436
China [Member]
Long Lived Assets	38,694	37,071
United States [Member]
Long Lived Assets	25,085	23,163
Taiwan [Member]
Long Lived Assets	83	90
Japan [Member]
Long Lived Assets	49	57
Other Region [Member]
Long Lived Assets	$ 65	$ 55