Note 13 - Segment Information (Detail) - Revenue By Region (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue By Region	$ 213,813	$ 196,519	$ 218,840
China [Member]
Revenue By Region	124,278	113,469	105,233
Taiwan [Member]
Revenue By Region	27,477	23,634	25,840
South East Asia [Member]
Revenue By Region	21,641	14,789	10,219
Europe [Member]
Revenue By Region	16,201	14,416	20,416
Korea [Member]
Revenue By Region	9,434	14,183	33,761
Japan [Member]
Revenue By Region	8,516	10,681	14,255
United States [Member]
Revenue By Region	5,711	4,422	8,415
Other Region [Member]
Revenue By Region	$ 555	$ 925	$ 701