Note 3 - Taxation (Detail) - Components of Income Tax Expense (Benefit) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Federal	$ 1,529	$ 1,456	$ 2,520
State	425	402	414
Foreign	471	482	103
Total current	2,425	2,340	3,037
Federal	9	674	(1,051)
State	1	95	(97)
Foreign	(133)		44
Total deferred	(458)	793	(588)
Income tax expense	$ 2,302	$ 3,109	$ 1,933