Note 8 - Income Taxes (Detail) - The provision for income taxes (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Federal	$ 3,247	$ 2,244	$ 1,992
U.S. State	177	269	250
Foreign	3,917	4,231	5,051
Provision for income taxes	7,341	6,744	7,293
Current	4,094	4,500	5,301
Deferred	$ 3,247	$ 2,244	$ 1,992