Note I - Income Taxes (Detail) - Provision for Income Tax Expense (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Federal	$ 1,681	$ 2,278	$ (699)
State	83	144	74
Foreign	826	642	565
Federal	0	12	6,156
State	0	0	1,967
Foreign	607	675	(131)
Total income tax expense	$ 3,197	$ 3,751	$ 7,932