Note 3 - Income Taxes (Detail) - Major Components of Income Tax Provision (Benefit) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal	$ 2,231	$ 3,672
State	906	551
Foreign	115	115
Total current income tax provision	3,252	4,338
Deferred:
Federal and state deferred income tax provision	4,163	2,977
Total income tax provision	$ 7,415	$ 7,315