Note J - Income Taxes (Details) - Income Tax Expense Components (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 15,154	$ 7,730	$ 20,632
State	3,247	1,328	4,274
Foreign	1,651	1,184	801
	20,052	10,242	25,707
Deferred:
Federal	2,523	10,977	(3,173)
State	323	2,550	(630)
Foreign	(2)	67	(9)
	2,844	13,594	(3,812)
Income Tax Expense	$ 22,896	$ 23,836	$ 21,895