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Note 10 - Income Taxes (Details) - Federal and State Income Tax Expense (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal and State Income Tax Expense [Abstract]
Current federal income tax	$ 26,136	$ 20,937	$ 12,760
Current state income tax	6,147	4,543	3,051
Total current	32,283	25,480	15,811
Deferred federal income tax benefit	(3,909)	(4,564)	(2,062)
Deferred state income tax benefit	(56)	(33)	(18)
Total deferred	(3,965)	(4,597)	(2,080)
Total income tax expense	$ 28,318	$ 20,883	$ 13,731

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.