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Note 10 - Income Taxes (Details) - Income Tax Provisions: (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal:
Current									$ 17,808	$ 17,330	$ 17,314
Deferred									(464)	(590)	435
Total federal tax provision									17,344	16,740	17,749
State and Local:
Current									5,828	5,321	5,470
Deferred									(216)	(214)	250
Total state and local tax provision									5,612	5,107	5,720
Total income tax provision	$ 6,458	$ 6,024	$ 6,155	$ 4,319	$ 5,782	$ 5,988	$ 5,519	$ 4,558	$ 22,956	$ 21,847	$ 23,469

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

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

Amount of deferred federal 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.