Note 12 - Income Taxes (Details) - Effective income tax rate reconciliation: (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Effective income tax rate reconciliation: [Abstract]
Taxes at federal statutory rate (in Dollars)	$ 5,406	$ 5,374	$ 14,806	$ 14,419
Taxes at federal statutory rate	35.00%	35.00%	35.00%	35.00%
State and local income tax, net of Federal income tax benefit (in Dollars)	930	938	2,458	2,380
State and local income tax, net of Federal income tax benefit	6.00%	6.10%	5.80%	5.80%
Other (in Dollars)	(312)	(324)	(766)	(734)
Other	(2.00%)	(2.10%)	(1.80%)	(1.80%)
Taxes at effective rate (in Dollars)	$ 6,024	$ 5,988	$ 16,498	$ 16,065
Taxes at effective rate	39.00%	39.00%	39.00%	39.00%