Note 12 - Income Taxes (Details) - Effective Income Tax Rate Reconciliation (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Effective Income Tax Rate Reconciliation [Abstract]
Taxes at federal statutory rate	$ 6,392	$ 5,406	$ 19,169	$ 14,806
Taxes at federal statutory rate	35.00%	35.00%	35.00%	35.00%
State and local income tax, net of Federal income tax benefit	1,183	930	3,948	2,458
State and local income tax, net of Federal income tax benefit	6.50%	6.00%	7.20%	5.80%
Other	(515)	(312)	(1,532)	(766)
Other	(2.80%)	(2.00%)	(2.80%)	(1.80%)
Taxes at effective rate	$ 7,060	$ 6,024	$ 21,585	$ 16,498
Taxes at effective rate	38.70%	39.00%	39.40%	39.00%