Note 12 - Income Taxes (Details) - Effective Income Tax Rate Reconciliation (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Effective Income Tax Rate Reconciliation [Abstract]
Taxes at federal statutory rate	$ 6,749	$ 5,524	$ 12,777	$ 9,400
Taxes at federal statutory rate	35.00%	35.00%	35.00%	35.00%
State and local income tax, net of Federal income tax benefit	1,355	970	2,765	1,528
State and local income tax, net of Federal income tax benefit	7.00%	6.10%	7.60%	5.70%
Other	(506)	(339)	(1,017)	(454)
Other	(2.60%)	(2.10%)	(2.80%)	(1.70%)
Taxes at effective rate	$ 7,598	$ 6,155	$ 14,525	$ 10,474
Taxes at effective rate	39.40%	39.00%	39.80%	39.00%