Note 16 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Current tax expense
Federal	$ 4,222	$ 3,884	$ 6,595	$ 6,960
State	186	186	310	273
Total current tax expense	4,408	4,070	6,905	7,233
Deferred tax expense
Federal	(711)	109	390	1,093
State	(21)	(28)	57	78
Total deferred tax expense (benefit)	(732)	81	447	1,171
Total income tax expense	$ 3,676	$ 4,151	$ 7,352	$ 8,404