Note 23 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent										34.00%	34.00%	34.00%
Income Tax Expense (Benefit)	$ 3,803	$ 1,427	$ 935	$ 763	$ 572	$ 744	$ 430	$ 212		$ 6,928	$ 1,958	$ 3,462
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	3,810	$ 4,303	$ 3,144	$ 3,015	2,869	$ 3,110	$ 1,986	$ (748)		$ 14,272	$ 7,217	$ 12,048
Effective Income Tax Rate Reconciliation, Percent										48.54%	27.13%	28.74%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability										$ 2,490	$ 363
Income Tax Expense (Benefit), Before Deferred Tax Write Down										$ 4,400
Effective Income Tax Rate, Continuing Operations, Before Deferred Tax Asset Write Down										30.80%
Deferred Tax Assets, Net of Valuation Allowance	7,179				11,174					$ 7,179	11,174
Qualified Zone Academy Bonds	4,740				4,740					4,740	4,740
Unrecognized Tax Benefits	0				0					0	0
State and Local Jurisdiction [Member]
Income Tax Examination, Interest Expense										41
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	988									$ 988
Percentage of Deferred Tax Liability Recognized Related to Amended Tax Returns										100.00%
Capital Loss Carryforward [Member]
Tax Credit Carryforward, Amount	53				53					$ 53	53
Other Assets [Member]
Qualified Zone Academy Bonds	4,700				$ 4,700					4,700	$ 4,700
Securities Available-for-sale [Member]
Qualified Zone Academy Bonds	$ 1,000									$ 1,000
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									21.00%