Note 11 - Restrictions on Dividends (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Proceeds from Dividends Received	$ 7,930	$ 7,853	$ 7,782
Period of Restriction on Retained Net Income Without Prior Approval	2 years
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	$ 28,213