Note 20 - Subordinated Debentures (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Jun. 01, 2014	Dec. 31, 2014	Jun. 01, 2014
Debt Disclosure [Abstract]
Number of Business Trusts		5
Business Combination, Debt Assumed, Number of Trusts		4
Fair Value Discount of Subordinated Debentures Related to Assumed Business Trusts at Time of Merger			$ 15.0
Amortization of Fair Value Discount Related to Subordinated Debentures of Assumed Business Trusts	$ 0.7
Amortization Period of Fair Value Discount Related to Subordinated Debentures of Assumed Business Trusts	21 years 6 months