Note 20 - Parent Company Only Financial Statements (Details) - Condensed Statements of Cash Flows (Parentheticals) - shares		12 Months Ended
	May. 13, 2015	Dec. 31, 2015	Dec. 31, 2014
Common Stock Offering 1 [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from issuance of common stock, net of issuance costs, shares	3,680,000	3,680,000
Parent Company [Member] | Common Stock Offering 1 [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from issuance of common stock, net of issuance costs, shares		3,680,000
Parent Company [Member] | Series F Noncumulative Perpetual Preferred Stock [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Redemption of Series F Noncumulative Perpetual Preferred Stock, shares			29,867