Note 12 - Preferred Stock (Details) (USD $)	1 Months Ended	6 Months Ended	0 Months Ended			9 Months Ended
	Dec. 23, 2013	Jun. 30, 2010	Jun. 30, 2014	Mar. 31, 2014	Jun. 29, 2012	Sep. 15, 2011	Dec. 31, 2014	Dec. 31, 2013	Dec. 20, 2013
Note 12 - Preferred Stock (Details) [Line Items]
Preferred Stock, Shares Outstanding (in Shares)							0	0
Share Price (in Dollars per share)									$ 17.24
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)							$ 1	$ 1
Share Conversion, Fractional Amount	$ 1,915
Stock Issued During Period, Shares, Conversion of Convertible Securities (in Shares)	2,057,502
Preferred Stock, Shares Issued (in Shares)							0	0
Series E Non-Cumulative Perpetual Preferred Stock [Member]
Note 12 - Preferred Stock (Details) [Line Items]
Preferred Stock, Dividend Rate, Percentage		7.00%
Convertible Preferred Stock, Threshold Trading Days		20 days
Convertible Preferred Stock, Threshold Consecutive Trading Days		30 days
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)	$ 1,000
Series F Preferred Stock [Member]
Note 12 - Preferred Stock (Details) [Line Items]
Preferred Stock, Shares Issued (in Shares)						40,090
Proceeds from Sale of Treasury Stock						40,090,000
Stock Redeemed or Called During Period, Shares (in Shares)			14,867	15,000	10,223
Stock Redeemed or Called During Period, Value			14,823,922	15,000,000	10,223,000
Dividends, Preferred Stock			$ 373,869	$ 337,500	$ 124,948
Conversion Price for Series E Preferred Stock Into Common Stock [Member]
Note 12 - Preferred Stock (Details) [Line Items]
Preferred Stock, Redemption Price Per Share (in Dollars per share)		12.15
Minimum Trading Price to Trigger Stock Conversion [Member]
Note 12 - Preferred Stock (Details) [Line Items]
Share Price (in Dollars per share)		17.22