Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) (USD $)	3 Months Ended
	Jun. 30, 2014 Series F Noncumulative Perpetual Preferred Stock Redemption Two[Member] Preferred Stock [Member]	Mar. 31, 2014 Series F Noncumulative Perpetual Preferred Stock Redemption Two[Member] Preferred Stock [Member]	Jun. 30, 2014 Common Stock [Member]	Mar. 31, 2014 Common Stock [Member]	Jun. 30, 2013 Common Stock [Member]	Mar. 31, 2013 Common Stock [Member]
Redemption, shares	14,867	15,000
Share issuance, Employee Stock Purchase Plan			8,361	6,189	9,560	5,884
Share issuance, stock options exercised			630	9,814	3,769	19,278
Share exchange in connection with restricted stock				10,300		16,798
Share exchange, stock options exercised						7,048
Share issuance, acquisition					834,715