Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - shares	6 Months Ended
Jun. 30, 2014
Series F Noncumulative Perpetual Preferred Stock One [Member]
Redemption of shares of Series F Noncumulative Perpetual Preferred Stock, net	15,000
Series F Noncumulative Perpetual Preferred Stock Two [Member]
Redemption of shares of Series F Noncumulative Perpetual Preferred Stock, net	14,867

Number of stock bought back by the entity at the exercise price or redemption price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration