Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified		0 Months Ended
Mar. 31, 2013 Series A senior preferred stock	Apr. 24, 2013 Bank	Apr. 24, 2013 Subsequent Events Series A senior preferred stock	Apr. 24, 2013 Subsequent Events Bank Common Stock
Subsequent Events
Amount of dividend requested for approval for repurchase of share		$ 25
Repurchase of shares			21,000
Number of shares to be purchased against warrants	611,650			611,650

The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant