Loan Servicing (Narrative) (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans	$ 1,300,000,000	$ 1,400,000,000	$ 1,330,000,000
Serviced sold mortgage loans with recourse	9,300,000	14,600,000	10,700,000
Mortgage Loans Sold with Recourse, Reserve	813,000		1,000,000
Servicing fees included in other service income	$ 900,000	$ 900,000

Amount of revenue from servicing real estate mortgages, credit cards, and other financial assets held by others. Includes premiums received in lieu of regular servicing fees.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 13

-Article 9

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13 (d))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration