Derivative Financial Instruments (Derivative instruments gains and losses recognized (not designated as hedging instruments)) (Details) - Gains on sale of loans held for sale - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest rate lock commitments
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized	$ (361)	$ (1,924)	$ 3,471	$ 3,393
Forward commitments
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized	$ (4,237)	$ 1,505	$ (662)	$ (1,474)

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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