Derivatives and Hedging Activities (Fair Value)(Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative, Fair Value, Net [Abstract]
Notional Amount	$ 1,920,663	$ 1,405,456
Derivative Assets	11,556	10,225
Derivative Asset, Fair Value, Gross Asset	13,477	11,588
Derivative Liability, Fair Value, Gross Liability	(6,734)	(10,365)
Derivative Liability Fair Value Amount Offset Against Other Derivatives	(1,921)	(1,363)
Derivative Asset Fair Value Amount Offset Against Other Derivatives	1,921	1,363
Derivative Liabilities	(4,813)	(9,002)
Forward Contracts [Member]
Derivative, Fair Value, Net [Abstract]
Notional Amount	837,935	526,382
Derivative Liability, Fair Value, Gross Liability	(1,064)	(578)
Interest Rate Swaption [Member]
Derivative, Fair Value, Net [Abstract]
Notional Amount	110,000	110,000
Derivative Liability, Fair Value, Gross Liability	0	(199)
Interest Rate Lock Commitments [Member]
Derivative, Fair Value, Net [Abstract]
Notional Amount	422,215	261,070
Derivative Liability, Fair Value, Gross Liability	(30)	(40)
Interest Rate Swap [Member]
Derivative, Fair Value, Net [Abstract]
Notional Amount	550,513	508,004
Derivative Liability, Fair Value, Gross Liability	(5,640)	(9,548)
Fair Value, Measurements, Recurring [Member] | Forward Contracts [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	999	3,630
Derivative Liabilities		(578)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaption [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	26	858
Derivative Liabilities		(199)
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	10,124	6,012
Derivative Liabilities	(30)	(40)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	2,328	1,088
Derivative Liabilities		(9,548)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Forward Contracts [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets		3,630
Derivative Asset, Fair Value, Gross Asset	999
Derivative Liabilities	(1,064)	(578)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaption [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral		858
Derivative Asset, Fair Value, Gross Asset	26
Derivative Liabilities		(199)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Lock Commitments [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	0
Derivative Liabilities	0	(9,548)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Asset, Fair Value, Gross Asset	2,328	1,088
Derivative Liabilities	(5,640)	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Forward Contracts [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaption [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Lock Commitments [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Asset, Fair Value, Gross Asset	10,124	6,012
Derivative Liabilities	(30)	(40)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Assets		0
Derivative Liabilities	$ 0	$ 0