Basis of Presentation (Fair Value Of the Company's Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net gain (loss) from change in fair value	$ (2,200)	$ 400	$ (4,100)	$ 1,300
Other Assets	12,291		12,291		$ 18,414
Accrued and Other Liabilities	1,544		1,544		2,368
Gain (Loss) on Sale of Mortgage Loans	27,700	$ 25,800	52,900	$ 47,300
Interest rate lock commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Assets	9,957		9,957		9,194
Accrued and Other Liabilities	450		450		501
Forward contracts
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Assets	1,988		1,988		8,085
Accrued and Other Liabilities	648		648		1,004
Whole loan commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Assets	346		346		1,135
Accrued and Other Liabilities	$ 446		$ 446		$ 863