Fair Value Measurements (Assets for which Nonrecurring Changes in Fair Value have been Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
OREO [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value		$ 6,899		$ 6,899
Gains (Losses) from Fair Value Changes		(146)		(538)
OREO [Member] | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value		6,899		6,899
OREO and Repossessed Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value	$ 7,923		$ 7,923
Gains (Losses) from Fair Value Changes	(372)		(740)
OREO and Repossessed Assets [Member] | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value	7,923		7,923
Impaired Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value	59,678	59,564	59,678	59,564
Gains (Losses) from Fair Value Changes	(10,623)	(3,871)	(18,873)	(16,995)
Impaired Loans | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value	$ 59,678	59,564	$ 59,678	59,564
Residential Servicing Rights [Member] [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value		8,622		8,622
Gains (Losses) from Fair Value Changes		(20)		(20)
Residential Servicing Rights [Member] [Member] | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Nonrecurring Changes in Fair Value		$ 8,622		$ 8,622