Fair Value Measurements (Schedule Of Valuation Methodology And Unobservable Inputs) (Detail) (USD $) In Thousands, unless otherwise specified					12 Months Ended					12 Months Ended				12 Months Ended
	Dec. 31, 2013 Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2012 Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Minimum [Member] Prepayment speeds [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Minimum [Member] Discount rate [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Maximum [Member] Prepayment speeds [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Maximum [Member] Discount rate [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Other Real Estate [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Other Real Estate [Member] Discount for costs to sell [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Other Real Estate [Member] Minimum [Member] Discount for appraisal type [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Other Real Estate [Member] Maximum [Member] Discount for appraisal type [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Impaired Loans [Member] Fair Value, Measurements, Nonrecurring [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Impaired Loans [Member] Minimum [Member] Discount for date appraisal [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Impaired Loans [Member] Minimum [Member] Discount for costs to sell [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Impaired Loans [Member] Maximum [Member] Discount for date appraisal [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Impaired Loans [Member] Maximum [Member] Discount for costs to sell [Member]
Fair Value Measurements [Line Items]
Impaired Loans	$ 12,547,203	$ 11,851,567	$ 12,515,714	$ 12,005,555									$ 27,220
Other Real Estate									2,483
Mortgage Servicing Rights			$ 29,150
Range of Inputs					6.40%	1.50%	26.40%	4.70%		8.00%	0.00%	50.00%		0.00%	3.00%	15.00%	8.00%