Fair Values Of Assets And Liabilities (Summary Of Assets Measured At Fair Value On A Nonrecurring Basis) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Losses Recognized, Impaired loans—collateral based	$ 7,564
Fair Value Losses Recognized, Other real estate owned	6,172	[1]
Fair Value Losses Recognized, Total	13,736
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans - collateral based	68,355
Other real estate owned	129,279
Total	197,634
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans - collateral based	0
Other real estate owned	0
Total	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans - collateral based	0
Other real estate owned	0
Total	0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans - collateral based	68,355
Other real estate owned	129,279
Total	$ 197,634

[1] Fair value losses recognized on other real estate owned include valuation adjustments and charge-offs during the respective period.