Loans - Non-Covered Loans Modified as TDR (Detail) (Troubled Debt Restructurings Subsequently Defaulted [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts	4
Recorded Investment	$ 7,070
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts	3
Recorded Investment	6,996
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts	1
Recorded Investment	$ 74