Fair Value - Fair Value Measurement (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed Gain/(Loss) From Loan Sale	$ (1,544)
Interest Rate Movement Effect	2,151
Servicing Rights Value	5,922
Security Price Change	(1,950)
Total Fair Value Measurement Gain/(Loss)	4,579
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	413,089
Assumed Gain/(Loss) From Loan Sale	(1,088)
Interest Rate Movement Effect	1,413
Servicing Rights Value	4,121
Total Fair Value Measurement Gain/(Loss)	4,446
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Forward Sales Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	504,091
Security Price Change	(1,950)
Total Fair Value Measurement Gain/(Loss)	(1,950)
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgages Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	168,387
Assumed Gain/(Loss) From Loan Sale	(456)
Interest Rate Movement Effect	738
Servicing Rights Value	1,801
Total Fair Value Measurement Gain/(Loss)	$ 2,083