Fair Value - Fair Value Measurement (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]
Assumed Gain/(Loss) From Loan Sale	$ (1,647)
Interest Rate Movement Effect	(1,682)
Servicing Rights Value	3,316
Security Price Change	953
Total Fair Value Measurement Gain/(Loss)	940
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	218,827
Assumed Gain/(Loss) From Loan Sale	(980)
Interest Rate Movement Effect	(902)
Servicing Rights Value	1,997
Total Fair Value Measurement Gain/(Loss)	115
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	308,679
Security Price Change	953
Total Fair Value Measurement Gain/(Loss)	953
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	123,961
Assumed Gain/(Loss) From Loan Sale	(667)
Interest Rate Movement Effect	(780)
Servicing Rights Value	1,319
Total Fair Value Measurement Gain/(Loss)	$ (128)