Loans - Impaired Loans and Recorded Investment in Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
With no related allowance recorded:
Unpaid Principal Balance, Total	$ 45,241	$ 64,662
Recorded Investment, Total	41,052	54,748
Allowance for Loan Losses Allocated, Total
Owner Occupied [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	10,320	26,235
Recorded Investment, With no related allowance recorded	10,054	22,022
Allowance for Loan Losses Allocated, With no related allowance recorded
Non Owner Occupied [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	2,861	4,292
Recorded Investment, With no related allowance recorded	2,861	3,185
Allowance for Loan Losses Allocated, With no related allowance recorded
Commercial [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	1,231	2,735
Recorded Investment, With no related allowance recorded	879	2,478
Allowance for Loan Losses Allocated, With no related allowance recorded
Residential [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded		3,242
Recorded Investment, With no related allowance recorded		2,242
Allowance for Loan Losses Allocated, With no related allowance recorded
Multifamily [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	2,921	2,994
Recorded Investment, With no related allowance recorded	2,921	2,994
Allowance for Loan Losses Allocated, With no related allowance recorded
1-4 family [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	14,782	9,726
Recorded Investment, With no related allowance recorded	12,831	8,470
Allowance for Loan Losses Allocated, With no related allowance recorded
Home Equity [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	1,705	2,220
Recorded Investment, With no related allowance recorded	1,188	1,212
Allowance for Loan Losses Allocated, With no related allowance recorded
Commercial & Industrial [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded	11,421	13,218
Recorded Investment, With no related allowance recorded	10,318	12,145
Allowance for Loan Losses Allocated, With no related allowance recorded
Lease Financing & Other [Member]
With no related allowance recorded:
Unpaid Principal Balance, With no related allowance recorded
Recorded Investment, With no related allowance recorded
Allowance for Loan Losses Allocated, With no related allowance recorded