Nonaccrual Loans and Leases (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	$ 32,440	$ 31,648
Commercial Loan | Commercial and industrial
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	321	33
Commercial Loan | Real estate mortgage
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	3,764	3,868
Commercial Loan | Multi-family
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	1,938	1,972
Commercial Loan | SBA
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	57	10
Commercial Loan | Leases financing
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	119
Consumer Loan | Real estate 1-4 family first mortgage
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	20,547	20,032
Consumer Loan | Heloc First Liens
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	5,437	5,482
Consumer Loan | Heloc Second Liens
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	212	216
Consumer Loan | HELOC, home equity loans, and other consumer credit
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	45	35
Traditional Loans
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	24,965	23,950
Traditional Loans | Commercial Loan | Commercial and industrial
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	321	33
Traditional Loans | Commercial Loan | Real estate mortgage
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	3,764	3,868
Traditional Loans | Commercial Loan | Multi-family
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	1,938	1,972
Traditional Loans | Commercial Loan | SBA
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	57	10
Traditional Loans | Commercial Loan | Leases financing
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	119
Traditional Loans | Consumer Loan | Real estate 1-4 family first mortgage
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	18,721	18,032
Traditional Loans | Consumer Loan | HELOC, home equity loans, and other consumer credit
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	45	35
Non Traditional Mortgages
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	7,475	7,698
Non Traditional Mortgages | Consumer Loan | Real estate 1-4 family first mortgage
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	1,826	2,000
Non Traditional Mortgages | Consumer Loan | Heloc First Liens
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	5,437	5,482
Non Traditional Mortgages | Consumer Loan | Heloc Second Liens
Non Accrual Loans and leases [Line Items]
Nonaccrual loans and leases, Total	$ 212	$ 216