Non Accrual Loans and Loans Past Due 90 Days Still on Accrual (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Non Accrual Loans and Leases Status [Line Items]
Loans past due 90 days or more still on accrual
The Company maintains specific allowance allocations for these loans of $62 in 2014 and $1,415 in 2013	32,440	31,648
Traditional Loans
Non Accrual Loans and Leases Status [Line Items]
Loans past due 90 days or more still on accrual
The Company maintains specific allowance allocations for these loans of $62 in 2014 and $1,415 in 2013	24,965	23,950
Non Traditional Mortgages
Non Accrual Loans and Leases Status [Line Items]
Loans past due 90 days or more still on accrual
The Company maintains specific allowance allocations for these loans of $62 in 2014 and $1,415 in 2013	$ 7,475	$ 7,698