Allowance for Loan Losses - Additional Information (Detail) |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2015
USD ($)
Category
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] | |||
Number of categories occupied under commercial real estate loans | Category | 2 | ||
Originated Loans [Member] | |||
Financing Receivable, Recorded Investment, Past Due [Line Items] | |||
Impaired TDRs Loans | $ 29,269,000 | $ 45,676,000 | $ 56,739,000 |
Additional funds in TDRs | 35,000 | 54,000 | 25,000 |
PNCI Loans [Member] | |||
Financing Receivable, Recorded Investment, Past Due [Line Items] | |||
Impaired TDRs Loans | 1,396,000 | 1,307,000 | 901,000 |
Obligations to lend additional funds on TDRs | $ 0 | $ 0 | $ 0 |
Minimum [Member] | |||
Financing Receivable, Recorded Investment, Past Due [Line Items] | |||
Period of collateral payment of loan | 3 months | ||
Maximum [Member] | |||
Financing Receivable, Recorded Investment, Past Due [Line Items] | |||
Period of collateral payment of loan | 12 months |