Loans and the Allowance for Credit Losses - TDRs Defaulted Later Restructured (Detail) $ in Thousands |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2018
USD ($)
Defaults
|
Mar. 31, 2017
USD ($)
Defaults
|
|
| Financing Receivable, Modifications [Line Items] | ||
| Number of Defaults | Defaults | 2 | 1 |
| Recorded Investment | $ | $ 129 | $ 9 |
| Residential Real Estate [Member] | ||
| Financing Receivable, Modifications [Line Items] | ||
| Number of Defaults | Defaults | 1 | |
| Recorded Investment | $ | $ 122 | |
| Consumer [Member] | ||
| Financing Receivable, Modifications [Line Items] | ||
| Number of Defaults | Defaults | 1 | |
| Recorded Investment | $ | $ 9 | |
| Home Equity [Member] | ||
| Financing Receivable, Modifications [Line Items] | ||
| Number of Defaults | Defaults | 1 | |
| Recorded Investment | $ | $ 7 | |