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v3.19.1

Loans (Additional Information) (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) loan | Mar. 31, 2018 USD ($) loan | Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of loans modified as troubled debt restructurings | loan | 0 | 0 |
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring | $ 0 |  | $ 0
Number of loans modified as troubled debt restructuring subsequently defaulted | loan | 0 | 0 |
Threshold amount to individually classify loans by credit risk | $ 250,000 |  |
Carrying amount of consumer mortgage loans secured by residential real estate properties | 0 |  | $ 58,000
Loans Acquired With Deteriorated Credit Quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Increase in allowance for loan losses | 277,000 | $ 30,000 |
Reversal of allowance for loan losses | $ 3,000 | $ 0 |

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