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Loans - Allowance for Loan Losses (Details) $ in Thousands | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) loan | Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($) | Mar. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | $ 29,232 | $ 21,187 | $ 26,840 |  | $ 29,232 | $ 23,637
Financing receivable, accrued interest, after allowance for credit loss |  |  | $ 6,100 |  |  |
Financing receivable, allowance for credit loss, period increase (decrease) | 1,100 |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 29,232 | 21,187 |  |  |  |
Charge-offs | (633) | (481) |  |  |  |
Recoveries | 189 | 159 |  |  |  |
Provision | (648) | 2,772 |  |  |  |
Allowance for Loan Losses, Ending Balance | 26,840 | 23,637 |  |  |  |
Number of loans individually evaluated for impairment | loan |  |  | 6 |  |  |
Number of loans with an allowance for credit loss on loans individually evaluated for impairment | loan |  |  | 1 |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |  |
Allowance for loan losses - Loans Individually Evaluated |  |  | $ 556 |  | 41 | 41
Allowance for loan losses - Loans Collectively Evaluated |  |  | 26,284 |  | 29,191 | 23,596
Ending Loan Balance - Individually Evaluated |  |  | 5,007 |  | 2,703 | 2,235
Ending Loan Balance - Collectively Evaluated |  |  | 2,634,236 |  | 2,592,327 | 2,411,958
Accounting Standards Update 2016-13 |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses |  |  |  | $ (1,300) |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | (1,300) |  |  |  | (1,300) |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | (1,300) |  |  |  |  |
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 27,932 |  |  |  | 27,932 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 27,932 |  |  |  |  |
Consumer |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 2,429 | 10,004 | 2,429 |  | 11,562 | 10,004
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 11,562 | 9,408 |  |  |  |
Charge-offs | (627) | (467) |  |  |  |
Recoveries | 189 | 159 |  |  |  |
Provision | 688 | 904 |  |  |  |
Allowance for Loan Losses, Ending Balance | 2,429 | 10,004 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |  |
Allowance for loan losses - Loans Individually Evaluated |  |  | 0 |  | 0 | 0
Allowance for loan losses - Loans Collectively Evaluated |  |  | 2,429 |  | 11,562 | 10,004
Ending Loan Balance - Individually Evaluated |  |  | 0 |  | 111 | 111
Ending Loan Balance - Collectively Evaluated |  |  | 861,171 |  | 859,657 | 824,598
Consumer | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | (9,383) |  |  |  | (9,383) |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | (9,383) |  |  |  |  |
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 2,179 |  |  |  | 2,179 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 2,179 |  |  |  |  |
Residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 8,170 | 4,929 | 8,170 |  | 5,507 | 4,929
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 5,507 | 4,563 |  |  |  |
Charge-offs | (3) | 0 |  |  |  |
Recoveries | 0 | 0 |  |  |  |
Provision | (1,269) | 366 |  |  |  |
Allowance for Loan Losses, Ending Balance | 8,170 | 4,929 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |  |
Allowance for loan losses - Loans Individually Evaluated |  |  | 0 |  | 22 | 37
Allowance for loan losses - Loans Collectively Evaluated |  |  | 8,170 |  | 5,485 | 4,892
Ending Loan Balance - Individually Evaluated |  |  | 1,156 |  | 1,417 | 953
Ending Loan Balance - Collectively Evaluated |  |  | 906,858 |  | 921,504 | 915,301
Residential | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 3,935 |  |  |  | 3,935 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 3,935 |  |  |  |  |
Residential | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 9,442 |  |  |  | 9,442 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 9,442 |  |  |  |  |
Commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 4,297 | 1,639 | 4,297 |  | 2,173 | 1,639
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 2,173 | 1,386 |  |  |  |
Charge-offs | (3) | (14) |  |  |  |
Recoveries | 0 | 0 |  |  |  |
Provision | 43 | 267 |  |  |  |
Allowance for Loan Losses, Ending Balance | 4,297 | 1,639 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |  |
Allowance for loan losses - Loans Individually Evaluated |  |  | 0 |  | 19 | 4
Allowance for loan losses - Loans Collectively Evaluated |  |  | 4,297 |  | 2,154 | 1,635
Ending Loan Balance - Individually Evaluated |  |  | 0 |  | 47 | 34
Ending Loan Balance - Collectively Evaluated |  |  | 288,551 |  | 240,507 | 147,066
Commercial | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 2,084 |  |  |  | 2,084 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 2,084 |  |  |  |  |
Commercial | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 4,257 |  |  |  | 4,257 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 4,257 |  |  |  |  |
Commercial Real Estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 11,944 | 7,065 | 11,944 |  | 9,990 | 7,065
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 9,990 | 5,830 |  |  |  |
Charge-offs | 0 | 0 |  |  |  |
Recoveries | 0 | 0 |  |  |  |
Provision | (110) | 1,235 |  |  |  |
Allowance for Loan Losses, Ending Balance | 11,944 | $ 7,065 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |  |
Allowance for loan losses - Loans Individually Evaluated |  |  | 556 |  | 0 | 0
Allowance for loan losses - Loans Collectively Evaluated |  |  | 11,388 |  | 9,990 | 7,065
Ending Loan Balance - Individually Evaluated |  |  | 3,851 |  | 1,128 | 1,137
Ending Loan Balance - Collectively Evaluated |  |  | $ 577,656 |  | 570,659 | $ 524,993
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 2,064 |  |  |  | 2,064 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | 2,064 |  |  |  |  |
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Finance receivable, allowance for credit losses | 12,054 |  |  |  | $ 12,054 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Loan Losses, Beginning Balance | $ 12,054 |  |  |  |  |

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