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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) segment trust large_borrower shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Jan. 01, 2021 USD ($) | Dec. 31, 2018 USD ($)
Accounting Policy [Line Items] |  |  |  |  |
Number of wholly-owned Trusts | trust | 1 |  |  |  |
Number of operating business lines | segment | 2 |  |  |  |
Maturity period of securities at acquisition | 90 days |  |  |  |
Advertising, promotion and marketing expenses | $ 2,741 | $ 2,320 | $ 2,373 |  |
Anti-dilutive shares (in shares) | shares | 0 | 45,062 | 0 |  |
Commercial and construction loans | $ 572,700 | $ 728,200 |  |  |
PPP loans | $ 1,402,147 | 1,422,914 |  |  |
Large borrowing relationships | large_borrower | 32 |  |  |  |
Unfunded commitments to large borrowers | $ 153,300 |  |  |  |
Increase in retained earnings | 237,817 | 221,575 | $ 207,117 |  | $ 205,947
Decrease in ACL on loans | (11,739) | (21,136) | (19,088) |  |
Increase in ACL on unfunded commitments | 1,100 | 187 |  |  |
Decrease in deferred tax assets | (3,278) | (1,980) | (2,535) |  |
Assets | 2,724,719 | 2,121,798 | 1,643,996 |  |
Loans | 1,413,886 | 1,444,050 |  |  |
Junior subordinated debentures | 10,310 | 10,310 |  |  |
Derivative notional amount | 212,600 | 196,000 |  |  |
LIBOR |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Assets | 180,500 |  |  |  |
Loans | 102,200 |  |  |  |
Debt securities | 78,100 |  |  |  |
Junior subordinated debentures | 10,000 |  |  |  |
Derivative notional amount | 143,200 |  |  |  |
LIBOR | Interest rate swaps | Subordinated Debt |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Derivative notional amount | 10,000 |  |  |  |
LIBOR | Commercial Banking Customers | Interest rate swaps |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Derivative notional amount | 71,600 |  |  |  |
LIBOR | Third Party Financial Institutions | Interest rate swaps |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Derivative notional amount | 71,600 |  |  |  |
LIBOR | Third Party Institutions | Interest rate swaps |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Derivative notional amount | 81,600 |  |  |  |
Purchased Receivable |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Decrease in ACL on purchased receivables | 0 | (73) | (94) |  | (190)
Cumulative effect, period of adoption, adjustment |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Increase in retained earnings |  | 2,400 | 0 |  |
Decrease in ACL on loans |  | 4,511 |  | $ 4,500 |
Increase in ACL on unfunded commitments |  |  |  | 1,200 |
Decrease in deferred tax assets |  |  |  | 954 |
Cumulative effect, period of adoption, adjustment | Purchased Receivable |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Decrease in ACL on purchased receivables |  | 73 |  | 73 |
Retained Earnings |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Increase in retained earnings | $ 204,046 | 173,498 | 149,615 |  | $ 137,452
Retained Earnings | Cumulative effect, period of adoption, adjustment |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Increase in retained earnings |  | 2,400 | (139) | $ 2,400 |
Customer Concentration Risk | Financing Receivable | 32 Large Borrowing Relationships |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Concentration risk, percent | 33.00% |  |  |  |
Commercial |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Decrease in ACL on loans | $ (3,027) | (7,973) | $ (6,604) |  |
Loans | 448,338 | 772,468 |  |  |
Commercial | PPP Loans |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
PPP loans | $ 118,200 | $ 304,600 |  |  |
Buildings |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Useful Life | 39 years |  |  |  |
Minimum | Furniture and equipment |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Useful Life | 3 years |  |  |  |
Minimum | Leasehold improvements |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Useful Life | 2 years |  |  |  |
Maximum | Furniture and equipment |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Useful Life | 7 years |  |  |  |
Maximum | Leasehold improvements |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Useful Life | 15 years |  |  |  |
Pacific Wealth Advisors Llc |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Equity interest percentage | 24.00% |  |  |  |
HomeState Mortgage LLC |  |  |  |  |
Accounting Policy [Line Items] |  |  |  |  |
Equity interest percentage | 30.00% |  |  |  |

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