Fair Value Measurement of Assets and Liabilities - Assets and Liabilities Measured at Fair Value on Recurring and Non-Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Investment securities:
Equity securities	$ 64,464	$ 48,731
Trading debt securities	3,973	13,438
Available for sale debt securities:
Available for sale debt securities	1,296,576	1,261,397
Loans held for sale	20,640	$ 18,118
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets
Liabilities
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Accrued expenses and other liabilities
Non-recurring fair value measurements:
Unpaid principal balances of loans held for sale	20,100	$ 17,900
U.S. Treasury securities
Available for sale debt securities:
Available for sale debt securities	288,157	279,498
U.S. government agency securities
Available for sale debt securities:
Available for sale debt securities	23,702	26,964
Obligations of states and political subdivisions
Available for sale debt securities:
Available for sale debt securities	191,690	146,811
Residential mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities	626,572	629,818
Corporate and other debt securities
Available for sale debt securities:
Available for sale debt securities	166,455	178,306
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements
Investment securities:
Equity securities	23,307	23,494
Trading debt securities	3,973	3,282
Available for sale debt securities:
Available for sale debt securities	288,157	279,498
Loans held for sale	0	0
Other assets	0	0
Total assets	315,437	306,274
Liabilities
Other liabilities	0	0
Total liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements \| U.S. Treasury securities
Available for sale debt securities:
Available for sale debt securities	288,157	279,498
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements \| U.S. government agency securities
Available for sale debt securities:
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements \| Obligations of states and political subdivisions
Available for sale debt securities:
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements \| Residential mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring fair value measurements \| Corporate and other debt securities
Available for sale debt securities:
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-recurring fair value measurements
Non-recurring fair value measurements:
Non-performing loans held for sale	0
Collateral dependent loans	0	0
Foreclosed assets	0	0
Total	0	0
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements
Investment securities:
Equity securities	0	0
Trading debt securities	0	10,156
Available for sale debt securities:
Available for sale debt securities	1,008,419	981,899
Loans held for sale	20,640	18,118
Other assets	466,227	467,127
Total assets	1,495,286	1,477,300
Liabilities
Other liabilities	488,103	607,237
Total liabilities	488,103	607,237
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements \| U.S. Treasury securities
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements \| U.S. government agency securities
Available for sale debt securities:
Available for sale debt securities	23,702	26,964
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements \| Obligations of states and political subdivisions
Available for sale debt securities:
Available for sale debt securities	191,690	146,811
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements \| Residential mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities	626,572	629,818
Significant Other Observable Inputs (Level 2) \| Recurring fair value measurements \| Corporate and other debt securities
Available for sale debt securities:
Available for sale debt securities	166,455	178,306
Significant Other Observable Inputs (Level 2) \| Non-recurring fair value measurements
Non-recurring fair value measurements:
Non-performing loans held for sale	10,000
Collateral dependent loans	0	0
Foreclosed assets	0	0
Total	10,000	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements
Investment securities:
Equity securities	0	0
Trading debt securities	0	0
Available for sale debt securities:
Available for sale debt securities	0	0
Loans held for sale	0	0
Other assets	0	0
Total assets	0	0
Liabilities
Other liabilities	0	0
Total liabilities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements \| U.S. Treasury securities
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements \| U.S. government agency securities
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements \| Obligations of states and political subdivisions
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements \| Residential mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring fair value measurements \| Corporate and other debt securities
Available for sale debt securities:
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) \| Non-recurring fair value measurements
Non-recurring fair value measurements:
Non-performing loans held for sale	0
Collateral dependent loans	90,580	92,923
Foreclosed assets	1,444	1,937
Total	92,024	94,860
Fair Value \| Recurring fair value measurements
Investment securities:
Trading debt securities	3,973	13,438
Available for sale debt securities:
Available for sale debt securities	1,296,576	1,261,397
Loans held for sale	20,640	18,118
Other assets	466,227	467,127
Total assets	1,822,849	1,793,673
Liabilities
Other liabilities	488,103	607,237
Total liabilities	488,103	607,237
Fair Value \| Recurring fair value measurements \| U.S. Treasury securities
Available for sale debt securities:
Available for sale debt securities	288,157	279,498
Fair Value \| Recurring fair value measurements \| U.S. government agency securities
Available for sale debt securities:
Available for sale debt securities	23,702	26,964
Fair Value \| Recurring fair value measurements \| Obligations of states and political subdivisions
Available for sale debt securities:
Available for sale debt securities	191,690	146,811
Fair Value \| Recurring fair value measurements \| Residential mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities	626,572	629,818
Fair Value \| Recurring fair value measurements \| Corporate and other debt securities
Available for sale debt securities:
Available for sale debt securities	166,455	178,306
Fair Value \| Non-recurring fair value measurements
Non-recurring fair value measurements:
Non-performing loans held for sale	10,000
Collateral dependent loans	90,580	92,923
Foreclosed assets	1,444	1,937
Total	102,024	94,860
Fair Value \| Fair Value, Inputs, Level 1, Level 2, and Level 3 \| Recurring fair value measurements
Investment securities:
Equity securities	23,307	23,494
Fair Value \| Significant Unobservable Inputs (Level 3)
Investment securities:
Equity securities	29,031	15,138
Fair Value \| NAV \| Recurring fair value measurements
Investment securities:
Equity securities	$ 12,126	$ 10,099

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

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This is the principal amount outstanding for loans which are in the process of being securitized as of the date of the statement of financial position (across all types of loans).

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Fair value of the collateral dependent impaired loans.

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