Fair Value Measurements - Summary of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 1,862,270	$ 1,618,273
US Government-sponsored Enterprises Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	276,040	296,446
US States and Political Subdivisions Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	409,197	432,171
Residential Mortgage-Backed Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,027,394	700,381
Corporate Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	128,893	181,701
US Treasury Bill Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	20,746	7,574
Recurring basis \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,862,270	1,618,273
Other Investments	2,983	2,941
Derivative Asset	15,144	17,789
Total assets	1,880,397	1,639,003
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Derivative Liability	18,692	16,184
Liabilities, Fair Value Disclosure	18,692	16,184
Recurring basis \| US Government-sponsored Enterprises Debt Securities [Member] \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	276,040	296,446
Recurring basis \| US States and Political Subdivisions Debt Securities [Member] \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	409,197	432,171
Recurring basis \| Residential Mortgage-Backed Securities [Member] \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,027,394	700,381
Recurring basis \| Corporate Debt Securities [Member] \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	20,746	181,701
Recurring basis \| US Treasury Bill Securities [Member] \| Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	128,893	7,574
Recurring basis \| Fair Value, Inputs, Level 1 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Other Investments	0	0
Derivative Asset	0	0
Total assets	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Derivative Liability	0	0
Liabilities, Fair Value Disclosure	0	0
Recurring basis \| Fair Value, Inputs, Level 1 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 1 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 1 [Member] \| Residential Mortgage-Backed Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 1 [Member] \| Corporate Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 1 [Member] \| US Treasury Bill Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 2 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,862,270	1,618,273
Other Investments	2,983	2,941
Derivative Asset	15,144	17,789
Total assets	1,880,397	1,639,003
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Derivative Liability	18,692	16,184
Liabilities, Fair Value Disclosure	18,692	16,184
Recurring basis \| Fair Value, Inputs, Level 2 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	276,040	296,446
Recurring basis \| Fair Value, Inputs, Level 2 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	409,197	432,171
Recurring basis \| Fair Value, Inputs, Level 2 [Member] \| Residential Mortgage-Backed Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,027,394	700,381
Recurring basis \| Fair Value, Inputs, Level 2 [Member] \| Corporate Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	20,746	181,701
Recurring basis \| Fair Value, Inputs, Level 2 [Member] \| US Treasury Bill Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	128,893	7,574
Recurring basis \| Fair Value, Inputs, Level 3 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Other Investments	0	0
Derivative Asset	0	0
Total assets	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Derivative Liability	0	0
Liabilities, Fair Value Disclosure	0	0
Recurring basis \| Fair Value, Inputs, Level 3 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 3 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 3 [Member] \| Residential Mortgage-Backed Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 3 [Member] \| Corporate Debt Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Recurring basis \| Fair Value, Inputs, Level 3 [Member] \| US Treasury Bill Securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 0	$ 0

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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(12))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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