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Fair Value of Assets and Liabilities - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial assets (recorded at amortized cost):
Investment securities held-to-maturity	$ 850,125	$ 845,239
Level 1 | Carrying Value
Financial assets (recorded at amortized cost):
Cash and cash equivalents	37,993	45,424
Financial liabilities (recorded at amortized cost):
Federal Home Loan Bank short-term borrowings	405,400	112,000
Level 1 | Fair Value
Financial assets (recorded at amortized cost):
Cash and cash equivalents	37,993	45,424
Financial liabilities (recorded at amortized cost):
Federal Home Loan Bank short-term borrowings	405,400	112,000
Level 2 | Carrying Value
Financial assets (recorded at amortized cost):
Investment securities held-to-maturity	958,560	972,207
Interest receivable	11,791	13,069
Financial liabilities (recorded at amortized cost):
Time deposits	144,067	119,030
Interest payable	234	75
Level 2 | Fair Value
Financial assets (recorded at amortized cost):
Investment securities held-to-maturity	850,125	845,239
Interest receivable	11,791	13,069
Financial liabilities (recorded at amortized cost):
Time deposits	144,071	118,333
Interest payable	234	75
Level 3 | Carrying Value
Financial assets (recorded at amortized cost):
Loans, net	2,088,998	2,069,563
Level 3 | Fair Value
Financial assets (recorded at amortized cost):
Loans, net	$ 1,999,187	$ 1,993,866

X

- Definition

This element represents the disclosures for fair value estimates for financial instruments required in the footnote disclosures to the financial statements. Carrying amount reprsents accrued interest payable on all forms of debt, including deposit liabilities, that has been incurred and is unpaid for time value of money. The carrying value may approximate fair value due to the short-term nature of their settlement dates.

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- Definition

This element represents the disclosures for fair value estimates for financial instruments required in the footnote disclosures to the financial statements. Carrying amount represents interest earned but not received from loan borrowers, investment security issuers and on other forms of short-term investment for time value of money. The carrying value may approximate fair value due to the short-term nature of their settlement dates.

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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-Name Accounting Standards Codification
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-Topic 320
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-URI https://asc.fasb.org/extlink&oid=126970911&loc=SL120269820-111563

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI https://asc.fasb.org/subtopic&trid=2196772

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