Fair Value of Financial Instruments and Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Assets
Investment securities available for sale, at fair value	$ 653,292		$ 938,164
Investment securities held to maturity	288,810	$ 309,700
Carrying Value
Assets
Cash and short-term investments	156,417		197,232
Investment securities available for sale, at fair value	653,292		938,164
Investment securities held to maturity	307,009
Other investments, at cost	13,827		14,012
Loans held for sale	24,228		38,150
Loans, net	1,341,113		1,325,067
Liabilities
Deposits	2,350,786		2,374,608
Federal Home Loan Bank advances	51,712		51,656
Other borrowings	24,229		36,792
Estimated Fair Value
Assets
Cash and short-term investments	156,417		197,232
Investment securities available for sale, at fair value	653,292		938,164
Investment securities held to maturity	288,810
Other investments, at cost	13,827		14,012
Loans held for sale	24,228		38,150
Loans, net	1,328,231		1,328,853
Liabilities
Deposits	2,351,458		2,375,385
Federal Home Loan Bank advances	51,656		51,162
Other borrowings	24,229		36,796
Estimated Fair Value \| Level 1
Assets
Cash and short-term investments	156,417		197,232
Investment securities available for sale, at fair value	0		87,551
Investment securities held to maturity	0
Other investments, at cost	0		5,574
Loans held for sale	0		0
Loans, net	0		0
Liabilities
Deposits	0		0
Federal Home Loan Bank advances	0		0
Other borrowings	0		0
Estimated Fair Value \| Level 2
Assets
Cash and short-term investments	0		0
Investment securities available for sale, at fair value	653,292		850,613
Investment securities held to maturity	288,810
Other investments, at cost	9,744		4,183
Loans held for sale	24,228		38,150
Loans, net	0		0
Liabilities
Deposits	2,351,458		2,375,385
Federal Home Loan Bank advances	51,656		51,162
Other borrowings	24,229		36,796
Estimated Fair Value \| Level 3
Assets
Cash and short-term investments	0		0
Investment securities available for sale, at fair value	0		0
Investment securities held to maturity
Other investments, at cost	4,083		4,255
Loans held for sale	0		0
Loans, net	1,328,231		1,328,853
Liabilities
Deposits	0		0
Federal Home Loan Bank advances	0		0
Other borrowings	$ 0		$ 0

Other Investments, Fair Value Disclosure

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Fair value of Federal Home Loan Bank (FHLBank) advances carried under the fair value option.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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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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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
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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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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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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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