Allowance for Loan Losses - Additional information (Details)	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($) loan	Mar. 31, 2021 loan	Dec. 31, 2021 USD ($) loan
Financing receivable, allowance for credit loss
Impaired loan balance	$ 542,000		$ 549,000
Loans and Leases Receivable, before Fees, Gross	1,628,480,000		1,665,554,000
Recorded investment in TDR's	$ 542,000		$ 549,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| loan	0	0
Financing Receivable, Troubled Debt Restructuring, Number Of Contracts That Require Special Reserve \| loan	0		0
Financing Receivable, Troubled Debt Restructuring, Additional Commitment To Disburse Funds	$ 0		$ 0
PPP loans \| PPP Loan
Financing receivable, allowance for credit loss
Impaired loan balance	$ 7,800,000		$ 69,600,000

Additional commitment to disburse funds on financing receivable contracts modified as troubled debt restructuring.

No definition available.

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring, that require special reserve.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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