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Loans and Allowance for Credit Losses - Concentrations of Credit Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans, at amortized cost	$ 2,255,645	$ 2,088,556
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of loans by class to all loans	70.00%	61.00%
Loans secured by real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of loans by class to all loans	86.00%	77.00%
Loans secured by real estate | Commercial | Small Business Administration Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans, at amortized cost	$ 180,400

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Loans and Leases Receivable, Ratio of Class to All Loans

+ References

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- Definition

Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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