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Loans and Allowance for Credit Losses - Details on Allowance for Loan Losses and Recorded Investment by Loan Classification and Impairment Evaluation Method (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 48,599	$ 74,292
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	36,652	51,812
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,634	22,437
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	313	43
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,547	15,681
Commercial real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	5,547	15,681
Commercial real estate - Owner occupied | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	6,820	7,000
Commercial real estate - Non-owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	6,820	7,000
Commercial real estate - Non-owner occupied | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial real estate - Non-owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer real estate – mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	22,341	27,082
Consumer real estate – mortgage | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	22,341	27,082
Consumer real estate – mortgage | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer real estate – mortgage | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	1,944	2,049
Construction and land development | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	1,944	2,049
Construction and land development | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Construction and land development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,923	22,476
Commercial and industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Commercial and industrial | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	11,634	22,437
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	289	39
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	24	4
Consumer and other | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer and other | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 24	$ 4

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No definition available.

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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