Loans - Schedule of Loans in Deferral (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	$ 2,154	$ 74,062
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	0	1,032
Commercial real estate - owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	582	14,248
Commercial real estate - non owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	0	32,549
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	610	12,839
Commercial and financial
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	624	11,915
Consumer
Financing Receivable, Nonaccrual [Line Items]
Value of loans deferred, not classified as TDRs	$ 338	$ 1,479