Income Taxes - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for loan losses	$ 34,031	$ 10,692
Acquired loans	0	9,722
Deferred Tax Assets, Loans Held for Sale	8,058	0
Other real estate	896	657
Deferred compensation	2,585	2,462
Accrued compensation	5,391	1,607
Deferred Tax Assets, Operating Loss Carryforwards	6,460	7,066
Other deferred tax assets	3,086	791
Total deferred tax assets	60,507	32,997
Deferred Tax Liabilities, Asset Purchase Tax Basis Difference, Net	3,413	0
Deferred Tax Liabilities, Other	4,369	2,407
Deferred tax liabilities:
Unrealized gains on securities	12,189	5,847
Deferred Tax Liabilities, Goodwill and Intangible Assets	7,800	7,432
Total deferred tax liabilities	27,771	15,686
Deferred Tax Assets, Gross	32,736	17,311
Deferred Tax Assets, Net	29,804	14,379
Deferred Tax Assets, Valuation Allowance	2,932	2,932
Other Assets
Deferred tax liabilities:
Deferred Tax Assets, Net	$ 29,800	$ 14,400