Loans - Non Performing (Nonaccrual) Loans Held For Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	$ 8,928	$ 4,890
Nonaccrual	24,555	26,149
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	8,866	4,808
Nonaccrual	10,641	13,196
Real estate | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	641	1,053
Nonaccrual	672	3,704
Real estate | Construction/land/land development
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	342	1,319
Nonaccrual	592	2,962
Real estate | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	7,883	2,436
Nonaccrual	9,377	6,530
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	62	82
Nonaccrual	13,873	12,897
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	0	0
Nonaccrual	$ 41	$ 56