Disclosures about Fair Value of Financial Instruments - Nonrecurring Measurements (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	$ 32,024	$ 20,889
Foreclosed assets held-for-sale	2,502
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	0	0
Foreclosed assets held-for-sale	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	0	0
Foreclosed assets held-for-sale	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	32,024	$ 20,889
Foreclosed assets held-for-sale	$ 2,502