Fair Value Accounting and Measurement - Schedule of Assets On A Nonrecurring Basis (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 6,389	$ 6,558
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,389	6,558
Real estate owned and repossessed assets	154	124
Total assets measured at fair value	6,543	6,682
Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Real estate owned and repossessed assets	0	0
Total assets measured at fair value	0	0
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Real estate owned and repossessed assets	0	0
Total assets measured at fair value	0	0
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,389	6,558
Real estate owned and repossessed assets	154	124
Total assets measured at fair value	$ 6,543	$ 6,682
Discount Rate | Real estate owned and repossessed assets | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, discount to appraisal rate	0.00	0.00
Discount Rate | Real estate owned and repossessed assets | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, discount to appraisal rate	0.10	0.10
Discount Rate | Real estate owned and repossessed assets | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, discount to appraisal rate	0.05	0.05