Quantitative Information about Level 3 Fair Value Measurements (Details) - Non-Recurring Measurements $ in Thousands		Mar. 31, 2020 USD ($) Input		Dec. 31, 2019 USD ($) Input
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		$ 150		$ 1,983
Collateral-dependent impaired loans, net of ALLL | $		1,818		23
Level 3
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		150		1,983
Collateral-dependent impaired loans, net of ALLL | $		1,818		23
Level 3 | Sales Comparison Approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $				1,983
Level 3 | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		150
Collateral-dependent impaired loans, net of ALLL | $		225
Level 3 | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL | $				14
Level 3 | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL | $		297		$ 9
Level 3 | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL | $		$ 1,296
Level 3 | Minimum Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.100		0.060
Collateral-dependent impaired loans, net of ALLL		0.100
Level 3 | Minimum Range | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned				0
Collateral-dependent impaired loans, net of ALLL	[1]			0
Level 3 | Minimum Range | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100	[1]	0.100
Level 3 | Minimum Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100
Level 3 | Maximum Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.100		0.100
Collateral-dependent impaired loans, net of ALLL		0.100
Level 3 | Maximum Range | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned				0.111
Collateral-dependent impaired loans, net of ALLL	[1]			0
Level 3 | Maximum Range | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100	[1]	0.100
Level 3 | Maximum Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100
Level 3 | Weighted Average Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.100		0.073
Collateral-dependent impaired loans, net of ALLL		0.100
Level 3 | Weighted Average Range | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned				0.045
Collateral-dependent impaired loans, net of ALLL	[1]			0
Level 3 | Weighted Average Range | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100	[1]	0.100
Level 3 | Weighted Average Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL		0.100

[1] The range for selling cost inputs represents reductions to the fair value of the assets.