Fair Value of Financial Instruments - Quantitative Information About Level III Significant Unobservable Inputs (Details) $ in Thousands	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Non-recurring | Equity securities | Level III
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	$ 19,081	$ 18,514
Non-recurring | Impaired loans
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	16,201	8,909
Non-recurring | Impaired loans | Level III
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	16,201	8,909
Non-recurring | Other real estate owned
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	8,907	1,397
Non-recurring | Other real estate owned | Level III
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	8,907	1,397
Recurring | Municipal Securities | Level III
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	40,457	37,259
Recurring | Interest rate lock commitment | Level III
Quantitative Information about Level III Fair Value Measurements
Assets, fair value	$ 7,338	$ 1,660
Appraisal adjustments | Non-recurring | Impaired loans | Appraisal of collateral | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Impaired loans	0.20	0.20
Appraisal adjustments | Non-recurring | Impaired loans | Appraisal of collateral | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Impaired loans	0.62	0.62
Appraisal adjustments | Non-recurring | Other real estate owned | Appraisal of collateral | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Other real estate owned	0.20	0.20
Appraisal adjustments | Non-recurring | Other real estate owned | Appraisal of collateral | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Other real estate owned	0.30	0.30
Appraisal adjustments | Recurring | Municipal Securities | Appraisal of bond | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Municipal Securities	0.05	0.05
Appraisal adjustments | Recurring | Municipal Securities | Appraisal of bond | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Municipal Securities	0.15	0.15
Liquidation expense | Non-recurring | Impaired loans | Appraisal of collateral | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Impaired loans	0.05	0.05
Liquidation expense | Non-recurring | Impaired loans | Appraisal of collateral | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Impaired loans	0.10	0.10
Liquidation expense | Non-recurring | Other real estate owned | Appraisal of collateral | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Other real estate owned	0.05	0.05
Liquidation expense | Non-recurring | Other real estate owned | Appraisal of collateral | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Other real estate owned	0.10	0.10
Cost minus impairment | Non-recurring | Equity securities | Net asset value | Level III
Quantitative Information about Level III Fair Value Measurements
Equity securities	0	0
Pull through rates | Recurring | Interest rate lock commitment | Pricing model | Level III | Minimum
Quantitative Information about Level III Fair Value Measurements
Interest rate lock commitments	0.76	0.77
Pull through rates | Recurring | Interest rate lock commitment | Pricing model | Level III | Maximum
Quantitative Information about Level III Fair Value Measurements
Interest rate lock commitments	0.84	0.82