Loans - Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020 USD ($) contract	Mar. 31, 2019 USD ($) contract	Mar. 31, 2020 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	5	2	3
Pre- Modification Outstanding Recorded Investment	$ 482	$ 1,995
Post- Modification Outstanding Recorded Investment	$ 482	$ 1,995	$ 1,400
Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	0	0
Pre- Modification Outstanding Recorded Investment	$ 0	$ 0
Post- Modification Outstanding Recorded Investment	$ 0	$ 0
Commercial real estate - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	0	1
Pre- Modification Outstanding Recorded Investment	$ 0	$ 180
Post- Modification Outstanding Recorded Investment	$ 0	$ 180
Commercial real estate - non owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	0	0
Pre- Modification Outstanding Recorded Investment	$ 0	$ 0
Post- Modification Outstanding Recorded Investment	$ 0	$ 0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	1	0
Pre- Modification Outstanding Recorded Investment	$ 45	$ 0
Post- Modification Outstanding Recorded Investment	$ 45	$ 0
Commercial and financial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	4	1
Pre- Modification Outstanding Recorded Investment	$ 437	$ 1,815
Post- Modification Outstanding Recorded Investment	$ 437	$ 1,815
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| contract	0	0
Pre- Modification Outstanding Recorded Investment	$ 0	$ 0
Post- Modification Outstanding Recorded Investment	$ 0	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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