Allowance for Credit Losses on Loans - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Allowance for Credit Losses on Loans
Recorded investment of troubled debt restructurings	$ 1,015	$ 1,039
Troubled debt restructurings, nonaccrual loans	573	590
Troubled debt restructurings, accruing loans	442	449
Specific reserves	$ 12	$ 20

Amount of financing receivable modified as troubled debt restructuring.

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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