Related Party Transactions - Additional Information (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Executive Officers, Directors and their Related Interests
Related Party Transaction [Line Items]
Loan commitments outstanding to related parties	$ 0	$ 800,000
Principal Officers, Directors and their Affiliates
Related Party Transaction [Line Items]
Deposits from related parties	$ 84,600,000	$ 52,100,000

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_RelatedPartyDepositLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant