Other Real Estate Owned - Summary of Number and Carrying Values of Properties in Other Real Estate Owned (Detail) $ in Thousands	Mar. 31, 2021 USD ($) Property	Dec. 31, 2020 USD ($) Property
Other Real Estate Owned [Line Items]
Number of Properties	8	1
Carrying Value \| $	$ 594	$ 0
Residential
Other Real Estate Owned [Line Items]
Number of Properties	1	1
Land
Other Real Estate Owned [Line Items]
Number of Properties	6
Carrying Value \| $	$ 420
Commercial Properties
Other Real Estate Owned [Line Items]
Number of Properties	1
Carrying Value \| $	$ 174

Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Name:	us-gaap_OtherRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant