Foreclosed Assets - Additional Information (Detail) - USD ($)	Dec. 31, 2019	Jun. 30, 2019
Loans Member [Member]
Financing Receivable, Impaired [Line Items]
Foreclosure Assets In Process	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration