Organization and Summary of Significant Accounting Policies - Organization (Details) $ in Millions	Jun. 30, 2020 USD ($)
Organization and Summary of Significant Accounting Policies
Assets of Wholly Owned Real Estate Investment Subsidiaries	$ 751

For banks, amount of real estate assets held by entities that are wholly-owned.

No definition available.

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