Real Estate Investments - Additional Information (Details) $ in Millions	Mar. 31, 2019 USD ($) real_estate_property
Real Estate [Abstract]
Value of real estate property investments and mortgages \| $	$ 478.4
Number of real estate properties \| real_estate_property	105

The number of real estate properties owned as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant