Real Estate and Lending Activities - Leasing Operations (Lessor) - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($) Property Lease
Lessor Lease Description [Line Items]
Lease renewal term	5 years
Annual rent escalations	97.00%
Number of properties | Property	5
Carrying value of lease requiring residual value guarantee | $	$ 216.3
Ernest [Member]
Lessor Lease Description [Line Items]
Number of direct financing leases	14
Prime Facilities [Member]
Lessor Lease Description [Line Items]
Number of direct financing leases	10
Prospect [Member]
Lessor Lease Description [Line Items]
Number of financing leases	13
Minimum [Member]
Lessor Lease Description [Line Items]
Term of lease	10 years
Fixed minimum annual escalations	0.50%
Maximum [Member]
Lessor Lease Description [Line Items]
Term of lease	20 years
Fixed minimum annual escalations	3.00%