DIRECT FINANCING LEASES (Schedule of investment in the direct financing leases by operator) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Investments in direct financing leases - net	$ 11,488	$ 132,262
Orianna
Lessee, Lease, Description [Line Items]
Investments in direct financing leases - net		120,545
Sun Mar Healthcare [Member]
Lessee, Lease, Description [Line Items]
Investments in direct financing leases - net	$ 11,488	11,491
Markleysburg Healthcare Investors, LP [Member]
Lessee, Lease, Description [Line Items]
Investments in direct financing leases - net		$ 226