DIRECT FINANCING LEASES (Narrative 1) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Capital Leased Assets [Line Items]
Investment in direct financing leases - net	$ 132,262	$ 364,965
Orianna
Capital Leased Assets [Line Items]
Investment in direct financing leases - net	120,545	337,705
Reliance Health Care Management, Inc [Member]
Capital Leased Assets [Line Items]
Investment in direct financing leases - net		15,458
Sun Mar Healthcare [Member]
Capital Leased Assets [Line Items]
Investment in direct financing leases - net	11,491	11,481
Markleysburg Healthcare Investors, LP [Member]
Capital Leased Assets [Line Items]
Investment in direct financing leases - net	$ 226	$ 321