PROPERTIES AND INVESTMENTS - Assets Sold or Held for Sale (Narrative) (Detail 2) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Facility	Mar. 31, 2016 USD ($)
Real Estate [Abstract]
Number of facilities sold	15
Total cash proceeds | $	$ 45,800
Amount of gain (loss) from sale of facilities | $	$ 7,400
Number of previously classified as held for sale	11
Provision for impairment on real estate properties | $	$ 7,638	$ 34,558
Number of facilities with impairment charges	3
Number of facilities with impairment charges classified as held for sale	1