ASSETS HELD FOR SALE AND DISPOSITIONS (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($) facility	Jun. 30, 2020 USD ($) facility	Aug. 04, 2021 USD ($)
Held for Sale | Senior housing communities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | facility	3
Net carrying value of assets and liabilities	$ 2,700
Dispositions | Senior housing communities | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Aggregate consideration			$ 4,000
Dispositions | Skilled nursing transitional care facility | 2021 Dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of facilities sold | facility	4
Net carrying value of assets and liabilities	$ 14,700
Aggregate consideration	11,300
Net gain (loss) on sale	(3,400)
Net income (loss) from facilities	$ (3,300)	$ 47
Dispositions | Skilled nursing transitional care facility | 2020 Dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of facilities sold | facility		6
Net carrying value of assets and liabilities		$ 24,200
Aggregate consideration		24,300
Net gain (loss) on sale		100
Net income (loss) from facilities		$ 400