HOTEL DISPOSITIONS - Summary of Total Revenues and Expenses (Details) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 CAD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 CAD ($)	Jun. 30, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total operating expenses	$ 223,207,000		$ 224,454,000	$ 436,950,000		$ 491,579,000
INCOME BEFORE INCOME TAX EXPENSE	70,856,000		79,977,000	105,383,000		116,869,000
Impairment of long-lived assets	$ 0		0	$ 0		43,600,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total room and other hotel revenues			16,107,000			34,807,000
Total operating expenses			12,481,000			66,095,000
INCOME BEFORE INCOME TAX EXPENSE			$ 3,626,000			$ (31,288,000)
Impairment of long-lived assets		$ 0.0			$ 37.4