PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Asset retired	$ 14,900,000	$ 4,400,000	$ 9,200,000
Asset retired accumulated depreciation	13,700,000	4,200,000	7,300,000
Property and equipment, gross	759,544,000	1,069,831,000
Accumulated depreciation	544,433,000	585,525,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Impairment charges		0
Property and equipment, gross	372,492,000	$ 414,212,000
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment | Leasehold improvements
Property, Plant and Equipment [Line Items]
Impairment charges	4,500,000		500,000
Property and equipment, gross	37,100,000		22,400,000
Accumulated depreciation	$ 32,600,000		$ 21,900,000