INCOME TAXES (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Contingency [Line Items]
Deferred tax assets, net	$ (38,376,000)		$ (38,376,000)		$ (39,677,000)
Income tax (expense) benefit	(704,000)	$ (459,000)	(905,000)	$ 13,103,000
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Income tax (expense) benefit			$ 500,000		$ (4,500,000)
Puerto Rico
Income Tax Contingency [Line Items]
Branch profit tax			10.00%
Puerto Rico | Montehiedra
Income Tax Contingency [Line Items]
Deferred tax assets, net		(13,100,000)		$ (13,100,000)
Puerto Rico | Commonwealth of Puerto Rico
Income Tax Contingency [Line Items]
Non-resident withholding tax percentage				29.00%
Income tax (expense) benefit	(700,000)	1,300,000	$ (1,400,000)	$ 14,800,000
Puerto Rico | State and Local Jurisdiction
Income Tax Contingency [Line Items]
Income tax (expense) benefit	$ 0	$ 0	$ 500,000
Puerto Rico | Minimum
Income Tax Contingency [Line Items]
State and local income taxes			18.50%
Puerto Rico | Maximum
Income Tax Contingency [Line Items]
State and local income taxes			37.50%