INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule of Income Taxes [Line Items]
Income tax benefit (expense)	$ 492	$ (122)	$ (584)	$ 8,689
Income tax benefit, percent of pretax loss	102.10%	1.80%	(6.60%)	5.90%
Deferred income tax benefit			$ (416)	$ 8,941
Canada
Schedule of Income Taxes [Line Items]
Deferred income tax benefit				9,600
Valuation allowance				$ 700
Minimum
Schedule of Income Taxes [Line Items]
Statutory tax rate, Canada, Australia and the U.S.	21.00%		21.00%
Maximum
Schedule of Income Taxes [Line Items]
Statutory tax rate, Canada, Australia and the U.S.	30.00%		30.00%