SEGMENT AND RELATED INFORMATION - Financial Information by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 184,954	$ 154,176	$ 350,632	$ 279,606
Depreciation and amortization	23,083	21,377	43,210	42,646
Operating income (loss)	14,242	2,129	18,479	(7,772)
Capital expenditures	5,055	3,158	8,647	6,530
Total assets	637,397	717,687	637,397	717,687	$ 672,734
Canada
Segment Reporting Information [Line Items]
Total revenues	109,023	83,281	204,975	145,166
Australia
Segment Reporting Information [Line Items]
Total revenues	67,820	64,019	131,349	123,656
U.S.
Segment Reporting Information [Line Items]
Total revenues	8,111	6,876	14,308	10,784
Operating segments | Canada
Segment Reporting Information [Line Items]
Total revenues	109,023	83,281	204,975	145,166
Depreciation and amortization	14,998	12,152	26,595	24,239
Operating income (loss)	11,197	7,452	15,235	(207)
Capital expenditures	1,847	1,143	3,853	2,323
Total assets	753,303	763,763	753,303	763,763
Operating segments | Australia
Segment Reporting Information [Line Items]
Total revenues	67,820	64,019	131,349	123,656
Depreciation and amortization	7,728	8,512	15,685	16,971
Operating income (loss)	5,452	(2,656)	11,587	651
Capital expenditures	2,832	1,147	4,048	2,701
Total assets	204,086	242,730	204,086	242,730
Operating segments | U.S.
Segment Reporting Information [Line Items]
Total revenues	8,111	6,876	14,308	10,784
Depreciation and amortization	395	542	777	1,108
Operating income (loss)	(1,295)	(1,109)	(2,904)	(3,707)
Capital expenditures	376	482	724	851
Total assets	26,165	27,793	26,165	27,793
Corporate and eliminations
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Depreciation and amortization	(38)	171	153	328
Operating income (loss)	(1,112)	(1,558)	(5,439)	(4,509)
Capital expenditures	0	386	22	655
Total assets	$ (346,157)	$ (316,599)	$ (346,157)	$ (316,599)