SEGMENT AND RELATED INFORMATION - Financial Information by Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 638,849	$ 682,122	$ 700,805
Cost of services provided	487,761	532,667	530,287
Revenues less cost of sales and services	151,088	149,455	170,518
Selling, general and administrative expenses	75,342	73,350	72,605
Depreciation and amortization expense	72,618	68,038	75,142
Other operating expense (income)	(987)	6,735	(16,716)
Operating income	4,115	1,332	39,487
Other income (loss)	(10,571)	(7,269)	876
Income (loss) before income taxes	(6,456)	(5,937)	40,363
Capital expenditures	20,190	26,138	31,633
Australia
Segment Reporting Information [Line Items]
Revenues	460,295	426,956	336,763
Canada
Segment Reporting Information [Line Items]
Revenues	178,554	245,087	352,795
Operating segments | Australia
Segment Reporting Information [Line Items]
Revenues	460,295	426,956	336,763
Cost of services provided	339,457	315,374	243,011
Revenues less cost of sales and services	120,838	111,582	93,752
Selling, general and administrative expenses	32,422	30,255	24,146
Depreciation and amortization expense	36,891	31,044	28,696
Other operating expense (income)	(442)	6,302	16
Operating income	51,967	43,981	40,894
Capital expenditures	14,363	15,703	21,632
Operating segments | Canada
Segment Reporting Information [Line Items]
Revenues	178,554	245,087	352,795
Cost of services provided	147,991	207,135	277,067
Revenues less cost of sales and services	30,563	37,952	75,728
Selling, general and administrative expenses	18,061	21,951	24,686
Depreciation and amortization expense	35,623	36,704	46,319
Other operating expense (income)	(1,393)	(2,482)	(18,568)
Operating income	(21,728)	(18,221)	23,291
Capital expenditures	5,779	10,344	9,216
Corporate, other and eliminations | Corporate, other and eliminations
Segment Reporting Information [Line Items]
Revenues	0	10,079	11,247
Cost of services provided	313	10,158	10,209
Revenues less cost of sales and services	(313)	(79)	1,038
Selling, general and administrative expenses	24,859	21,144	23,773
Depreciation and amortization expense	104	290	127
Other operating expense (income)	848	2,915	1,836
Operating income	(26,124)	(24,428)	(24,698)
Capital expenditures	$ 48	$ 91	$ 785