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SEGMENT REPORTING - Summary of Financial Information by Reportable Segment (Detail) - 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]          
Revenues $ 283,666 $ 215,875 $ 517,693 $ 405,406  
Depreciation and amortization 31,150 24,337 60,579 47,019  
Operating income (loss) 31,719 21,946 41,887 33,955  
Total assets 1,370,719 1,227,833 1,370,719 1,227,833 $ 1,283,580
Operating | Eastern          
Segment Reporting Information [Line Items]          
Revenues 87,263 61,058 158,582 113,403  
Depreciation and amortization 11,538 7,313 22,988 13,935  
Operating income (loss) 6,150 3,781 3,920 6,027  
Total assets 362,942 226,157 362,942 226,157  
Operating | Western          
Segment Reporting Information [Line Items]          
Revenues 114,884 98,852 210,723 184,616  
Depreciation and amortization 15,939 15,089 30,598 29,128  
Operating income (loss) 19,897 14,900 29,160 22,657  
Total assets 697,252 654,314 697,252 654,314  
Operating | Resource Solutions          
Segment Reporting Information [Line Items]          
Revenues 81,519 55,965 148,388 107,387  
Depreciation and amortization 3,110 1,548 5,872 3,116  
Operating income (loss) 6,235 3,651 9,928 6,113  
Total assets 189,820 95,664 189,820 95,664  
Corporate entities          
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Depreciation and amortization 563 387 1,121 840  
Operating income (loss) (563) (386) (1,121) (842)  
Total assets 120,705 251,698 120,705 251,698  
Inter-company revenues          
Segment Reporting Information [Line Items]          
Revenues (61,955) (50,971) (111,893) (93,982)  
Inter-company revenues | Eastern          
Segment Reporting Information [Line Items]          
Revenues (22,147) (16,128) (38,815) (28,554)  
Inter-company revenues | Western          
Segment Reporting Information [Line Items]          
Revenues (39,491) (33,566) (71,983) (62,248)  
Inter-company revenues | Resource Solutions          
Segment Reporting Information [Line Items]          
Revenues $ (317) $ (1,277) $ (1,095) $ (3,180)