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SEGMENT REPORTING - Summary of Financial Information by Reportable Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,085,089 | $ 889,211 | $ 774,584
Depreciation and amortization | 126,351 | 103,590 | 90,782
Operating income (loss) | 95,394 | 77,660 | 59,297
Interest expense, net | 23,013 | 20,927 | 22,068
Capital expenditures | 130,960 | 123,295 | 108,108
Goodwill | 274,458 | 232,860 | 194,901
Total assets | 1,449,215 | 1,283,580 | 1,193,898
Eastern |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 52,406 | 52,072 | 30,873
Western |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 183,286 | 163,728 | 149,984
Resource Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 38,766 | 17,060 | 14,044
Operating Segments | Eastern |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 340,058 | 264,569 | 220,285
Depreciation and amortization | 47,673 | 33,572 | 25,669
Operating income (loss) | 16,559 | 12,937 | 11,635
Interest expense, net | 565 | 456 | 275
Capital expenditures | 38,501 | 31,489 | 29,292
Goodwill | 52,406 | 52,072 | 30,873
Total assets | 372,895 | 357,446 | 223,492
Operating Segments | Western |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 445,153 | 389,520 | 357,989
Depreciation and amortization | 64,116 | 61,055 | 56,457
Operating income (loss) | 65,453 | 49,035 | 42,688
Interest expense, net | 508 | 159 | 141
Capital expenditures | 65,190 | 72,892 | 71,989
Goodwill | 183,286 | 163,728 | 149,984
Total assets | 737,658 | 688,826 | 642,003
Operating Segments | Resource Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 299,878 | 235,122 | 196,310
Depreciation and amortization | 12,082 | 7,060 | 6,279
Operating income (loss) | 15,862 | 17,591 | 7,357
Interest expense, net | 146 | 168 | 201
Capital expenditures | 15,172 | 12,094 | 2,477
Goodwill | 38,766 | 17,060 | 14,044
Total assets | 191,118 | 127,304 | 88,512
Inter-company revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (239,951) | (202,298) | (180,435)
Inter-company revenue | Eastern |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (83,201) | (66,126) | (53,102)
Inter-company revenue | Western |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (151,016) | (132,914) | (116,658)
Inter-company revenue | Resource Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (5,734) | (3,258) | (10,675)
Corporate Entities |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Depreciation and amortization | 2,480 | 1,903 | 2,377
Operating income (loss) | (2,480) | (1,903) | (2,383)
Interest expense, net | 21,794 | 20,144 | 21,451
Capital expenditures | 12,097 | 6,820 | 4,350
Goodwill | 0 | 0 | 0
Total assets | $ 147,544 | $ 110,004 | $ 239,891

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