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v3.23.2

Segment Information (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Segment Information |
Summary of revenue and other financial information by reportable segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Contract |  | Aftermarket |  | ​ | ​
(in thousands) |  | Operations |  | Services |  | Total
Three months ended June 30, 2023 |  | ​ |  |  | ​ |  |  | ​ |
Revenue | ​ | $ | 201,120 | ​ | $ | 46,423 | ​ | $ | 247,543
Gross margin | ​ |  | 125,087 | ​ |  | 11,080 | ​ |  | 136,167
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three months ended June 30, 2022 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 166,298 | ​ | $ | 49,530 | ​ | $ | 215,828
Gross margin | ​ |  | 97,943 | ​ |  | 7,820 | ​ |  | 105,763
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Six months ended June 30, 2023 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 388,865 | ​ | $ | 88,512 | ​ | $ | 477,377
Gross margin | ​ |  | 233,350 | ​ |  | 19,261 | ​ |  | 252,611
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Six months ended June 30, 2022 | ​ |  |  | ​ |  |  | ​ |  |
Revenue | ​ | $ | 329,954 | ​ | $ | 83,075 | ​ | $ | 413,029
Gross margin | ​ |  | 197,098 | ​ |  | 12,727 | ​ |  | 209,825
Reconciliation of total gross margin to income before taxes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended |  | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
(in thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022
Total gross margin | ​ | $ | 136,167 | ​ | $ | 105,763 | ​ | $ | 252,611 | ​ | $ | 209,825
Less: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Selling, general and administrative | ​ |  | 28,649 | ​ |  | 27,691 | ​ |  | 55,074 | ​ |  | 55,464
Depreciation and amortization | ​ |  | 41,210 | ​ |  | 41,356 | ​ |  | 81,391 | ​ |  | 84,395
Long-lived and other asset impairment | ​ |  | 2,892 | ​ |  | 4,647 | ​ |  | 5,461 | ​ |  | 12,063
Restructuring charges | ​ | ​ | (85) | ​ | ​ | — | ​ | ​ | 962 | ​ | ​ | —
Interest expense | ​ |  | 28,630 | ​ |  | 24,456 | ​ |  | 55,211 | ​ |  | 49,702
Gain on sale of assets, net | ​ | ​ | (1,176) | ​ | ​ | (18,948) | ​ | ​ | (4,781) | ​ | ​ | (21,060)
Other expense (income), net | ​ |  | 1,463 | ​ |  | 497 | ​ |  | 2,066 | ​ |  | 533
Income before income taxes | ​ | $ | 34,584 | ​ | $ | 26,064 | ​ | $ | 57,227 | ​ | $ | 28,728

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