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Revenue from Contracts with Customers (Tables) | 6 Months Ended
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Jun. 30, 2025
Revenue from Contracts with Customers |
Schedule of revenue from contracts with customers by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
(in thousands) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Contract operations: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
0 ― 1,000 horsepower per unit | ​ | $ | 108,670 | ​ | $ | 45,334 | ​ | $ | 210,902 | ​ | $ | 90,661
1,001 ― 1,500 horsepower per unit | ​ |  | 106,354 | ​ |  | 94,687 | ​ |  | 207,956 | ​ |  | 190,357
Over 1,500 horsepower per unit | ​ |  | 103,155 | ​ |  | 85,290 | ​ |  | 199,571 | ​ |  | 167,155
Other (1) | ​ |  | 148 | ​ |  | 157 | ​ |  | 295 | ​ |  | 346
Total contract operations revenue (2) | ​ |  | 318,327 | ​ |  | 225,468 | ​ |  | 618,724 | ​ |  | 448,519
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Aftermarket services: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Services | ​ |  | 33,107 | ​ |  | 25,675 | ​ |  | 59,162 | ​ |  | 51,113
OTC parts and components sales | ​ |  | 29,846 | ​ |  | 19,383 | ​ |  | 50,557 | ​ |  | 39,382
Other | ​ | ​ | 1,872 | ​ | ​ | — | ​ | ​ | 1,872 | ​ | ​ | —
Total aftermarket services revenue (3) | ​ |  | 64,825 | ​ |  | 45,058 | ​ |  | 111,591 | ​ |  | 90,495
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total revenue | ​ | $ | 383,152 | ​ | $ | 270,526 | ​ | $ | 730,315 | ​ | $ | 539,014
(1) Primarily relates to fees associated with owned non-compression equipment. (2) Includes $1.8 million and $1.1 million for the three months ended June 30, 2025 and 2024, respectively, and $3.4 million and $2.2 million for the six months ended June 30, 2025 and 2024, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time. (3) Services revenue within aftermarket services is recognized over time. OTC parts and components sales revenue and other revenue is recognized at a point in time.
Schedule of remaining performance obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ |  | 2025 | ​ | 2026 | ​ | 2027 |  | 2028 |  | 2029 |  | 2030 |  | Total
Remaining performance obligations | ​ | ​ | $ | 339,921 | ​ | $ | 396,255 | ​ | $ | 130,694 | ​ | $ | 48,156 | ​ | $ | 16,058 | ​ | $ | 2,663 | ​ | $ | 933,747
Summary of changes in allowance for credit losses | ​
​ | ​ | ​ | ​
(in thousands) |  | ​ | ​
Balance at beginning of period |  | $ | 414
Provision for credit losses | ​ | ​ | 227
Write-offs charged against allowance | ​ | ​ | (25)
Balance at end of period | ​ | $ | 616

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