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Revenue from Contracts with Customers (Tables) | 9 Months Ended
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Sep. 30, 2024
Revenue from Contracts with Customers |
Schedule of revenue from contracts with customers by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
(in thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Contract operations: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
0 ― 1,000 horsepower per unit | ​ | $ | 60,589 | ​ | $ | 43,142 | ​ | $ | 151,250 | ​ | $ | 126,272
1,001 ― 1,500 horsepower per unit | ​ |  | 96,160 | ​ |  | 90,016 | ​ |  | 286,517 | ​ |  | 259,830
Over 1,500 horsepower per unit | ​ |  | 88,529 | ​ |  | 74,140 | ​ |  | 255,684 | ​ |  | 209,526
Other (1) | ​ |  | 142 | ​ |  | 254 | ​ |  | 488 | ​ |  | 789
Total contract operations revenue (2) | ​ |  | 245,420 | ​ |  | 207,552 | ​ |  | 693,939 | ​ |  | 596,417
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Aftermarket services: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Services | ​ |  | 27,396 | ​ |  | 24,860 | ​ |  | 78,509 | ​ |  | 70,676
OTC parts and components sales | ​ |  | 19,029 | ​ |  | 20,955 | ​ |  | 58,411 | ​ |  | 63,651
Other | ​ | ​ | 316 | ​ | ​ | — | ​ | ​ | 316 | ​ | ​ | —
Total aftermarket services revenue (3) | ​ |  | 46,741 | ​ |  | 45,815 | ​ |  | 137,236 | ​ |  | 134,327
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total revenue | ​ | $ | 292,161 | ​ | $ | 253,367 | ​ | $ | 831,175 | ​ | $ | 730,744
(1) Primarily relates to fees associated with owned non-compression equipment. (2) Includes $1.5 million and $1.0 million for the three months ended September 30, 2024 and 2023, respectively, and $3.8 million and $2.9 million for the nine months ended September 30, 2024 and 2023, 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) | ​ |  | 2024 | ​ | 2025 | ​ | 2026 |  | 2027 |  | 2028 |  | 2029 |  | Total
Remaining performance obligations | ​ | ​ | $ | 175,887 | ​ | $ | 387,950 | ​ | $ | 208,119 | ​ | $ | 41,617 | ​ | $ | 12,350 | ​ | $ | 2,403 | ​ | $ | 828,326
Summary of changes in allowance for credit losses | ​
​ | ​ | ​ | ​
(in thousands) |  | ​ | ​
Balance at beginning of period |  | $ | 587
Provision for credit losses | ​ | ​ | 95
Write-offs charged against allowance | ​ | ​ | (44)
Balance at end of period | ​ | $ | 638

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