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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contracts with Customers |
Schedule of revenue from contracts with customers by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
(in thousands) | ​ | 2023 |  | 2022 |  | 2021
Contract operations: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
0 ― 1,000 horsepower per unit | ​ | $ | 170,320 | ​ | $ | 159,140 | ​ | $ | 175,457
1,001 ― 1,500 horsepower per unit | ​ |  | 350,961 | ​ |  | 285,758 | ​ |  | 267,191
Over 1,500 horsepower per unit | ​ |  | 287,183 | ​ |  | 231,923 | ​ |  | 204,893
Other (1) | ​ |  | 975 | ​ |  | 980 | ​ |  | 770
Total contract operations revenue (2) | ​ |  | 809,439 | ​ |  | 677,801 | ​ |  | 648,311
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Aftermarket services: | ​ |  |  | ​ |  |  | ​ |  |
Services | ​ |  | 98,803 | ​ |  | 88,728 | ​ |  | 69,876
OTC parts and components sales | ​ |  | 82,095 | ​ |  | 79,039 | ​ |  | 63,274
Total aftermarket services revenue (3) | ​ |  | 180,898 | ​ |  | 167,767 | ​ |  | 133,150
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total revenue | ​ | $ | 990,337 | ​ | $ | 845,568 | ​ | $ | 781,461
(1) | Primarily relates to fees associated with owned non–compression equipment.
(2) | Includes $4.2 million, $3.2 million and $4.0 million during the years ended December 31, 2023, 2022 and 2021, 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 is recognized at a point in time.
Schedule of remaining performance obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | 2024 | ​ | 2025 |  | 2026 |  | 2027 |  | 2028 |  | Total
Remaining performance obligations | ​ | $ | 267,825 | ​ | $ | 114,456 | ​ | $ | 42,574 | ​ | $ | 10,082 | ​ | $ | 5,181 | ​ | $ | 440,118

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