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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Significant Accounting Policies |
Schedule of carrying amount of goodwill by reportable segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Years Ended December 31, |  | 2024 |  | 2023
(in thousands) | ​ |  | ​ | ​ |  | ​
Technical Services | ​ | $ | 49,666 | ​ | $ | 49,666
Support Services | ​ |  | 1,158 | ​ |  | 1,158
Goodwill | ​ | $ | 50,824 | ​ | $ | 50,824
Schedule of reconciliation of weighted average shares outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2024 |  | 2023 |  | 2022
(in thousands) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available for stockholders | ​ | $ | 91,444 | ​ | $ | 195,113 | ​ | $ | 218,363
Less: Adjustments for earnings attributable to participating securities | ​ | ​ | (1,547) | ​ | ​ | (3,099) | ​ | ​ | (3,197)
Net income used in calculating earnings per share | ​ | $ | 89,897 | ​ | $ | 192,014 | ​ | $ | 215,166
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares outstanding (including participating securities) | ​ |  | 214,942 | ​ |  | 216,472 | ​ |  | 216,518
Adjustment for participating securities | ​ |  | (3,584) | ​ |  | (3,545) | ​ |  | (3,187)
Shares used in calculating basic and diluted earnings per share | ​ |  | 211,358 | ​ |  | 212,927 | ​ |  | 213,331

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