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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Mar. 31, 2025
Accumulated Other Comprehensive Loss |
Schedule of components of accumulated other comprehensive loss | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | September 30,
​ |  | 2025 |  | 2024
​ | ​ | (Amounts in thousands)
Cumulative effect of foreign currency translation, net | ​ | $ | (4,364) | ​ | $ | (4,106)
Cumulative unrealized loss on pension liability | ​ |  | (1,259) | ​ |  | (1,259)
Accumulated other comprehensive loss, net | ​ | $ | (5,623) | ​ | $ | (5,365)

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