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Contract Advances (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jul. 31, 2024 | Jul. 31, 2023
Contract Advances |  |
Opening Balance | $ 104 | $ 1,627
Increases to contract liability | 473 | 271
Decreases to contract liability | (212) | (1,672)
Closing Balance | $ 365 | $ 226

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