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Employee Compensation and Benefits (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Retirement Benefits [Abstract] |  |  |  |
Net actuarial loss / (gain) | $ (14) | $ (86) | $ 100 | $ (51)
Amortization of net actuarial (gain) | (21) | (15) | (64) | (47)
Deferred tax expense / (benefit) | 9 | 25 | (9) | 25
Unrecognized actuarial loss / (gain) on employee benefit plan obligations | $ (26) | $ (76) | $ 27 | $ (73)

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