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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Effective Income Tax Rate Reconciliation [Line Items] |  |  |
Statutory federal income tax rate (as a percent) | 21.00% | 21.00% | 21.00%
Expected tax expense (benefit) at statutory rate | $ (1,156) | $ 12,921 | $ 15,640
State income taxes net of federal benefit | (514) | 652 | 2,719
Foreign taxes at rates other than statutory federal rate | (431) | (247) | 1,757
Employee benefits | 483 | 1,347 | 1,207
US benefit on foreign derived income | (259) | (686) | (477)
US Tax on foreign earnings | 379 | 757 | 1,257
Permanent items | 421 | 694 | 168
Valuation allowance | 181 | (1,109) | (787)
Federal tax credits | (1,002) | (1,384) | (1,539)
Other | (28) | 1,437 | 285
Tax audit adjustments | 0 | (819) | 2,523
Unremitted earnings | 397 | 501 | 720
Reversal of stranded tax effects from AOCI | 961 | (22) | 0
Interest income from tax refunds | (505) | 0 | 0
Non-deductible interest | 286 | 420 | 119
Transfer pricing adjustments | 600 | 0 | 0
Return to provision adjustment | (180) | 440 | 2,454
Income tax (benefit) expense | $ (367) | 14,902 | $ 26,046
Tax attributes written off |  | 1,142 |
Decrease in valuation allowance |  | 1,142 |
Montratec |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |
Non-deductible interest |  | $ 525 |

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