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Note 13 - Segment Information - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2024
Net sales | [1] | $ 1,659,675 | $ 1,578,887 | $ 1,458,603
Percentage of revenue |  | 100.00% | 100.00% | 100.00%
UNITED STATES |  |  |  |
Net sales |  | $ 1,583,797 | $ 1,492,266 | $ 1,374,774
Percentage of revenue |  | 95.40% | 94.50% | 94.30%
Non-US [Member] |  |  |  |
Net sales |  | $ 75,878 | $ 86,621 | $ 83,829
Percentage of revenue |  | 4.60% | 5.50% | 5.70%
[1] | Information received by the CODM as part of net sales includes trade promotion costs representing amounts paid to customers for shelf space, to obtain favorable display positions, and to offer temporary price reductions for the sale of the Company's products to consumers.

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