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Note 6 - Goodwill and Intangible Assets, Net - Other Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Mar. 31, 2024
Gross carrying amount $ 257,251 $ 251,072
Accumulated amortization (148,428) (137,320)
Net carrying amount 108,823 113,752
Customer Relationships [Member]    
Gross carrying amount 194,931 189,911
Accumulated amortization (113,003) (104,528)
Net carrying amount 81,928 85,383
Other Intangible Assets [Member]    
Gross carrying amount 62,320 61,161
Accumulated amortization (35,425) (32,792)
Net carrying amount $ 26,895 $ 28,369