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Note 10 - Retirement Plans - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jul. 02, 2022
Jul. 03, 2021
Service cost including administration $ 2,435 $ 2,560
Interest cost 2,374 1,878
Expected return on plan assets (4,025) (4,276)
Amortization of prior service cost 23 23
Amortization of net loss 102 0
Net periodic benefit cost $ 909 $ 185