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Derivative Financial Instruments - (Derivatives Designated as Cash Flow Hedges) (Details) - Derivatives Designated as Cash Flow Hedges - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 03, 2021
Dec. 31, 2019
Jan. 03, 2021
Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]        
Pretax Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion) $ 4,225 $ (2,894) $ 539 $ (3,697)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion) 662 1,570 (8,017) (882)
Lead forward contracts | Cost of Sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Pretax Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion) 4,843 (3,199) 1,350 (4,167)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion) 998 1,034 (7,655) (1,698)
Foreign currency forward contracts | Cost of Sales        
Derivative Instruments, Gain (Loss) [Line Items]        
Pretax Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion) (618) 305 (811) 470
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion) $ (336) $ 536 $ (362) $ 816