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INVENTORIES, NET (Tables)
6 Months Ended
Mar. 26, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current Interim LIFO determinations, including those at March 26, 2021, are based on management's estimates of future inventory levels and costs for the remainder of the current fiscal year.
(in thousands)March 26, 2021September 30, 2020
Purchased materials and manufactured parts, net$58,536 $49,192 
Work in process, net27,713 24,113 
Finished goods, net151,643 125,790 
Inventories, net$237,892 $199,095