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Inventories, net (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories
March 31,
2021
December 31,
2020
(In thousands)
Finished goods and parts$89,242 $81,619 
Work in process119,865 102,945 
Raw materials and purchased parts395,214 374,607 
Total inventories, net$604,321 $559,171