Annual report pursuant to Section 13 and 15(d)

Inventories - Narrative (Details)

v3.20.4
Inventories - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Reserve for inventory valuation $ 33.4 $ 33.6
Percentage of reserve for inventory valuation 17.50% 18.70%