Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.20.4
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
12 Months Ended
Jan. 01, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]          
Capitalized contract cost   $ 1,100,000      
Lease assets obtained in exchange for new operating lease liabilities   6,900,000 $ 10,100,000    
Cumulative effect adjustment   (222,600,000) (268,300,000) $ (391,000,000.0) $ (550,000,000.0)
Prepaid expenses and other current assets   12,900,000 10,700,000    
Retained Earnings (Accumulated Deficit)          
Property, Plant and Equipment [Line Items]          
Cumulative effect adjustment   $ 308,400,000 244,800,000 $ 186,300,000 31,800,000
Cumulative Effect, Period of Adoption, Adjustment          
Property, Plant and Equipment [Line Items]          
Lease assets obtained in exchange for new operating lease liabilities     $ 9,200,000    
Cumulative effect adjustment         4,100,000
Prepaid expenses and other current assets         400,000
Decrease in accounts receivable $ (4,500,000)        
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Accumulated Deficit)          
Property, Plant and Equipment [Line Items]          
Cumulative effect adjustment         $ 4,100,000
Minimum | Manufacturing equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   3 years      
Minimum | Computer equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   3 years      
Minimum | Office furniture and equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   5 years      
Minimum | Tooling and engraving equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   3 years      
Minimum | Heavy production equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   10 years      
Minimum | Buildings          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   15 years      
Minimum | Computer software          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   3 years      
Maximum | Manufacturing equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   15 years      
Maximum | Computer equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   5 years      
Maximum | Office furniture and equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   7 years      
Maximum | Tooling and engraving equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   7 years      
Maximum | Heavy production equipment          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   15 years      
Maximum | Buildings          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   30 years      
Maximum | Computer software          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of property, plant, and equipment   7 years      
Contractual Rights | Minimum          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of finite-lived intangible assets   5 years      
Intellectual Property | Minimum          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of finite-lived intangible assets   2 years      
Intellectual Property | Maximum          
Property, Plant and Equipment [Line Items]          
Estimated useful lives of finite-lived intangible assets   15 years