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Leases Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2019
Sep. 30, 2019
Jan. 01, 2019
Lessee, Lease, Description [Line Items]          
Lessee, Operating Lease, Lease Not Yet Commenced, Amount       $ 27.5  
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract       15 years  
Rent expense $ 12.4 $ 7.6      
Accounting Standards Update 2016-02          
Lessee, Lease, Description [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         $ 0.1
Accounting Standards Update 2016-02 | Retained (deficit) earnings          
Lessee, Lease, Description [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         $ 0.1
Minimum | Equipment          
Lessee, Lease, Description [Line Items]          
Lessee, Finance Lease, Term of Contract     12 months    
Lessee, Operating Lease, Term of Contract     3 years    
Minimum | Manufacturing Facility          
Lessee, Lease, Description [Line Items]          
Lessee, Operating Lease, Term of Contract     2 years    
Maximum | Equipment          
Lessee, Lease, Description [Line Items]          
Lessee, Finance Lease, Term of Contract     7 years    
Lessee, Operating Lease, Term of Contract     7 years    
Maximum | Manufacturing Facility          
Lessee, Lease, Description [Line Items]          
Lessee, Operating Lease, Term of Contract     20 years