Annual report pursuant to Section 13 and 15(d)

Leases - Narrative (Details)

v3.20.1
Leases - Narrative (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]      
Operating lease, expense   $ 1,300,000 $ 1,200,000
Finance lease, right-of-use asset, net   300,000  
Rental income $ 0 $ 700,000 $ 0
Minimum      
Lessee, Lease, Description [Line Items]      
Finance lease, term   3 years  
Maximum      
Lessee, Lease, Description [Line Items]      
Finance lease, term   5 years  
Building | Minimum      
Lessee, Lease, Description [Line Items]      
Operating lease, term   3 years  
Building | Maximum      
Lessee, Lease, Description [Line Items]      
Operating lease, term   7 years  
Equipment | Minimum      
Lessee, Lease, Description [Line Items]      
Operating lease, term   0 years  
Equipment | Maximum      
Lessee, Lease, Description [Line Items]      
Operating lease, term   7 years