Leases - Narrative (Details) $ in Thousands	Sep. 30, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease liabilities | $	$ 2,194
Operating lease, right of use assets | $	$ 2,099	$ 3,213
Grapevine, Texas
Lessee, Lease, Description [Line Items]
Facility sqft.	51,000
Hackensack, New Jersey
Lessee, Lease, Description [Line Items]
Facility sqft.	4,100
Lease facility one | Wixom, Michigan
Lessee, Lease, Description [Line Items]
Facility sqft.	51,000
Lease facility one | Greer, South Carolina
Lessee, Lease, Description [Line Items]
Facility sqft.	57,000
Lease facility two | Wixom, Michigan
Lessee, Lease, Description [Line Items]
Facility sqft.	17,500
Lease facility two | Greer, South Carolina
Lessee, Lease, Description [Line Items]
Facility sqft.	1,408
Maximum
Lessee, Lease, Description [Line Items]
Lease term	5 years