Property, Plant and Equipment, net - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation expense recorded	$ 2.0	$ 1.5
Rent received from leases	$ 0.2	$ 0.3	$ 0.4
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	25 years
Building and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	20 years
Building and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	25 years
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	8 years
Software Development
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years