Segment and Geographic Information - Schedule of Revenue, Segment Gross Profit from External Customers, Certain Expenses and Long-Lived Assets, by Geographical Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 90.0	$ 66.1	$ 177.7	$ 129.5
Gross profit	35.7	27.0	72.0	53.8
Selling, general and administrative expenses	24.6	20.7	43.7	40.3
Depreciation and amortization expense	8.7	7.7	17.4	15.2
Other operating expense, net	1.3	0.7	2.1	1.0
Interest expense	6.0	5.5	11.6	11.7
Foreign currency (gain) loss	1.2	1.4	(2.4)	(0.1)
Loss before income tax benefit	(6.1)	(9.0)	(0.4)	(14.3)
Long-lived assets	124.8		124.8		$ 124.4
North America
Segment Reporting Information [Line Items]
Revenues	35.7	28.2	63.8	55.3
Gross profit	13.5	11.3	23.1	22.1
Long-lived assets	59.4		59.4		59.4
Europe/Asia
Segment Reporting Information [Line Items]
Revenues	54.3	37.9	113.9	74.2
Gross profit	22.2	$ 15.7	48.9	$ 31.7
Long-lived assets	$ 65.4		$ 65.4		$ 65.0