Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 41.5	$ 15.6	$ 64.3	$ 67.9
Cost of sales, excluding depreciation and amortization:
Cost of service	(8.0)	(2.5)	(10.1)	(11.0)
Cost of product sales	(2.7)	(0.3)	(5.9)	(6.5)
Selling, general and administrative expenses	(28.5)	(12.2)	(43.7)	(41.2)
Acquisition and integration related transaction expenses	(0.1)	(1.2)	(1.5)	(4.4)
Depreciation and amortization	(11.9)	(13.3)	(25.0)	(25.9)
Net operating loss	(9.7)	(13.9)	(21.9)	(21.1)
Other (expense) income
Interest income	0.1	0.1	0.1	0.4
Interest expense	(22.2)	(8.1)	(30.8)	(14.2)
Change in fair value of warrant liability	(10.5)	(1.7)	(13.5)	5.9
Loss from equity method investee				(0.5)
Other finance (expense) income	(1.2)	(2.5)	5.2	(6.2)
Total other expense, net	(33.8)	(12.2)	(39.0)	(14.6)
Loss before income taxes	(43.5)	(26.1)	(60.9)	(35.7)
Income tax (expense) benefit	(0.3)	(0.1)	0.4	(0.3)
Net loss	(43.8)	(26.2)	(60.5)	(36.0)
Other comprehensive (loss)/income:
Foreign currency translation gain (loss)	0.1	0.4	(1.0)	3.5
Change in fair value of hedging instrument	(0.3)	(0.8)	0.3	(2.3)
Reclassification of loss on hedging instrument to comprehensive income	0.5	0.3	1.0	0.7
Actuarial gains (losses) on pension plan	0.9	(8.7)	5.5	(4.3)
Other comprehensive income (loss)	1.2	(8.8)	5.8	(2.4)
Comprehensive loss	$ (42.6)	$ (35.0)	$ (54.7)	$ (38.4)
Net loss per common share – basic and diluted	$ (1.94)	$ (1.15)	$ (2.68)	$ (1.61)
Weighted average number of shares outstanding during the period – basic and diluted	22,594,207	22,400,107	22,589,461	22,392,218
Stock-based compensation included in:
Selling, general and administrative expenses	$ (3.4)	$ (1.0)	$ (4.8)	$ (2.0)
Service [Member]
Revenue:
Total revenue	37.5	15.3	54.6	58.1
Product Sales [Member]
Revenue:
Total revenue	$ 4.0	$ 0.3	$ 9.7	$ 9.8