Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (36.7)	$ (32.4)	$ (41.1)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	47.0	52.3	42.0
Amortization of right of use asset	3.3	3.6	1.0
Stock-based compensation expense	13.0	4.8	9.0
Change in fair value of derivative liability			(3.0)
Change in fair value of earnout liability			2.3
Impairment of investment in equity method investee		0.7
Unrealized transactional currency gain/loss on senior bank debt	(4.6)	5.6	0.8
Unrealized transactional currency gain/loss on cross currency swaps			(3.6)
Change in fair value of warrant liability	(0.9)	3.2	4.1
Reclassification of loss on hedging instrument to comprehensive income	1.5	0.9
Non-cash interest expense relating to senior debt	17.2	3.4	9.0
Changes in assets and liabilities:
Accounts receivable	(4.9)	(2.9)	3.3
Inventory	1.6	1.3	2.0
Prepaid expenses and other assets	(13.9)	8.8	3.3
Corporate tax and other current taxes payable	(9.9)	6.6	(3.6)
Accounts payable	2.8	(4.8)	6.9
Deferred revenues and customer prepayment	(6.7)	(5.7)	(9.5)
Accrued expenses	0.7	10.9	7.2
Operating lease liabilities	(2.9)	(2.8)	(1.3)
Other long-term liabilities	(0.4)	(0.6)	1.9
Net cash provided by operating activities	6.2	52.9	30.7
Cash flows from investing activities:
Purchases of property and equipment	(11.6)	(15.4)	(10.5)
Acquisition of subsidiary company assets	(12.5)
Cash paid for NTG Acquisition			(105.9)
Software development expenditure	(13.8)	(14.5)	(17.0)
Net cash used in investing activities	(37.9)	(29.9)	(133.4)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	333.1		270.6
Proceeds from issuance of revolver			2.8
Proceeds from exercise of warrants	30.5
Repayments of revolver and long-term debt, including exit premium	(320.6)	(4.2)	(144.2)
Payment of financing costs			(15.2)
Payment of debt issuance costs	(9.1)	(3.1)
Payment in connection with terminated interest rate swaps	(2.1)
Principal payments under finance leases	(0.6)	(0.9)	(0.5)
Net cash provided by (used in) financing activities	31.2	(8.2)	113.5
Effect of exchange rate changes on cash	1.2	3.2	2.3
Net increase in cash	0.7	18.0	13.1
Cash, beginning of period	47.1	29.1	16.0
Cash, end of period	47.8	47.1	29.1
Supplemental cash flow disclosures
Cash paid during the period for interest	30.8	13.3	12.6
Cash paid during the period for income taxes	1.2	0.2
Cash paid during the period for operating leases	4.4	3.3	2.2
Supplemental disclosure of noncash investing and financing activities
Additional paid in capital from net settlement of RSUs	(6.4)	(0.7)	(0.9)
Lease liabilities arising from obtaining right of use assets		(6.8)	(9.6)
Adjustment to goodwill arising from adjustment to fair value of assets acquired		(0.2)
Property and equipment acquired through finance lease	2.6	1.5
Property and equipment transferred to inventory	1.3
Capitalized interest payments		10.6
Assets arising from asset retirement obligations		1.0
Additional paid in capital reclassified from derivative liability			$ 0.8