Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total paper and other revenue	$ 78.6	$ 69.6	$ 223.9	$ 207.2
Machine lease revenue	13.6	13.2	40.0	38.7
Net revenue	92.2	82.8	263.9	245.9
Cost of goods sold	57.8	51.3	165.5	156.7
Gross profit	34.4	31.5	98.4	89.2
Selling, general and administrative expenses	28.8	20.9	84.0	64.4
Depreciation and amortization expense	8.2	8.1	24.9	24.2
Other operating expense, net	1.6	0.9	3.7	3.5
Income (loss) from operations	(4.2)	1.6	(14.2)	(2.9)
Interest expense	9.3	6.8	20.8	18.4
Foreign currency (gain) loss	0.2	(0.7)	(1.1)	0.2
Other non-operating income, net	(3.1)	(0.1)	(21.0)	(0.8)
Loss before income tax benefit	(10.6)	(4.4)	(12.9)	(20.7)
Income tax benefit	(2.5)	(1.1)	(2.2)	(2.9)
Net loss	$ (8.1)	$ (3.3)	$ (10.7)	$ (17.8)
Basic and diluted loss per share
Basic (in usd per share)	$ (0.10)	$ (0.04)	$ (0.13)	$ (0.22)
Diluted (in usd per share)	$ (0.10)	$ (0.04)	$ (0.13)	$ (0.22)
Weighted average number of shares outstanding – Class A and C – basic and diluted
Basic (in shares)	83,227,887	82,322,957	82,994,759	82,297,985
Diluted (in shares)	83,227,887	82,322,957	82,994,759	82,297,985
Other comprehensive income (loss), before tax
Foreign currency translation adjustments	$ 3.6	$ (1.9)	$ 1.4	$ (1.0)
Interest rate swap adjustments	0.0	(2.2)	(3.4)	(5.3)
Total other comprehensive income (loss), before tax	3.6	(4.1)	(2.0)	(6.3)
Provision (benefit) for income taxes related to other comprehensive income (loss)	(0.8)	0.1	(0.8)	(1.1)
Total other comprehensive income (loss), net of tax	4.4	(4.2)	(1.2)	(5.2)
Comprehensive loss, net of tax	$ (3.7)	$ (7.5)	$ (11.9)	$ (23.0)
Class A common stock
Basic and diluted loss per share
Basic (in usd per share)	$ (0.10)	$ (0.04)	$ (0.13)	$ (0.22)
Diluted (in usd per share)	$ (0.10)	$ (0.04)	$ (0.13)	$ (0.22)
Weighted average number of shares outstanding – Class A and C – basic and diluted
Basic (in shares)	80,306,788	79,401,858	80,073,660	79,376,886
Diluted (in shares)	80,306,788	79,401,858	80,073,660	79,376,886
Class C common stock
Basic and diluted loss per share
Basic (in usd per share)	$ (0.10)	$ (0.03)	$ (0.13)	$ (0.21)
Diluted (in usd per share)	$ (0.10)	$ (0.03)	$ (0.13)	$ (0.21)
Weighted average number of shares outstanding – Class A and C – basic and diluted
Basic (in shares)	2,921,099	2,921,099	2,921,099	2,921,099
Diluted (in shares)	2,921,099	2,921,099	2,921,099	2,921,099
Paper revenue
Total paper and other revenue	$ 71.3	$ 64.8	$ 205.0	$ 192.4
Other revenue
Total paper and other revenue	$ 7.3	$ 4.8	$ 18.9	$ 14.8