Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash Flows from Operating Activities
Net loss	$ (18.4)	$ (2.6)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	31.9	35.5
Amortization of deferred financing costs	0.6	1.4
Loss on disposal of property, plant, and equipment	0.2	0.6
Gain on sale of patents	0.0	(5.4)
Deferred income taxes	(1.8)	3.7
Amortization of initial value of interest rate swap	0.0	(1.2)
Foreign currency gain	(5.2)	(1.3)
Stock-based compensation expense	4.1	2.8
Provision for common stock warrants	2.0	0.0
Amortization of cloud-based software implementation costs	1.9	1.8
Unrealized (gain) loss on strategic investments	(5.8)	3.5
Changes in operating assets and liabilities:
Accounts receivable	1.2	(5.6)
Inventories	(15.0)	(8.8)
Income tax receivable	(4.0)	(6.6)
Prepaid expenses and other current assets	(4.6)	(2.6)
Accounts payable	5.2	9.5
Accrued liabilities and other	2.6	3.4
Change in other assets and liabilities	0.2	(3.3)
Net cash (used in) provided by operating activities	(4.9)	24.8
Cash Flows from Investing Activities
Purchases of converter equipment	(15.2)	(15.3)
Purchases of other property, plant, and equipment	(2.1)	(4.4)
Proceeds from sale of patents	0.0	5.4
Cash paid for strategic investments	(2.5)	(4.8)
Net cash used in investing activities	(19.8)	(19.1)
Cash Flows from Financing Activities
Principal payments on term loans	(2.1)	(0.8)
Proceeds from hedging instruments	0.3	0.0
Proceeds from equipment financing	0.0	0.7
Payments on equipment financing	(0.4)	(0.5)
Payments on finance lease liabilities	(1.5)	(0.6)
Tax payments for withholdings on stock-based awards distributed	(1.2)	(0.4)
Net cash used in financing activities	(4.9)	(1.6)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	2.7	(1.0)
Net (Decrease) Increase in Cash and Cash Equivalents	(26.9)	3.1
Cash and Cash Equivalents, beginning of period	76.1	62.0
Cash and Cash Equivalents, end of period	$ 49.2	$ 65.1