Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net loss	$ (35,969)	$ (18,865)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization of intangible assets	33,251	42,919
Non-cash operating lease expense	8,234	8,647
Stock-based compensation	12,532	12,586
Amortization of prepaid debt fees	1,720	4,315
Deferred taxes, net	(4,061)	(2,942)
Loss on sale of business	2,415	26,103
Loss on extinguishment of debt, net	0	10,000
Goodwill impairment	38,480	0
Restructuring, non-cash	(817)	878
Other adjustments, net	194	13,913
Changes in operating assets and liabilities, net of acquisition and sale of business:
Accounts receivable	28,924	29,549
Inventories	(13,592)	70
Other current assets	(10,688)	22,164
Other long-term assets	(3,134)	6,207
Accounts payable, other current liabilities, and taxes payable	(24,604)	(43,115)
Wages and benefits payable	(22,264)	17,815
Unearned revenue	36,093	17,106
Warranty	(2,501)	(4,744)
Other operating, net	(21,557)	(19,926)
Net cash provided by operating activities	22,656	122,680
Investing activities
Proceeds from divestiture of businesses	55,933	3,142
Acquisitions of property, plant, and equipment	(10,663)	(20,476)
Business acquisitions, net of cash and cash equivalents acquired	23	0
Other investing, net	1,722	2,819
Net cash provided by (used in) investing activities	47,015	(14,515)
Financing activities
Proceeds from borrowings	0	460,000
Payments on debt	0	(915,000)
Issuance of common stock	1,797	3,255
Proceeds from common stock offering	0	389,419
Proceeds from sale of warrants	0	45,349
Purchases of convertible note hedge contracts	0	(84,139)
Repurchase of common stock	(16,972)	0
Prepaid debt fees	(695)	(12,021)
Other financing, net	(4,206)	4,993
Net cash used in financing activities	(20,076)	(108,144)
Effect of foreign exchange rate changes on cash and cash equivalents	(3,674)	177
Increase in cash and cash equivalents	45,921	198
Cash and cash equivalents at beginning of period	162,579	206,933
Cash and cash equivalents at end of period	208,500	207,131
Supplemental disclosure of cash flow information:
Income taxes, net	7,062	3,033
Interest	$ 717	$ 7,845