Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income (loss)	$ (78,298)	$ (56,877)	$ 52,415
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of intangible assets	84,153	97,290	114,400
Non-cash operating lease expense	17,107	18,178	18,958
Stock-based compensation	23,618	25,053	26,960
Amortization of prepaid debt fees	18,253	4,130	5,631
Deferred taxes, net	(85,574)	(12,939)	(192)
Loss on sale of business	64,289	59,817	0
Loss on extinguishment of debt, net	(10,000)	0	0
Restructuring, non-cash	8,744	5,888	(1,785)
Other adjustments, net	2,930	10,392	(4,295)
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable	60,242	108,256	(39,467)
Inventories	(3,721)	35,403	(9,389)
Other current assets	41,461	(11,832)	(31,128)
Other long-term assets	4,515	(11,391)	7,053
Accounts payable, other current liabilities, and taxes payable	(23,391)	(111,724)	9,177
Wages and benefits payable	30,915	(34,664)	30,835
Unearned revenue	(29,366)	8,212	8,905
Warranty	(8,169)	(13,538)	(6,637)
Other operating, net	17,086	(10,140)	(8,601)
Net cash provided by operating activities	154,794	109,514	172,840
Investing activities
Net proceeds related to the sale of business	3,142	1,133	0
Acquisitions of property, plant, and equipment	(34,682)	(46,208)	(60,749)
Business acquisitions, net of cash and cash equivalents acquired	(8,670)	0	0
Other investing, net	5,326	4,039	12,569
Net cash used in investing activities	(34,884)	(41,036)	(48,180)
Financing activities
Proceeds from borrowings	460,000	400,000	50,000
Payments on debt	(946,094)	(414,063)	(137,657)
Issuance of common stock	5,080	8,886	24,390
Proceeds from common stock offering	389,419	0	0
Proceeds from sale of warrants	45,349	0	0
Purchases of convertible note hedge contracts	(84,139)	0	0
Repurchase of common stock	8,028	0	25,000
Prepaid debt fees	(12,031)	(1,571)	(1,560)
Other financing, net	(2,443)	(4,828)	(7,692)
Net cash used in financing activities	(152,887)	(11,576)	(97,519)
Less: Cash classified within assets held for sale	9,750	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	(1,627)	127	435
Increase (decrease) in cash and cash equivalents	(44,354)	57,029	27,576
Cash and cash equivalents at beginning of period	206,933	149,904	122,328
Cash and cash equivalents at end of period	162,579	206,933	149,904
Supplemental disclosure of cash flow information:
Income taxes, net	7,073	2,688	12,041
Interest	8,983	47,241	44,788
Deferred tax on purchase of convertible note hedge contracts	$ 20,563	$ 0	$ 0