Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities
Net income (loss)	$ 52,415	$ (96,581)	$ 60,249
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of intangible assets	114,400	122,497	63,215
Non-cash operating lease expense	18,958	0	0
Stock-based compensation	26,960	31,263	21,407
Amortization of prepaid debt fees	5,631	7,046	1,067
Deferred taxes, net	(192)	(19,130)	50,667
Restructuring, non-cash	(1,785)	859	(2,297)
Other adjustments, net	(4,295)	1,452	3,673
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable	(39,467)	15,524	(17,573)
Inventories	(9,389)	(25,613)	(16,242)
Other current assets	(31,128)	(23,589)	8,112
Other long-term assets	7,053	3,020	11,230
Accounts payables, other current liabilities, and taxes payable	9,177	20,101	78,463
Wages and benefits payable	30,835	(9,565)	1,926
Unearned revenue	8,905	27,584	(41,309)
Warranty	(6,637)	20,815	(10,554)
Other operating, net	(8,601)	34,072	(20,680)
Net cash provided by operating activities	172,840	109,755	191,354
Investing activities
Acquisitions of property, plant, and equipment	(60,749)	(59,952)	(49,495)
Business acquisitions, net of cash equivalents acquired	0	(803,075)	(99,386)
Other investing, net	12,569	369	702
Net cash used in investing activities	(48,180)	(862,658)	(148,179)
Financing activities
Proceeds from borrowings	50,000	778,938	335,000
Payments on debt	(137,657)	(363,359)	(29,063)
Issuance of common stock	24,390	9,171	3,609
Prepaid debt fees	(1,560)	(24,042)	0
Repurchase of common stock	25,000	0	0
Other financing, net	(7,692)	(4,887)	(7,587)
Net cash provided by (used in) financing activities	(97,519)	395,821	301,959
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	435	(7,925)	8,636
Increase (decrease) in cash, cash equivalents, and restricted cash	27,576	(365,007)	353,770
Cash, cash equivalents, and restricted cash at beginning of period	122,328	487,335	133,565
Cash, cash equivalents, and restricted cash at end of period	149,904	122,328	487,335
Supplemental disclosure of cash flow information:
Income taxes, net	12,041	13,771	28,969
Interest	$ 44,788	$ 42,347	$ 10,106