Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities
Net income (loss)	$ 53,411	$ (31,497)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of intangible assets	42,013	50,612
Non-cash operating lease expense	12,197	12,250
Stock-based compensation	20,531	17,416
Amortization of prepaid debt fees	2,761	2,610
Deferred taxes, net	1,938	(6,428)
Loss on sale of business	675	3,182
Goodwill impairment	0	38,480
Restructuring, non-cash	910	(879)
Other adjustments, net	(318)	2,148
Changes in operating assets and liabilities, net of acquisition and sale of business:
Accounts receivable	(37,832)	12,270
Inventories	(48,280)	(48,377)
Other current assets	(43,240)	(15,907)
Other long-term assets	3,392	(7,897)
Accounts payable, other current liabilities, and taxes payable	220	55,032
Wages and benefits payable	17,361	(30,877)
Unearned revenue	38,619	32,151
Warranty	(2,177)	(5,031)
Restructuring	23,966	(34,410)
Other operating, net	(9,071)	(7,318)
Net cash provided by operating activities	77,076	37,530
Investing activities
Net proceeds (payments) related to the sale of business	(772)	55,933
Acquisitions of property, plant, and equipment	(18,304)	(14,886)
Business acquisitions, net of cash and cash equivalents acquired	0	23
Other investing, net	73	2,424
Net cash provided by (used in) investing activities	(19,003)	43,494
Financing activities
Issuance of common stock	2,366	2,631
Repurchase of common stock	0	(16,972)
Prepaid debt fees	(517)	(697)
Other financing, net	(4,488)	(4,358)
Net cash used in financing activities	(2,639)	(19,396)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,670)	(8,794)
Increase in cash and cash equivalents	52,764	52,834
Cash and cash equivalents at beginning of period	202,007	162,579
Cash and cash equivalents at end of period	254,771	215,413
Supplemental disclosure of cash flow information:
Income taxes, net	29,031	9,954
Interest	$ 1,578	$ 1,409