CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net income	$ 169,979	$ 69,174
Adjustments to reconcile net income to net cash provided by operating activities, net of effects of acquisitions
Depreciation	79,731	68,168
Amortization of intangible assets	12,139	12,249
Share-based compensation expense	24,925	18,684
Deferred income taxes	635	(10,232)
Investment gain	(15,133)
Other	1,206	1,235
Changes in operating assets:
Change in accounts receivable	(27,936)	602
Change in inventory	(20,570)	(20,535)
Change in other operating assets	(16,451)	2,903
Changes in operating liabilities:
Change in accounts payable	32,155	3,886
Change in accrued liabilities	18,353	(6,821)
Change in income tax payable	4,627	(11,013)
Change in other operating liabilities	(2,671)	(1,865)
Net cash flows provided by operating activities	260,989	126,435
Cash flows from investing activities
Acquisitions, net of cash received	(157)	591
Purchases of property, plant and equipment	(86,150)	(48,497)
Proceeds from sale of property, plant and equipment	3,145
Proceeds from maturity of short-term investments	5,632	7,723
Purchases of short-term investments	(6,759)	(5,858)
Additional acquisition of noncontrolling interests	0	(6,130)
Other	(5,010)	395
Net cash and cash equivalents used in investing activities	(89,299)	(51,776)
Cash flows from financing activities
Advances on lines of credit and short-term debt	16,138	60,647
Repayments of lines of credit and short-term debt	(142,873)	(3,667)
Proceeds from long-term debt	419,810	726,363
Repayments of long-term debt	(494,238)	(477,659)
Net proceeds from issuance of common stock	4,337	1,977
Repayment of and proceeds from finance lease obligation	(181)	(671)
Taxes paid related to net share settlement	(14,750)	(8,243)
Dividend distribution to noncontrolling interests	(2,172)	(1,565)
Capital contribution from noncontrolling interests	4,170
Other	(500)	(2,502)
Net cash and cash equivalents (used in) provided by financing activities	(210,259)	294,680
Effect of exchange rate changes on cash and cash equivalents	2,878	10,988
Change in cash and cash equivalents, including restricted cash	(35,691)	380,327
Cash and cash equivalents, beginning of period, including restricted cash	320,529	259,507
Cash and cash equivalents, end of period, including restricted cash	284,838	639,834
Supplemental Cash Flow Information
Interest paid during the period	5,858	6,434
Taxes paid during the period	37,320	42,928
Non-cash investing and financing activities:
Accounts payable balance related to the purchase of property, plant and equipment	$ 21,685	$ 8,906