Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 8,431	$ 85,065
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	34,679	27,208
Amortization of debt issuance costs	1,631	1,836
Share-based compensation	6,084	5,940
Amortization of intangible assets	33,092	36,143
Deferred income taxes	(4,100)	5,113
Loss on litigation judgment	29,200	0
Unrealized loss on derivative instruments and other	11,040	6,204
Changes in operating assets and liabilities, net of the effects of acquisitions:
Accounts receivable, net	21,458	(51,237)
Inventories	(7,596)	8,183
Prepaid expenses and other current assets	5,625	3,028
Accounts payable and accrued expenses	(19,962)	(14,917)
Income taxes payable	(15,844)	(781)
Other	(5,194)	908
Net cash provided by operating activities	98,544	112,693
Cash flows from investing activities:
Acquisitions, net of cash received	0	(1,681)
Additions to property, plant and equipment and capitalized software	(29,547)	(41,690)
Other	(3,289)	1,000
Net cash used in investing activities	(32,836)	(42,371)
Cash flows from financing activities:
Proceeds from exercise of stock options and issuance of ordinary shares	709	5,813
Payment of employee restricted stock tax withholdings	(15)	(275)
Payments on debt	(2,375)	(4,157)
Payments to repurchase ordinary shares	(35,175)	(150,749)
Payments of debt and equity issuance costs	0	(1,269)
Net cash used in financing activities	(36,856)	(150,637)
Net change in cash and cash equivalents	28,852	(80,315)
Cash and cash equivalents, beginning of period		729,833
Cash and cash equivalents, end of period	$ 802,971	$ 649,518