CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 96,825	$ 65,683
Adjustments to reconcile net income to net cash provided by operating activities:
Inventory step-up amortization	0	1,598
Depreciation and amortization	23,933	17,420
Amortization of debt discount and issuance costs	905	5,690
Stock-based compensation expense	14,900	13,684
Deferred income taxes, net	738	5,266
Contingent consideration	(9,295)	0
Other	276	103
Changes in operating assets and liabilities, excluding impact of acquisitions:
Accounts receivable	(8,433)	(31,940)
Inventories	(58,106)	(42,773)
Prepaid expenses and other assets	2,402	(563)
Operating lease right of use assets	(21,457)	(3,582)
Other assets	(406)	1,748
Accounts payable	6,322	8,317
Accrued expenses	(4,014)	4,467
Operating Lease Liabilities	23,852	(3,713)
Long-term liabilities	392	(1,655)
Total cash provided by operating activities	68,834	46,913
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	71
Additions to capitalized software costs	(1,875)	(2,191)
Purchases of property, plant and equipment	(52,576)	(24,078)
Other investing activities	17	0
Total cash used in investing activities	(54,434)	(26,198)
Cash flows from financing activities:
Proceeds from exercise of stock options	463	860
Payment of tax withholding obligation on vesting of restricted stock	(14,759)	0
Repayment of Convertible Senior Notes	(18)	(8)
Total cash (used in) provided by financing activities	(14,314)	852
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(7,388)	(4,532)
Net (decrease) increase in cash, cash equivalents and restricted cash	(7,302)	17,035
Cash, cash equivalents and restricted cash, beginning of period	603,814	717,292
Cash and cash equivalents, end of period	596,512	734,327
Supplemental disclosure of non-cash investing and financing activities:
Assets acquired under operating leases	$ 21,739	$ 28,605