CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities:
Net income	$ 242,677	$ 235,579
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,063	29,904
Impairment charge	0	250
Provision for credit losses	2,890	1,530
Deferred income taxes	3,948	(2,571)
Share-based compensation expense	14,615	14,400
Other	456	909
Changes in assets and liabilities:
Accounts receivable	(45,240)	(53,841)
Inventories	2,163	(2,412)
Other assets and liabilities	(10,325)	(21,416)
Accounts payable	(8,123)	(4,450)
Deferred revenue	838	703
Net cash provided by operating activities	237,962	198,585
Cash Flows from Investing Activities:
Purchases of property and equipment	(30,026)	(30,273)
Acquisition of a business	0	(77,000)
Proceeds from net investment hedges	416	329
Net cash used by investing activities	(29,610)	(106,944)
Cash Flows from Financing Activities:
Borrowings under credit facility, net	69,500	0
Repurchases of common stock	(400,890)	(154,764)
Proceeds from exercises of stock options and employee stock purchase plans	7,193	20,879
Shares withheld for statutory tax withholding payments on restricted stock	(6,124)	(10,189)
Net cash used by financing activities	(330,321)	(144,074)
Net effect of changes in exchange rates on cash	(2,327)	(4,066)
Net increase (decrease) in cash and cash equivalents	(124,296)	(56,499)
Cash and cash equivalents at beginning of period	288,266	453,932
Cash and cash equivalents at end of period	163,970	397,433
Supplemental Cash Flow Information:
Unpaid property and equipment, reflected in accounts payable and accrued liabilities	$ 10,702	$ 15,182