Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 64,261	$ 54,282
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,251	7,612
Foreign currency (gains)/losses	3,445	(336)
Stock-based compensation	8,682	5,712
Deferred taxes	9,023	2,826
Changes in operating assets and liabilities:
Accounts receivable	11,597	(8,048)
Inventories, net	(76,730)	(15,995)
Prepaid expenses and other	9,533	(9,997)
Other assets	(3,752)	(7,553)
Accounts payable	(30,692)	5,528
Accrued expenses	(166,830)	32,920
Other liabilities	(1,388)	3,435
Net cash provided by operating activities	(160,600)	70,386
Cash flows from investing activities:
Purchases of property and equipment	(30,538)	(41,239)
Proceeds of investment sales	12,638	4,844
Purchases of investments	(9,556)	0
Net cash used in investing activities	(27,456)	(36,395)
Cash flows from financing activities:
Exercise of employee stock options	(8,375)	(268)
Payment of debt	(5,834)	(7,816)
Payment of cash dividends	(20,141)	(17,514)
Income tax benefit of options exercised	5,610	2,245
Proceeds from debt	20,000	20,000
Repurchases of shares of common stock	(25,002)	(14,615)
Net cash used in financing activities	(33,742)	(17,968)
Effect of exchange rate changes on cash	(18,775)	(10,328)
Net increase in cash and cash equivalents	(240,573)	5,695
Cash and cash equivalents, beginning of period	525,153	320,025
Cash and cash equivalents, end of period	$ 284,580	$ 325,720