Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 36,282	$ 54,854
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,595	12,251
Foreign currency (gains)/losses	12,530	24,831
Stock-based compensation	3,559	8,682
Deferred taxes	3,992	6,663
Changes in operating assets and liabilities:
Accounts receivable	103	11,597
Inventories, net	20,396	(76,730)
Prepaid expenses and other	7,315	9,533
Other assets	(6,166)	(3,752)
Accounts payable	(1,004)	(30,692)
Accrued expenses	(10,738)	(176,449)
Other liabilities	(8,666)	(1,388)
Net cash provided by operating activities	74,198	(160,600)
Cash flows from investing activities:
Purchases of property and equipment	(18,191)	(30,538)
Proceeds of investment sales	4,318	12,638
Purchases of investments	(4,318)	(9,556)
Net cash used in investing activities	(18,191)	(27,456)
Cash flows from financing activities:
Exercise of employee stock options	(3,269)	(8,375)
Payment of debt	(2,280)	(5,834)
Payment of cash dividends	(20,694)	(20,141)
Income tax benefit of options exercised	2,602	5,610
Proceeds from debt	20,000	20,000
Repurchases of shares of common stock	(26,300)	(25,002)
Net cash used in financing activities	(29,941)	(33,742)
Effect of exchange rate changes on cash	(9,769)	(18,775)
Net increase in cash and cash equivalents	16,297	(240,573)
Cash and cash equivalents, beginning of period	288,415	525,153
Cash and cash equivalents, end of period	$ 304,712	$ 284,580