Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 162,412	$ 103,807
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,228	24,021
Japan customs expense	0	32,754
Foreign currency (gains)/losses	(224)	4,388
Stock-based compensation	16,256	11,510
Deferred taxes	2,026	(11,553)
Changes in operating assets and liabilities:
Accounts receivable	(10,435)	(10,780)
Inventories, net	(23,492)	8,195
Prepaid expenses and other	3,515	(5,667)
Other assets	(10,419)	(17,064)
Accounts payable	8,306	5,245
Accrued expenses	57,725	(25,885)
Other liabilities	8,352	8,402
Net cash provided by operating activities	239,250	127,373
Cash flows from investing activities:
Purchases of property and equipment	(64,467)	(27,985)
Proceeds of investment sales	16,999	0
Purchases of investments	(15,075)	0
Net cash used in investing activities	(62,543)	(27,985)
Cash flows from financing activities:
Exercises of employee stock options	2,591	25,924
Payments on debt financing	(26,279)	(26,501)
Payments of cash dividends	(36,626)	(26,671)
Income tax benefit of options exercised	6,845	10,298
Proceeds from long-term debt	100,006	0
Payment of related party debt	0	(16,995)
Repurchases of shares of common stock	(179,608)	(51,045)
Net cash used in financing activities	(133,071)	(84,990)
Effect of exchange rate changes on cash	5,319	(2,701)
Net increase in cash and cash equivalents	48,955	11,697
Cash and cash equivalents, beginning of period	272,974	230,337
Cash and cash equivalents, end of period	$ 321,929	$ 242,034