Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income	$ 108,236	$ 57,009
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,938	15,853
Japan customs expense	0	32,754
Foreign currency (gains)/losses	(938)	(1,763)
Stock-based compensation	11,131	7,762
Deferred taxes	3,508	(7,580)
Changes in operating assets and liabilities:
Accounts receivable	(13,447)	(6,423)
Inventories, net	(12,912)	7,943
Prepaid expenses and other	(7,441)	(1,882)
Other assets	(12,479)	(13,152)
Accounts payable	12,152	2,372
Accrued expenses	56,860	(23,571)
Other liabilities	6,746	11,466
Net cash provided by operating activities	168,354	80,788
Cash flows from investing activities:
Purchases of property and equipment	(30,142)	(16,440)
Proceeds on investment sales	13,944	0
Purchases of investments	(9,855)	0
Net cash used in investing activities	(26,053)	(16,440)
Cash flows from financing activities:
Exercise of employee stock options	1,951	13,039
Payment of debt	(15,398)	(15,058)
Payment of cash dividends	(24,741)	(16,714)
Income tax benefit of options exercised	6,316	4,747
Proceeds from long-term debt	100,006	0
Payment of related party debt	0	(16,995)
Repurchases of shares of common stock	(113,314)	(33,817)
Net cash used in financing activities	(45,180)	(64,798)
Effect of exchange rate changes on cash	1,706	3,516
Net increase (decrease) in cash and cash equivalents	98,827	3,066
Cash and cash equivalents, beginning of period	272,974	230,337
Cash and cash equivalents, end of period	$ 371,801	$ 233,403