Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 57,009	$ 63,432
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,853	15,006
Japan customs expense	32,754	0
Foreign currency (gains)/losses	1,763	(4,308)
Stock-based compensation	7,762	4,395
Deferred taxes	(7,580)	3,146
Changes in operating assets and liabilities:
Accounts receivable	6,423	4,054
Inventories, net	(7,943)	8,470
Prepaid expenses and other	1,882	1,158
Other assets	13,152	5,580
Accounts payable	2,372	3,676
Accrued expenses	(23,571)	4,830
Other liabilities	11,466	7,621
Net cash provided by operating activities	80,788	87,152
Cash flows from investing activities:
Purchases of property and equipment	(16,440)	(18,053)
Net cash used in investing activities	16,440	18,053
Cash flows from financing activities:
Exercise of employee stock options	13,039	13,236
Payment of debt	(15,058)	(14,745)
Payment of cash dividends	(16,714)	(15,675)
Income tax benefit of options exercised	4,747	4,828
Payment of related party debt	(16,995)	0
Repurchases of shares of common stock	(33,817)	(39,261)
Net cash used in financing activities	(64,798)	(51,617)
Effect of exchange rate changes on cash	3,516	(2,853)
Cash and cash equivalents, beginning of period	230,337	158,045
Cash and cash equivalents, end of period	$ 233,403	$ 172,674