Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 47,829	$ 15,308
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,504	7,918
Japan customs expense		32,754
Foreign currency (gains)/losses	3,798	789
Stock-based compensation	4,277	3,691
Deferred taxes	1,414	(4,432)
Changes in operating assets and liabilities:
Accounts receivable	6,522	5,079
Inventories, net	8,362	(2,643)
Prepaid expenses and other	5,467	3,371
Other assets	8,604	3,792
Accounts payable	9,677	1,953
Accrued expenses	(11,704)	(11,884)
Other liabilities	4,318	7,359
Net cash provided by operating activities	31,562	42,279
Cash flows from investing activities:
Purchases of property and equipment	(10,595)	(6,501)
Net cash used in investing activities	(10,595)	(6,501)
Cash flows from financing activities:
Exercise of employee stock options	234	2,453
Payment of debt	(8,382)	(8,092)
Payment of cash dividends	(12,458)	(8,350)
Income tax benefit of options exercised	4,735	1,529
Payment of related party debt		16,995
Repurchases of shares of common stock	(5,430)	(21,959)
Net cash used in financing activities	(21,301)	(51,414)
Effect of exchange rate changes on cash	3,566	1,240
Net increase (decrease) in cash and cash equivalents	3,232	(14,396)
Cash and cash equivalents, beginning of period	272,974	230,337
Cash and cash equivalents, end of period	$ 276,206	$ 215,941