Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 3,316	$ 36,282
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,945	16,595
Japan customs expense	31,355	0
Foreign currency losses	2,411	12,530
Stock-based compensation	2,447	3,559
Deferred taxes	3,668	3,992
Changes in operating assets and liabilities:
Accounts receivable	4,254	103
Inventories, net	(6,906)	20,396
Prepaid expenses and other	(68,479)	7,315
Other assets	2,361	(6,166)
Accounts payable	4,607	(1,004)
Accrued expenses	5,128	(10,738)
Other liabilities	(3,823)	(8,666)
Net cash provided by (used in) operating activities	(2,716)	74,198
Cash flows from investing activities:
Purchases of property and equipment	(10,942)	(18,191)
Proceeds of investment sales	3,902	4,318
Purchases of investments	(4,538)	(4,318)
Acquisitions	(3,300)	0
Net cash used in investing activities	(14,878)	(18,191)
Cash flows from financing activities:
Exercise of employee stock options	2,271	(3,269)
Payment of debt	(15,308)	(2,280)
Payment of cash dividends	(19,840)	(20,694)
Income tax benefit of options exercised	3,402	2,602
Proceeds from debt	23,721	20,000
Repurchases of shares of common stock	(20,006)	(26,300)
Net cash used in financing activities	(25,760)	(29,941)
Effect of exchange rate changes on cash	4,087	(9,769)
Net increase/(decrease) in cash and cash equivalents	(39,267)	16,297
Cash and cash equivalents, beginning of period	289,354	288,415
Cash and cash equivalents, end of period	$ 250,087	$ 304,712