Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 364,888	$ 221,645	$ 153,330
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,923	33,412	32,850
Japan customs expense	0	0	32,754
Foreign currency (gains)/losses	(1,077)	(3,874)	4,162
Stock-based compensation	32,620	21,358	15,450
Deferred taxes	(41,748)	4,692	108
Changes in operating assets and liabilities:
Accounts receivable	(34,304)	(7,884)	(5,890)
Inventories, net	(207,436)	(22,605)	2,415
Prepaid expenses and other	(23,317)	(2,358)	(4,690)
Other assets	(22,619)	(11,579)	(16,809)
Accounts payable	32,643	15,831	6,077
Accrued expenses	389,093	62,056	1,624
Other liabilities	6,510	282	2,934
Net cash provided by operating activities	530,176	310,976	224,315
Cash flows from investing activities:
Purchase of property and equipment	(185,103)	(96,645)	(41,809)
Proceeds on investment sales	13,075	20,086	6,634
Purchases of investments	(21,671)	(15,737)	(24,361)
Acquisitions (Note 24))	0	(12,562)	(11,663)
Net cash used in investing activities	(193,699)	(104,858)	(71,199)
Cash flows from financing activities:
Payment of cash dividends	(70,514)	(48,374)	(36,638)
Repurchase of shares of common stock	(140,865)	(201,471)	(67,149)
Exercise of distributor and employee stock options	34,370	4,565	29,713
Income tax benefit of options exercised	45,187	7,750	12,059
Payments on long-term debt	(37,903)	(28,279)	(28,001)
Related party payment	0	0	(16,995)
Proceeds from long-term debt	49,000	101,922	0
Net cash used in financing activities	(120,725)	(163,887)	(107,011)
Effect of exchange rate changes on cash	(10,624)	4,820	(3,468)
Net increase in cash and cash equivalents	205,128	47,051	42,637
Cash and cash equivalents, beginning of period	320,025	272,974	230,337
Cash and cash equivalents, end of period	$ 525,153	$ 320,025	$ 272,974