CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 60,720	$ 92,928
Short-term marketable securities	153,144	109,179
Accounts receivable, net of allowances of $195 and $120 in 2014 and 2013, respectively (Note 2)	10,381	12,389
Inventories	56,958	42,235
Deferred tax assets	2,103	2,059
Prepaid expenses and other current assets	8,773	18,632
Total current assets	292,079	277,422
PROPERTY AND EQUIPMENT, net	96,506	90,141
INTANGIBLE ASSETS, net	36,873	40,334
GOODWILL	80,599	80,599
DEFERRED TAX ASSETS (Note 9)	9,472	9,449
OTHER ASSETS	3,887	3,476
Total assets	519,416	501,421
CURRENT LIABILITIES:
Accounts payable	24,777	20,772
Accrued payroll and related expenses	8,834	8,900
Taxes payable	2,753	2,266
Deferred tax liabilities	1,103	943
Deferred income on sales to distributors	18,744	15,727
Other accrued liabilities	2,224	1,810
Total current liabilities	58,435	50,418
LONG-TERM INCOME TAXES PAYABLE (Note 9)	2,722	6,885
DEFERRED TAX LIABILITIES	4,397	5,273
OTHER LIABILITIES	2,229	2,159
Total liabilities	67,783	64,735
COMMITMENTS AND CONTINGENCIES (Notes 9, 10, 11 and 12)
STOCKHOLDERS’ EQUITY:
Common stock	29	30
Additional paid-in capital	203,076	223,660
Accumulated other comprehensive loss	(474)	(470)
Retained earnings	249,002	213,466
Total stockholders’ equity	451,633	436,686
Total liabilities and stockholders’ equity	$ 519,416	$ 501,421