CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 95,890	$ 90,092
Short-term marketable securities	130,673	83,769
Accounts receivable, net of allowances of $621 and $318 in 2016 and 2015, respectively	14,679	7,818
Inventories	49,941	51,934
Prepaid expenses and other current assets	7,372	6,790
Total current assets	298,555	240,403
PROPERTY AND EQUIPMENT, net	94,433	99,381
INTANGIBLE ASSETS, net	33,114	38,165
GOODWILL	91,849	91,849
DEFERRED TAX ASSETS	11,064	11,843
OTHER ASSETS	6,273	5,896
Total assets	535,288	487,537
CURRENT LIABILITIES:
Accounts payable	30,117	21,660
Accrued payroll and related expenses	9,011	9,327
Taxes payable	251	3,620
Deferred income on sales to distributors	16,334	15,101
Other accrued liabilities	3,427	2,285
Total current liabilities	59,140	51,993
LONG-TERM INCOME TAXES PAYABLE	2,666	2,511
DEFERRED TAX LIABILITIES	1,002	1,291
OTHER LIABILITIES	3,422	3,123
Total liabilities	66,230	58,918
COMMITMENTS AND CONTINGENCIES (Notes 11, 12 and 13)
STOCKHOLDERS’ EQUITY:
Common stock	28	28
Additional paid-in capital	162,820	145,366
Accumulated other comprehensive loss	(1,885)	(1,851)
Retained earnings	308,095	285,076
Total stockholders’ equity	469,058	428,619
Total liabilities and stockholders’ equity	$ 535,288	$ 487,537