CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 85,426	$ 63,394
Short-term marketable securities	59,630	31,766
Accounts receivable, net of allowances of $95 and $247 in 2013 and 2012, respectively (Note 2)	15,772	7,326
Inventories	43,199	44,625
Deferred tax assets	344	352
Prepaid expenses and other current assets	12,097	17,401
Total current assets	216,468	164,864
PROPERTY AND EQUIPMENT, net	89,743	89,724
INTANGIBLE ASSETS, net	44,054	47,738
GOODWILL	80,599	80,599
DEFERRED TAX ASSETS	14,425	11,532
OTHER ASSETS	4,608	4,673
Total assets	449,897	399,130
CURRENT LIABILITIES:
Accounts payable	21,347	16,452
Accrued payroll and related expenses	7,681	6,720
Taxes payable	1,476	1,213
Deferred tax liabilities	748	1,193
Deferred income on sales to distributors	15,035	11,550
Other accrued liabilities	2,650	3,439
Total current liabilities	48,937	40,567
LONG-TERM INCOME TAXES PAYABLE	8,665	7,937
DEFERRED TAX LIABILITIES	7,646	8,179
PENSION LIABILITY	1,366	1,398
Total liabilities	66,614	58,081
COMMITMENTS AND CONTINGENCIES (Notes 9, 11 and 12)
STOCKHOLDERS’ EQUITY:
Common stock	29	28
Additional paid-in capital	198,375	175,668
Accumulated other comprehensive loss	(687)	(293)
Retained earnings	185,566	165,646
Total stockholders’ equity	383,283	341,049
Total liabilities and stockholders’ equity	$ 449,897	$ 399,130