CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
NET REVENUES	$ 91,715		$ 78,045		$ 256,677		$ 226,200
COST OF REVENUES	42,941		39,294		121,832		115,101
GROSS PROFIT	48,774		38,751		134,845		111,099
OPERATING EXPENSES:
Research and development	12,984		11,428		38,745		34,134
Sales and marketing	11,212		10,329		33,357		27,643
General and administrative	7,984		7,941		23,784		22,135
Charge related to SemiSouth (Note 15)	0		25,300		0		25,300
Total operating expenses	32,180		54,998		95,886		109,212
INCOME (LOSS) FROM OPERATIONS	16,594		(16,247)		38,959		1,887
OTHER INCOME (LOSS)
Charge related to SemiSouth (Note 15)	0		(33,937)		0		(33,937)
Other income, net	82		837		864		1,647
Total other income (loss)	82		(33,100)		864		(32,290)
INCOME (LOSS) BEFORE PROVISION FOR (BENEFIT FROM) INCOME TAXES	16,676		(49,347)		39,823		(30,403)
PROVISION FOR (BENEFIT FROM) INCOME TAXES	22		(4,941)		(1,406)		13,718
NET INCOME (LOSS)	$ 16,654		$ (44,406)		$ 41,229		$ (44,121)
EARNINGS (LOSS) PER SHARE:
Basic	$ 0.56		$ (1.54)		$ 1.41		$ (1.54)
Diluted	$ 0.54	[1]	$ (1.54)	[1]	$ 1.36	[1]	$ (1.54)	[1]
SHARES USED IN PER SHARE CALCULATION:
Basic	29,762		28,908		29,235		28,586
Diluted	30,652	[1]	28,908	[1]	30,237	[1]	28,586	[1]

[1] The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the 2013 and 2012 awards in the 2013 and 2012 calculation, respectively, as those shares were not contingently issuable as of the end of the period.