STOCKHOLDERS' EQUITY 2 (Stock Options, Restricted Stock Units and Employee Stock Purchase Plan) (Details) (USD $)			3 Months Ended		6 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended			3 Months Ended						6 Months Ended
	Jun. 30, 2013	Mar. 29, 2013	Jun. 30, 2013 Employee stock options	Mar. 31, 2013 Employee stock options	Jun. 30, 2013 Employee stock options	Jun. 30, 2013 Employee stock options Minimum	Mar. 31, 2013 Employee stock options Minimum	Dec. 31, 2012 Employee stock options Minimum	Jun. 30, 2013 Employee stock options Maximum	Mar. 31, 2013 Employee stock options Maximum	Dec. 31, 2012 Employee stock options Maximum	Jun. 30, 2013 Restricted stock units	Mar. 31, 2013 Restricted stock units	Dec. 31, 2012 Restricted stock units	Jun. 30, 2013 Restricted Stock Units R S U Non Performance Based [Member]	Mar. 31, 2013 Restricted Stock Units R S U Non Performance Based [Member]	Jun. 30, 2013 Performance Shares [Member]	Mar. 31, 2013 Performance Shares [Member]	Jun. 30, 2013 Stock Plan 2005 [Member]	Mar. 29, 2013 Stock Plan 2005 [Member]	Jun. 30, 2013 Ozmo Inc. Employee stock options	Jun. 30, 2013 Ozmo Inc. Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant After Giving Effect To Plan Ratio																			19,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		25,000,000																	158,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period					10 years
Share-based Compensation Arrangement by Share-based Payment Award, Value Assumed as Part of Acuisition	400,000
Weighted-average fair value of the rights to purchase shares (in dollars per share)												$ 8.25	$ 8.75	$ 8.71							$ 0.81	$ 6.17
Share Based Compensation, Arrangement by Share Based Payment Award, Options, Available for Grant for Every Share Underlying Equity Instruments other than Options																			1.61	1.57
Shares counted against the numerical limit for options available for grant prior to May 18, 2011 (in shares)																			1.78
Available for grant
Balance at the beginning of the period (in shares)			4,893,000	6,148,000	6,148,000
Additional restricted stock units approved for issuance (in shares)			25,000,000
Stock units issued (in shares)												(838,000)	(1,182,000)		(838,000)	(1,182,000)					(100,000)	(300,000)
Adjustment for restricted stock units issued (in shares)												(478,000)	(721,000)
Stock units cancelled (in shares)												1,133,000	319,000		1,133,000	319,000	298,000	59,000
Adjustment for restricted stock units cancelled (in shares)												763,000	219,000				182,000	36,000
Options cancelled/expired/forfeited, Available for Grant (in shares)			31,000	15,000
Balance at the end of the period (in shares)			30,984,000	4,893,000	30,984,000
Outstanding Options, Number of Options
Balance at the beginning of the period (in shares)			6,258,000	6,675,000	6,675,000
Options cancelled/expired/forfeited (in shares)			(31,000)	(15,000)
Options exercised (in shares)			(225,000)	(402,000)
Balance at the end of the period (in shares)			6,002,000	6,258,000	6,002,000
Exercise Price Per Share [Abstract]
Balance at the end of the period, low end of range (in dollars per share)						$ 2.13	$ 1.77	$ 1.68
Balance at the end of the period, high end of the range (in dollars per share)									$ 10.01	$ 10.01	$ 10.01
Options cancelled/expired/forfeited, weighted average price per share (in dollars per share)						$ 1.77	$ 3.67		$ 7.12	$ 7.12
Options exercised, weighted average price per share (in dollars per share)						$ 2.90	$ 1.68		$ 8.20	$ 6.28
Weighted-Average Exercise Price per Share
Weighted Average Exercise Price Per Share, Weighted Average Exercise Price Per Share, Beginning			$ 4.33	$ 4.33	$ 4.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price			$ 4.29	$ 4.97
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			$ 4.10	$ 4.37
Weighted Average Exercise Price Per Share, Weighted Average Exercise Price Per Share, Ending			$ 4.34	$ 4.33	$ 4.34