GOODWILL AND INTANGIBLE ASSETS (Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of acquired developed technologies included in consolidated cost of revenue	$ 2,478	$ 1,986	$ 4,787	$ 3,971
Amortization of acquired intangible assets included in consolidated operating expenses	3,606	3,549	8,144	7,100
Total	$ 6,084	$ 5,535	$ 12,931	$ 11,071