ACQUISITION (Text Disclosures) (Details) (USD $) In Thousands, unless otherwise specified		3 Months Ended		0 Months Ended
May 01, 2012 Concept [Member]	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Maximum [Member]	May 01, 2012 Developed technology [Member] Concept [Member]	May 01, 2012 Developed technology [Member] Minimum [Member] Concept [Member]	May 01, 2012 Developed technology [Member] Maximum [Member] Concept [Member]	May 01, 2012 Tradename [Member] Concept [Member]	May 01, 2012 Customer relationships [Member] Concept [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		2 years	12 years		4 years	12 years	2 years	10 years
Fair Value of intangible assets	$ 44,050			$ 23,750			$ 3,600	$ 16,700

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant