2.4.0.82405404 - Disclosure - Goodwill and Acquired Intangibles (Details 2)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$D2013Q2http://www.sec.gov/CIK0000813672duration2013-03-31T00:00:002013-06-29T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$D2012Q2http://www.sec.gov/CIK0000813672duration2012-04-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2013Q2YTDhttp://www.sec.gov/CIK0000813672duration2012-12-30T00:00:002013-06-29T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$D2012Q2YTDhttp://www.sec.gov/CIK0000813672duration2012-01-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 2cdns_AmortizationOfAcquiredIntangiblesAbstractcdns_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Amortization of acquired intangibles2false 3cdns_AmortizationOfIntangibleAssetsCostOfProductcdns_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse57600005760USD$falsetruefalse2truefalsefalse28910002891USD$falsetruefalse3truefalsefalse95670009567USD$falsetruefalse4truefalsefalse57900005790USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmortization of intangible assets cost of product.No definition available.false2Cost of product and maintenance3false 3us-gaap_AmortizationOfIntangibleAssetsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse53270005327falsefalsefalse2truefalsefalse36430003643falsefalsefalse3truefalsefalse91180009118falsefalsefalse4truefalsefalse74290007429falsefalsefalsexbrli:monetaryItemTypemonetaryThe aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -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. false2Amortization of Intangible Assets4false 3cdns_AmortizationOfAcquiredIntangiblescdns_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse1108700011087USD$falsetruefalse2truefalsefalse65340006534USD$falsetruefalse3truefalsefalse1868500018685USD$falsetruefalse4truefalsefalse1321900013219USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmortization of acquired intangibles, including amortization of costs from existing technology included in cost of product, and amortization of costs from acquired maintenance contracts included in cost of maintenance, and amortization of all other acquired intangibles.No definition available.true2Total amortization of acquired intangiblesfalseGoodwill and Acquired Intangibles (Details 2) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cadence.com/role/GoodwillAndAcquiredIntangiblesDetails244