2.4.0.81090 - Disclosure - 401(k) Savings Plantruefalsefalse1false falsefalseD2012http://www.sec.gov/CIK0001436304duration2012-01-01T00:00:002012-12-31T00:00:001true 1us-gaap_CompensationAndRetirementDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0401(k) Savings Plan2false 2us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> 9. 401(k) Savings Plan         In 2006, the Company sponsored a defined contribution savings plan under Section 401(k) of the Internal Revenue Code ("the 401(k) Plan"). The 401(k) Plan covers all employees who meet defined minimum age and service requirements, and allows participants to defer a portion of their annual compensation on a pretax basis. The Company contributes a percentage of its eligible employees' earnings. For the years ended December 31, 2012, 2011 and 2010, the total amounts included in expense for its contributions were $208,000, $156,000 and $154,000, respectively.</div> falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for pension and other postretirement benefits.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Implementation Guide (Q and A) -Number FAS88 -Paragraph 63 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. 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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0401(k) Savings Planfalse401(k) Savings PlanUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.kytherabiopharma.com/role/Disclosure401kSavingsPlan12