2.4.0.8178 - Disclosure - Share Based Compensation - Additional Information (Detail)truefalsefalse1false falsefalseeol_PE11654---1310-Q0007_STD_91_20130630_0http://www.sec.gov/CIK0001024732duration2013-04-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares02false falsefalseeol_PE11654---1310-Q0007_STD_88_20120630_0http://www.sec.gov/CIK0001024732duration2012-04-04T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares03false falsefalseeol_PE11654---1310-Q0007_STD_181_20130630_0http://www.sec.gov/CIK0001024732duration2013-01-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares04false falsefalseeol_PE11654---1310-Q0007_STD_181_20120630_0http://www.sec.gov/CIK0001024732duration2012-01-02T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares01true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]2false 4igte_StockIssuedDuringPeriodSharesStockOptionsExercisedAndRestrictedStockAwardsigte_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00falsefalsefalse2truefalsefalse300000300000falsefalsefalse3truefalsefalse300000300000falsefalsefalse4truefalsefalse500000500000falsefalsefalsexbrli:sharesItemTypesharesStock Issued During Period Shares Stock Options Exercised And Restricted Stock AwardsNo definition available.false1Shares issued upon exercise of stock options and awards3false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5false truefalseeol_PE11654---1310-Q0007_STD_91_20130630_0_713115x708980http://www.sec.gov/CIK0001024732duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseStock Optionsus-gaap_AwardTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EmployeeStockOptionMemberus-gaap_AwardTypeAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instanceshares0nanafalse0Stock Options4true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]5false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrossus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse527445527445falsefalsefalse2truefalsefalse462000462000falsefalsefalse3truefalsefalse571445571445falsefalsefalse4truefalsefalse502000502000falsefalsefalsexbrli:sharesItemTypesharesGross number of share options (or share units) granted during the period.No definition available.false1Granted options6false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse9false truefalseeol_PE11654---1310-Q0007_STD_91_20130630_0_713115x715834http://www.sec.gov/CIK0001024732duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseRestricted Stock Units (RSUs)us-gaap_AwardTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RestrictedStockUnitsRSUMemberus-gaap_AwardTypeAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instanceshares0nanafalse0Restricted Stock Units (RSUs)7true 3us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Share-based Compensation Arrangement by Share-based Payment Award [Line Items]8false 4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse601445601445falsefalsefalse2truefalsefalse643750643750falsefalsefalse3truefalsefalse723062723062falsefalsefalse4truefalsefalse688750688750falsefalsefalsexbrli:sharesItemTypesharesThe number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false1Granted restricted stock awardsfalseShare Based Compensation - Additional Information (Detail)UnKnownNoRoundingUnKnownUnKnowntruefalsefalseSheethttp://www.igate.com/taxonomy/role/DisclosureShareBasedCompensationAdditionalInformation48