2.2.0.25truefalse06042 - Disclosure - Stock-Based Compensation Plans (Details 2)truefalsefalse1falsefalseUSDtruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock Units [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Restricted_Stock_Units_Memberhttp://www.sec.gov/CIK0001031296duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseRestricted Stock Units [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldife_RestrictedStockUnitsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falsefalsetruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock Units [Member] 1/1/2009 - 12/31/2009 TwelveMonthsEnded_31Dec2009_Restricted_Stock_Units_Memberhttp://www.sec.gov/CIK0001031296duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseRestricted Stock Units [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldife_RestrictedStockUnitsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli03falsefalsetruefalse{us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis} : Restricted Stock Units [Member] 1/1/2008 - 12/31/2008 TwelveMonthsEnded_31Dec2008_Restricted_Stock_Units_Memberhttp://www.sec.gov/CIK0001031296duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseRestricted Stock Units [Member]us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisxbrldihttp://xbrl.org/2006/xbrldife_RestrictedStockUnitsMemberus-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli02true0fe_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedCommonStockUnitsAbstractfefalsenadurationShare based compensation arrangement by share based payment award restricted common stock units.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShare based compensation arrangement by share based payment award restricted common stock units.falsefalseRestricted common stock units3false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse511418511418falsefalsefalsefalsefalse2truefalsefalse533399533399falsefalsefalsefalsefalse3truefalsefalse450683450683falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe number of shares issuable under a share-based award plan pertaining to grants made during the period on other than stock option plans (for example, phantom stock plan, stock appreciation rights plan, performance target plan).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) falsefalseRestricted common shares granted4false0fe_EquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageVestingPeriodfefalsenadurationEquity Instruments Other Than Options Grants In Period Weighted Average Vesting Period.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse003falsefalsefalsefalsefalse2falsefalsefalse003falsefalsefalsefalsefalse3falsefalsefalse003.14falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringEquity Instruments Other Than Options Grants In Period Weighted Average Vesting Period.No authoritative reference available.falsefalseWeighted average vesting period (years)33Stock-Based Compensation Plans (Details 2) (Restricted Stock Units [Member])UnKnownNoRoundingUnKnownUnKnownfalsetrue