2.4.0.814060 - Disclosure - Long-Term Debt and Notes Payable (Details)truefalsefalse1false USDfalsefalse$D2013Q2http://www.sec.gov/CIK0001035688duration2013-04-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$D2013Q2YTDhttp://www.sec.gov/CIK0001035688duration2013-01-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2012http://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$D2011http://www.sec.gov/CIK0001035688duration2011-01-01T00:00:002011-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false USDtruefalse$D2013Q1_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688duration2013-01-01T00:00:002013-03-31T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$6false USDtruefalseD2012_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$7false truefalseI2013Q2_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688instant2013-06-30T00:00:000001-01-01T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli08false USDtruefalse$I2012Q3_M0912_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688instant2012-09-12T00:00:000001-01-01T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9false USDtruefalse$I2011_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688instant2011-12-31T00:00:000001-01-01T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10false USDtruefalse$I2011Q2_M0601_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688instant2011-06-01T00:00:000001-01-01T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11false USDtruefalse$I2009_SeniorSubordinatedNotesMemberhttp://www.sec.gov/CIK0001035688instant2009-12-31T00:00:000001-01-01T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12false USDtruefalse$D2005Q1_M0224_SeniorSubordinatedNotesMember_EGLAcquisitionCorpMemberhttp://www.sec.gov/CIK0001035688duration2005-02-23T00:00:002005-02-24T00:00:00falsefalse7 5/8% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SeniorSubordinatedNotesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseEGL Acquisition Corp.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisem_EGLAcquisitionCorpMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13false USDtruefalse$D2012Q3_M0813_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-08-12T00:00:002012-08-13T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14false USDtruefalse$D2013Q2YTD_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$15false truefalseD2012_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli016false USDtruefalse$I2011Q2_M0601_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688instant2011-06-01T00:00:000001-01-01T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17false truefalseD2012_LeverageRatioGreaterThan3.75To1.00Member_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseLeverage ratio greater than 3.75 to 1.00sem_DebtInstrumentFinancialCovenantsRatiosAxisxbrldihttp://xbrl.org/2006/xbrldisem_LeverageRatioGreaterThan3.75To1.00Membersem_DebtInstrumentFinancialCovenantsRatiosAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli018false truefalseD2012_LeverageRatioLessThanOrEqualTo3.75To1.00ButGreaterThan3.25To1.00Member_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseLeverage ratio less than or equal to 3.75 to 1.00 but greater than 3.25 to 1.00sem_DebtInstrumentFinancialCovenantsRatiosAxisxbrldihttp://xbrl.org/2006/xbrldisem_LeverageRatioLessThanOrEqualTo3.75To1.00ButGreaterThan3.25To1.00Membersem_DebtInstrumentFinancialCovenantsRatiosAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli019false truefalseD2012_DebtInstrumentAlternateBaseRateMember_DebtInstrumentVariableRateAdministrativeAgentsPrimeRateMember_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberfalsefalseAdministrative agent's Prime Ratesem_DebtInstrumentVariableRateSecondaryClassificationAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateAdministrativeAgentsPrimeRateMembersem_DebtInstrumentVariableRateSecondaryClassificationAxisexplicitMember20false truefalseD2012_DebtInstrumentAlternateBaseRateMember_DebtInstrumentVariableRateFederalFundsEffectiveRateMember_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberfalsefalseFederal Funds Effective Ratesem_DebtInstrumentVariableRateSecondaryClassificationAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateFederalFundsEffectiveRateMembersem_DebtInstrumentVariableRateSecondaryClassificationAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli021false truefalseD2012_DebtInstrumentAlternateBaseRateMember_DebtInstrumentVariableRateAdjustedOneMonthLIBOMember_SeniorSecuredCreditFacilitiesMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberfalsefalseAdjusted one-month LIBOsem_DebtInstrumentVariableRateSecondaryClassificationAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateAdjustedOneMonthLIBOMembersem_DebtInstrumentVariableRateSecondaryClassificationAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli022false truefalseD2012_LeverageRatioGreaterThan3.75To1.00Member_SeniorSecuredCreditFacilitiesMember_MinimumMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMemberfalsefalseLeverage ratio greater than 3.75 to 1.00sem_DebtInstrumentFinancialCovenantsRatiosAxisxbrldihttp://xbrl.org/2006/xbrldisem_LeverageRatioGreaterThan3.75To1.00Membersem_DebtInstrumentFinancialCovenantsRatiosAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli023false USDtruefalse$D2012_SeniorSecuredCreditFacilitiesMember_MaximumMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$24false truefalseD2012_LeverageRatioLessThanOrEqualTo3.25To1.00Member_SeniorSecuredCreditFacilitiesMember_MaximumMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseSenior secured credit facilitiesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSecuredCreditFacilitiesMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberfalsefalseLeverage ratio less than or equal to 3.25 to 1.00sem_DebtInstrumentFinancialCovenantsRatiosAxisxbrldihttp://xbrl.org/2006/xbrldisem_LeverageRatioLessThanOrEqualTo3.25To1.00Membersem_DebtInstrumentFinancialCovenantsRatiosAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli025false USDtruefalseD2011Q2_M0601_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688duration2011-05-31T00:00:002011-06-01T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$26false USDtruefalse$D2012_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$27false USDtruefalse$I2013Q2_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688instant2013-06-30T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$28false USDtruefalse$I2011_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688instant2011-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$29false truefalseD2012_DebtInstrumentVariableRateBaseAdjustedLIBOMember_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAdjusted LIBOsem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateBaseAdjustedLIBOMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli030false truefalseD2012_DebtInstrumentAlternateBaseRateMember_TermLoanFacilityMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli031false truefalseD2012_DebtInstrumentVariableRateBaseAdjustedLIBOMember_TermLoanFacilityMember_MinimumMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Term loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_TermLoanFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMemberfalsefalseAdjusted LIBOsem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateBaseAdjustedLIBOMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli032false USDtruefalse$I2011Q2_M0601_StandbyLettersOfCreditMemberhttp://www.sec.gov/CIK0001035688instant2011-06-01T00:00:000001-01-01T00:00:00falsefalseStandby letters of creditus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StandbyLettersOfCreditMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$33false USDtruefalse$I2011Q2_M0601_SwinglineLoansMemberhttp://www.sec.gov/CIK0001035688instant2011-06-01T00:00:000001-01-01T00:00:00falsefalseSwingline loansus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SwinglineLoansMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$34false USDtruefalse$I2013Q2_NotesPayableOtherPayablesMemberhttp://www.sec.gov/CIK0001035688instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseOther debtus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_NotesPayableOtherPayablesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$35false USDtruefalse$I2012_NotesPayableOtherPayablesMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseOther debtus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_NotesPayableOtherPayablesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$36false USDtruefalse$I2011_NotesPayableOtherPayablesMemberhttp://www.sec.gov/CIK0001035688instant2011-12-31T00:00:000001-01-01T00:00:00falsefalseOther debtus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_NotesPayableOtherPayablesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$37false USDtruefalseD2011Q2_M0601_RevolvingCreditFacilityMemberhttp://www.sec.gov/CIK0001035688duration2011-05-31T00:00:002011-06-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170$38false USDtruefalse$I2013Q2_RevolvingCreditFacilityMemberhttp://www.sec.gov/CIK0001035688instant2013-06-30T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$39false USDtruefalse$I2012_RevolvingCreditFacilityMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$40false USDtruefalse$I2011_RevolvingCreditFacilityMemberhttp://www.sec.gov/CIK0001035688instant2011-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$41false truefalseD2012_DebtInstrumentVariableRateBaseAdjustedLIBOMember_RevolvingCreditFacilityMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAdjusted LIBOsem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateBaseAdjustedLIBOMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli042false truefalseD2012_RevolvingCreditFacilityMember_DebtInstrumentAlternateBaseRateMemberhttp://www.sec.gov/CIK0001035688duration2012-01-01T00:00:002012-12-31T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli043false truefalseI2012_RevolvingCreditFacilityMember_MinimumMember_DebtInstrumentVariableRateBaseAdjustedLIBOMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMemberfalsefalseAdjusted LIBOsem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateBaseAdjustedLIBOMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli044false truefalseI2012_RevolvingCreditFacilityMember_MinimumMember_DebtInstrumentAlternateBaseRateMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli045false truefalseI2012_RevolvingCreditFacilityMember_MaximumMember_DebtInstrumentVariableRateBaseAdjustedLIBOMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberfalsefalseAdjusted LIBOsem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentVariableRateBaseAdjustedLIBOMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli046false truefalseI2012_RevolvingCreditFacilityMember_MaximumMember_DebtInstrumentAlternateBaseRateMemberhttp://www.sec.gov/CIK0001035688instant2012-12-31T00:00:000001-01-01T00:00:00falsefalse2011 - senior secured credit facilities: Revolving loanus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RevolvingCreditFacilityMemberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberfalsefalseAlternate base ratesem_DebtInstrumentVariableRateBaseAxisxbrldihttp://xbrl.org/2006/xbrldisem_DebtInstrumentAlternateBaseRateMembersem_DebtInstrumentVariableRateBaseAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli047false USDtruefalse$I2011Q2_M0601_ParentMember_SeniorSubordinatedNotes10PercentDue2015Memberhttp://www.sec.gov/CIK0001035688instant2011-06-01T00:00:000001-01-01T00:00:00falsefalse10% senior subordinated notesus-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldisem_SeniorSubordinatedNotes10PercentDue2015Memberus-gaap_DebtInstrumentAxisexplicitMemberfalsefalseHoldingsdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ParentMemberdei_LegalEntityAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_DebtInstrumentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalsepositiveLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-Term Debt and Notes Payable2false 4us-gaap_DebtInstrumentInterestRateStatedPercentageus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6truetruefalse0.076250.07625falsefalsefalse7truetruefalse0.076250.07625falsefalsefalse8falsetruefalse00falsefalsefalse9truetruefalse0.076250.07625falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47truetruefalse0.100.10falsefalsefalsenum:percentItemTypepureInterest rate stated in the contractual debt agreement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 false0Interest rate of debt (as a percent)3false 4us-gaap_LongTermDebtus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse15309580001530958000USD$falsetruefalse2truefalsefalse15309580001530958000USD$falsetruefalse3truefalsefalse13029430001302943000USD$falsetruefalse4truefalsefalse12294980001229498000USD$falsetruefalse5falsefalsefalse00falsefalsefalse6truefalsefalse7000000070000000USD$falsetruefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9truefalsefalse345000000345000000USD$falsetruefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26truefalsefalse10966410001096641000USD$falsetruefalse27truefalsefalse811060000811060000USD$falsetruefalse28truefalsefalse837974000837974000USD$falsetruefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34truefalsefalse1489800014898000USD$falsetruefalse35truefalsefalse63020006302000USD$falsetruefalse36truefalsefalse65240006524000USD$falsetruefalse37falsefalsefalse00falsefalsefalse38truefalsefalse105000000105000000USD$falsetruefalse39truefalsefalse130000000130000000USD$falsetruefalse40truefalsefalse4000000040000000USD$falsetruefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 true2Total debt4false 4us-gaap_LongTermDebtCurrentus-gaap_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:monetaryItemTypemonetaryCarrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 false2Less: current maturities5false 4us-gaap_LongTermDebtNoncurrentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15177280001517728000falsefalsefalse2truefalsefalse15177280001517728000falsefalsefalse3truefalsefalse12912970001291297000falsefalsefalse4truefalsefalse12186500001218650000falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCarrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false2Long-term debt, net of current portion6false 4us-gaap_DebtInstrumentUnamortizedDiscountus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26truefalsefalse1420000014200000falsefalsefalse27truefalsefalse72000007200000falsefalsefalse28truefalsefalse78000007800000falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -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. false2Unamortized discount7false 4us-gaap_LineOfCreditFacilityMaximumBorrowingCapacityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16truefalsefalse11500000001150000000falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25truefalsefalse850000000850000000falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32truefalsefalse7500000075000000falsefalsefalse33truefalsefalse2500000025000000falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37truefalsefalse300000000300000000falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryMaximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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 Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 false2Maximum borrowing capacity8false 4sem_DebtInstrumentMaturityTermsem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse007 yearsfalsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse005 yearsfalsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the term of the debt agreement.No definition available.false0Debt instrument term9false 4us-gaap_DebtInstrumentRepurchaseAmountus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse275000000275000000falsefalsefalse9falsefalsefalse00falsefalsefalse10truefalsefalse266500000266500000falsefalsefalse11truefalsefalse4850000048500000falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47truefalsefalse150000000150000000falsefalsefalsexbrli:monetaryItemTypemonetaryFair value amount of debt instrument that was repurchased.No definition available.false2Repurchase of aggregate principal amount10false 4us-gaap_GainsLossesOnExtinguishmentOfDebtus-gaap_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:monetaryItemTypemonetaryDifference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.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 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20, 21 -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. false2Loss on early retirement of debt11false 4sem_LineOfCreditFacilityCollateralPercentageOfForeignSubsidiariesCapitalStocksem_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23truetruefalse0.650.65falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the percentage of the capital stock of the entity's certain foreign subsidiaries which is pledged as collateral for the credit agreement.No definition available.false0Percentage of capital stock of foreign subsidiaries pledged as collateral for borrowings12false 4us-gaap_DebtInstrumentIncreaseAdditionalBorrowingsus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12truefalsefalse660000000660000000falsefalsefalse13truefalsefalse275000000275000000falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryIncrease of additional borrowings on existing and new debt instruments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 false2Aggregate principal amount drawn13false 4us-gaap_DebtInstrumentDescriptionOfVariableRateBasisus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00administrative agent's Prime Ratefalsefalsefalse20falsefalsefalse00Federal Funds Effective Ratefalsefalsefalse21falsefalsefalse00Adjusted LIBO from time to time for an interest period of one monthfalsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00Adjusted LIBOfalsefalsefalse30falsefalsefalse00Alternate base ratefalsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00Adjusted LIBOfalsefalsefalse42falsefalsefalse00Alternate base ratefalsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringThe reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.No definition available.false0Variable rate basis14false 4us-gaap_DebtInstrumentBasisSpreadOnVariableRateus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20truetruefalse0.00500.0050falsefalsefalse21truetruefalse0.01000.0100falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29truetruefalse0.03750.0375falsefalsefalse30truetruefalse0.02750.0275falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41truetruefalse0.03250.0325falsefalsefalse42truetruefalse0.02250.0225falsefalsefalse43truetruefalse0.02750.0275falsefalsefalse44truetruefalse0.01750.0175falsefalsefalse45truetruefalse0.03750.0375falsefalsefalse46truetruefalse0.02750.0275falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureThe percentage points added to the reference rate to compute the variable rate on the debt instrument.No definition available.false0Interest rate margin (as a percent)15false 4sem_DebtInstrumentReferenceRatesem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31truetruefalse0.01750.0175falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the reference rate used to compute the variable rate on the debt instrument.No definition available.false0Reference rate (as a percent)16false 4us-gaap_DebtInstrumentPeriodicPaymentPrincipalus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26truefalsefalse28000002800000falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of the required periodic payments applied to principal.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false2Periodic payment in equal quarterly installments17false 4sem_DebtInstrumentMinimumAmountOutstandingOnSeniorSubordinatedNotesPriorToScheduledMaturityEffectingDueDatesem_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26truefalsefalse6000000060000000falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39truefalsefalse6000000060000000falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the minimum amount outstanding on senior subordinated notes prior to scheduled maturity effecting the due date of the amount outstanding on the debt instrument.No definition available.false2Specified amount of debt outstanding on 7 5/8% senior subordinated notes 90 days prior to scheduled maturity effecting due date of debt instrument18false 4sem_DebtInstrumentPercentageOfNetProceedsFromAssetOrOtherDispositionOrCasualtyOrCondemnationToBeUsedForPrepaymentsem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15truetruefalse1.001.00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the percentage of net cash proceeds from all sales of assets or other dispositions by the entity or as a result of casualty or condemnation, subject to reinvestment provisions and other customary adjustments, required to be used for the prepayment of the debt instrument.No definition available.false0Percentage of net cash proceeds received from non-ordinary course asset sales or other dispositions, or as a result of a casualty or condemnation to be used for prepayment of debt19false 4sem_DebtInstrumentPrepaymentAsPercentageOfProceedsOfSpecifiedDebtIssuancesem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15truetruefalse1.001.00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the mandatory prepayment as a percentage of the proceeds received from specified debt issuance.No definition available.false0Percentage of net proceeds received from the issuance of debt obligations other than certain permitted debt obligations to be used for prepayment of debt20false 4sem_DebtInstrumentPrepaymentAsPercentageOfExcessCashFlowssem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17truetruefalse0.500.50falsefalsefalse18truetruefalse0.250.25falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the mandatory prepayment as a percentage of excess cash flows for any fiscal year unless a specified leverage ratio is met.No definition available.false0Percentage of excess cash flow to be used for prepayment of debt21false 4sem_DebtInstrumentCovenantConsolidatedLeverageRatiosem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22truefalsefalse3.753.75falsefalsefalse23falsefalsefalse00falsefalsefalse24truefalsefalse3.253.25falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:pureItemTypepureRepresents the ratio of consolidated adjusted earnings before interest, taxes, depreciation and amortization to interest expense used as a basis for determining the amount of the mandatory prepayment of the debt instrument under the covenants.No definition available.false0Consolidated leverage ratio for mandatory prepayment under the credit facility's covenants22false 4sem_DebtInstrumentCovenantAnnualCapitalExpendituresem_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23truefalsefalse125000000125000000falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the annual capital expenditure permitted under the terms of the credit facilities' covenantsNo definition available.false2Annual capital expenditure permitted under the covenants23false 4sem_DebtInstrumentCovenantAnnualCapitalExpenditureCarryOverPercentageOfAmountPermittedInPreviousFiscalYearsem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15truetruefalse0.500.50falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the percentage of the amount permitted for capital expenditures in previous fiscal year which can carry over under the terms of the debt covenants.No definition available.false0Percentage of the amount permitted for capital expenditures in previous fiscal year which can carry-over24false 4sem_DebtRedemptionPriceUponChangeOfControlAsPercentageOfPrincipalAmountsem_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6truetruefalse1.011.01falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalse18falsetruefalse00falsefalsefalse19falsetruefalse00falsefalsefalse20falsetruefalse00falsefalsefalse21falsetruefalse00falsefalsefalse22falsetruefalse00falsefalsefalse23falsetruefalse00falsefalsefalse24falsetruefalse00falsefalsefalse25falsetruefalse00falsefalsefalse26falsetruefalse00falsefalsefalse27falsetruefalse00falsefalsefalse28falsetruefalse00falsefalsefalse29falsetruefalse00falsefalsefalse30falsetruefalse00falsefalsefalse31falsetruefalse00falsefalsefalse32falsetruefalse00falsefalsefalse33falsetruefalse00falsefalsefalse34falsetruefalse00falsefalsefalse35falsetruefalse00falsefalsefalse36falsetruefalse00falsefalsefalse37falsetruefalse00falsefalsefalse38falsetruefalse00falsefalsefalse39falsetruefalse00falsefalsefalse40falsetruefalse00falsefalsefalse41falsetruefalse00falsefalsefalse42falsetruefalse00falsefalsefalse43falsetruefalse00falsefalsefalse44falsetruefalse00falsefalsefalse45falsetruefalse00falsefalsefalse46falsetruefalse00falsefalsefalse47falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be repurchased in the event of a change of control by the entity.No definition available.false0Percentage of principal amount at which notes may be required to be repurchased in event of change of control by the entity25true 4us-gaap_LongTermDebtByMaturityAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Maturities of Long-Term Debt and Notes Payable26false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1164600011646000falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false2201327false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwous-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse97420009742000falsefalsefalse2truefalsefalse97420009742000falsefalsefalse3truefalsefalse95300009530000falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false2201428false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1053600010536000falsefalsefalse2truefalsefalse1053600010536000falsefalsefalse3truefalsefalse7944000079440000falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false2201529false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse296134000296134000falsefalsefalse2truefalsefalse296134000296134000falsefalsefalse3truefalsefalse138684000138684000falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false2201630false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFiveus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse40750004075000falsefalsefalse2truefalsefalse40750004075000falsefalsefalse3truefalsefalse87010008701000falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false2201731false 5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse12022190001202219000USD$falsetruefalse2truefalsefalse12022190001202219000USD$falsetruefalse3truefalsefalse10549420001054942000USD$falsetruefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalse18falsefalsefalse00falsefalsefalse19falsefalsefalse00falsefalsefalse20falsefalsefalse00falsefalsefalse21falsefalsefalse00falsefalsefalse22falsefalsefalse00falsefalsefalse23falsefalsefalse00falsefalsefalse24falsefalsefalse00falsefalsefalse25falsefalsefalse00falsefalsefalse26falsefalsefalse00falsefalsefalse27falsefalsefalse00falsefalsefalse28falsefalsefalse00falsefalsefalse29falsefalsefalse00falsefalsefalse30falsefalsefalse00falsefalsefalse31falsefalsefalse00falsefalsefalse32falsefalsefalse00falsefalsefalse33falsefalsefalse00falsefalsefalse34falsefalsefalse00falsefalsefalse35falsefalsefalse00falsefalsefalse36falsefalsefalse00falsefalsefalse37falsefalsefalse00falsefalsefalse38falsefalsefalse00falsefalsefalse39falsefalsefalse00falsefalsefalse40falsefalsefalse00falsefalsefalse41falsefalsefalse00falsefalsefalse42falsefalsefalse00falsefalsefalse43falsefalsefalse00falsefalsefalse44falsefalsefalse00falsefalsefalse45falsefalsefalse00falsefalsefalse46falsefalsefalse00falsefalsefalse47falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -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. false22018 and beyondfalseLong-Term Debt and Notes Payable (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseNoteshttp://www.selectmedicalcorp.com/role/DisclosureLongTermDebtAndNotesPayableDetails4731