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aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that is expected to be recognized in the fourth fiscal year following the latest fiscal year.No definition available.false2201614false 5sem_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedToBeRecognizedInYearFivesem_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse5300053000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAs of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that is expected to be recognized in the fifth fiscal year following the latest fiscal year.No definition available.false22017falseStock Option and Restricted Stock Plans (Details 3) (USD $)NoRoundingThousandsNoRoundingUnKnowntruefalsefalseSheethttp://www.selectmedicalcorp.com/role/DisclosureStockOptionAndRestrictedStockPlansDetails31614