XML 42 R34.htm IDEA: XBRL DOCUMENT v2.4.1.9
Financial Information for Subsidiary Guarantors and Non-Guarantor Subsidiaries under Select's 6.375% Senior Notes (Details 4) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Operating activities    
Net income $ 37,285us-gaap_ProfitLoss $ 34,367us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Distributions from unconsolidated subsidiaries 28us-gaap_EquityMethodInvestmentDividendsOrDistributions  
Depreciation and amortization 17,348us-gaap_DepreciationAndAmortization 16,229us-gaap_DepreciationAndAmortization
Provision for bad debts 12,670us-gaap_ProvisionForDoubtfulAccounts 11,018us-gaap_ProvisionForDoubtfulAccounts
Equity in earnings of unconsolidated subsidiaries (2,592)us-gaap_IncomeLossFromEquityMethodInvestments (908)us-gaap_IncomeLossFromEquityMethodInvestments
Loss on early retirement of debt   2,277us-gaap_GainsLossesOnExtinguishmentOfDebt
Loss from disposal of assets 5us-gaap_GainLossOnDispositionOfAssets 121us-gaap_GainLossOnDispositionOfAssets
Non-cash stock compensation expense 2,399us-gaap_ShareBasedCompensation 2,155us-gaap_ShareBasedCompensation
Amortization of debt discount, premium and issuance costs 1,929us-gaap_AmortizationOfFinancingCostsAndDiscounts 2,051us-gaap_AmortizationOfFinancingCostsAndDiscounts
Deferred income taxes (2,471)us-gaap_DeferredIncomeTaxExpenseBenefit 57us-gaap_DeferredIncomeTaxExpenseBenefit
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Accounts receivable (61,810)us-gaap_IncreaseDecreaseInAccountsReceivable (87,437)us-gaap_IncreaseDecreaseInAccountsReceivable
Other current assets (5,924)us-gaap_IncreaseDecreaseInOtherCurrentAssets (3,144)us-gaap_IncreaseDecreaseInOtherCurrentAssets
Other assets 1,663us-gaap_IncreaseDecreaseInOtherOperatingAssets (3,938)us-gaap_IncreaseDecreaseInOtherOperatingAssets
Accounts payable 5,332us-gaap_IncreaseDecreaseInAccountsPayable 4,732us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses 6,757us-gaap_IncreaseDecreaseInAccruedLiabilities (12,803)us-gaap_IncreaseDecreaseInAccruedLiabilities
Income taxes 24,916us-gaap_IncreaseDecreaseInIncomeTaxes 19,223us-gaap_IncreaseDecreaseInIncomeTaxes
Net cash provided by (used in) operating activities 37,535us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (16,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Investing activities    
Purchases of property and equipment (27,848)us-gaap_PaymentsToAcquireProductiveAssets (27,299)us-gaap_PaymentsToAcquireProductiveAssets
Investment in businesses (1,000)us-gaap_PaymentsToAcquireEquityMethodInvestments (124)us-gaap_PaymentsToAcquireEquityMethodInvestments
Acquisition of businesses, net of cash acquired (2,686)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired (375)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Net cash used in investing activities (31,534)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (27,798)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Financing activities    
Borrowings on revolving credit facility 215,000us-gaap_ProceedsFromLinesOfCredit 285,000us-gaap_ProceedsFromLinesOfCredit
Payments on revolving credit facility (175,000)us-gaap_RepaymentsOfLongTermLinesOfCredit (200,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
Payments on credit facility term loans (26,884)us-gaap_MaturitiesOfSeniorDebt (33,994)us-gaap_MaturitiesOfSeniorDebt
Issuance of 6.375% senior notes, includes premium   111,650sem_ProceedsFromIssuanceOfSeniorSubordinatedDebt
Borrowings of other debt 6,582us-gaap_ProceedsFromOtherShortTermDebt 6,111us-gaap_ProceedsFromOtherShortTermDebt
Principal payments on other debt (4,584)us-gaap_RepaymentsOfOtherShortTermDebt (3,067)us-gaap_RepaymentsOfOtherShortTermDebt
Debt issuance costs   (4,434)us-gaap_PaymentsOfDebtIssuanceCosts
Proceeds from (repayments of) bank overdrafts (2,821)us-gaap_ProceedsFromRepaymentsOfBankOverdrafts 5,970us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
Dividends paid (13,129)us-gaap_PaymentsOfDividends (14,056)us-gaap_PaymentsOfDividends
Tax benefit from stock based awards 5us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities  
Distributions to non-controlling interests (2,425)us-gaap_PaymentsOfDividendsMinorityInterest (1,452)us-gaap_PaymentsOfDividendsMinorityInterest
Net cash provided by (used in) financing activities (2,767)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations 44,171us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net increase (decrease) in cash and cash equivalents 3,234us-gaap_NetCashProvidedByUsedInContinuingOperations 373us-gaap_NetCashProvidedByUsedInContinuingOperations
Cash and cash equivalents at beginning of period 3,354us-gaap_CashAndCashEquivalentsAtCarryingValue 4,319us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of period 6,588us-gaap_CashAndCashEquivalentsAtCarryingValue 4,692us-gaap_CashAndCashEquivalentsAtCarryingValue
Select    
Operating activities    
Net income 37,285us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
34,367us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Distributions from unconsolidated subsidiaries 28us-gaap_EquityMethodInvestmentDividendsOrDistributions
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Depreciation and amortization 17,348us-gaap_DepreciationAndAmortization
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
16,229us-gaap_DepreciationAndAmortization
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Provision for bad debts 12,670us-gaap_ProvisionForDoubtfulAccounts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
11,018us-gaap_ProvisionForDoubtfulAccounts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Equity in earnings of unconsolidated subsidiaries (2,592)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(908)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Loss on early retirement of debt   2,277us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Loss from disposal of assets 5us-gaap_GainLossOnDispositionOfAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
121us-gaap_GainLossOnDispositionOfAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Non-cash stock compensation expense 2,399us-gaap_ShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
2,155us-gaap_ShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Amortization of debt discount, premium and issuance costs 1,929us-gaap_AmortizationOfFinancingCostsAndDiscounts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
2,051us-gaap_AmortizationOfFinancingCostsAndDiscounts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Deferred income taxes (2,471)us-gaap_DeferredIncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
57us-gaap_DeferredIncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Accounts receivable (61,810)us-gaap_IncreaseDecreaseInAccountsReceivable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(87,437)us-gaap_IncreaseDecreaseInAccountsReceivable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other current assets (5,924)us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(3,144)us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other assets 1,663us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(3,938)us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Accounts payable 5,332us-gaap_IncreaseDecreaseInAccountsPayable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
4,732us-gaap_IncreaseDecreaseInAccountsPayable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Accrued expenses 6,757us-gaap_IncreaseDecreaseInAccruedLiabilities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(12,803)us-gaap_IncreaseDecreaseInAccruedLiabilities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Income taxes 24,916us-gaap_IncreaseDecreaseInIncomeTaxes
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
19,223us-gaap_IncreaseDecreaseInIncomeTaxes
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by (used in) operating activities 37,535us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(16,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Investing activities    
Purchases of property and equipment (27,848)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(27,299)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Investment in businesses (1,000)us-gaap_PaymentsToAcquireEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(124)us-gaap_PaymentsToAcquireEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Acquisition of businesses, net of cash acquired (2,686)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(375)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash used in investing activities (31,534)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(27,798)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Financing activities    
Borrowings on revolving credit facility 215,000us-gaap_ProceedsFromLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
285,000us-gaap_ProceedsFromLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Payments on revolving credit facility (175,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(200,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Payments on credit facility term loans (26,884)us-gaap_MaturitiesOfSeniorDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(33,994)us-gaap_MaturitiesOfSeniorDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Issuance of 6.375% senior notes, includes premium   111,650sem_ProceedsFromIssuanceOfSeniorSubordinatedDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Borrowings of other debt 6,582us-gaap_ProceedsFromOtherShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
6,111us-gaap_ProceedsFromOtherShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Principal payments on other debt (4,584)us-gaap_RepaymentsOfOtherShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(3,067)us-gaap_RepaymentsOfOtherShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Debt issuance costs   (4,434)us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds from (repayments of) bank overdrafts (2,821)us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
5,970us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Equity investment by Holdings 489us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
1,943us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Dividends paid (13,129)us-gaap_PaymentsOfDividends
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(123,556)us-gaap_PaymentsOfDividends
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Tax benefit from stock based awards 5us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Distributions to non-controlling interests (2,425)us-gaap_PaymentsOfDividendsMinorityInterest
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,452)us-gaap_PaymentsOfDividendsMinorityInterest
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by (used in) financing activities (2,767)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
44,171us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net increase (decrease) in cash and cash equivalents 3,234us-gaap_NetCashProvidedByUsedInContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
373us-gaap_NetCashProvidedByUsedInContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash and cash equivalents at beginning of period 3,354us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
4,319us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash and cash equivalents at end of period 6,588us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
4,692us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Select | Reportable legal entities | Select Medical Corporation (Parent Company Only)    
Operating activities    
Net income 35,063us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
33,044us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 985us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
923us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Loss on early retirement of debt   2,277us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Non-cash stock compensation expense 2,399us-gaap_ShareBasedCompensation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
2,155us-gaap_ShareBasedCompensation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Amortization of debt discount, premium and issuance costs 1,929us-gaap_AmortizationOfFinancingCostsAndDiscounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
2,051us-gaap_AmortizationOfFinancingCostsAndDiscounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Deferred income taxes (2,471)us-gaap_DeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
57us-gaap_DeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Equity in earnings of subsidiaries (32,251)sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(32,033)sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Other current assets (6,200)us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(2,043)us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Other assets 1,599us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(3,324)us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Accounts payable 47us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
1,274us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Accrued expenses 1,016us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(12,117)us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Income taxes 24,916us-gaap_IncreaseDecreaseInIncomeTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
19,223us-gaap_IncreaseDecreaseInIncomeTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Net cash provided by (used in) operating activities 27,032us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
11,487us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Investing activities    
Purchases of property and equipment (1,452)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(2,171)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Net cash used in investing activities (1,452)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(2,171)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Financing activities    
Borrowings on revolving credit facility 215,000us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
285,000us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Payments on revolving credit facility (175,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(200,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Payments on credit facility term loans (26,884)us-gaap_MaturitiesOfSeniorDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(33,994)us-gaap_MaturitiesOfSeniorDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Issuance of 6.375% senior notes, includes premium   111,650sem_ProceedsFromIssuanceOfSeniorSubordinatedDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Borrowings of other debt 6,486us-gaap_ProceedsFromOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
6,111us-gaap_ProceedsFromOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Principal payments on other debt (4,201)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(2,567)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Debt issuance costs   (4,434)us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Proceeds from (repayments of) bank overdrafts (2,821)us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
5,970us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Equity investment by Holdings 489us-gaap_ProceedsFromContributionsFromParent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
1,943us-gaap_ProceedsFromContributionsFromParent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Dividends paid (13,129)us-gaap_PaymentsOfDividends
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(123,556)us-gaap_PaymentsOfDividends
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Intercompany (22,524)sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(55,440)sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Tax benefit from stock based awards 5us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
 
Net cash provided by (used in) financing activities (22,579)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(9,317)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Net increase (decrease) in cash and cash equivalents 3,001us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
(1)us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents at beginning of period 70us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
71us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents at end of period 3,071us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
70us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_ParentCompanyMember
Select | Reportable legal entities | Subsidiary Guarantors    
Operating activities    
Net income 32,322us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
31,691us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 13,772us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
13,048us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Provision for bad debts 9,473us-gaap_ProvisionForDoubtfulAccounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
9,317us-gaap_ProvisionForDoubtfulAccounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in earnings of unconsolidated subsidiaries (2,571)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(887)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Loss from disposal of assets 5us-gaap_GainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
6us-gaap_GainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Equity in earnings of subsidiaries (3,280)sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(2,337)sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Accounts receivable (48,350)us-gaap_IncreaseDecreaseInAccountsReceivable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(80,083)us-gaap_IncreaseDecreaseInAccountsReceivable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Other current assets 42us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(1,959)us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Other assets (140)us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(597)us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Accounts payable 6,037us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
4,122us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Accrued expenses 5,048us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
1,802us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash provided by (used in) operating activities 12,358us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(25,877)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Investing activities    
Purchases of property and equipment (25,067)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(23,636)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Investment in businesses (1,000)us-gaap_PaymentsToAcquireEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(124)us-gaap_PaymentsToAcquireEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Acquisition of businesses, net of cash acquired   (375)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash used in investing activities (26,067)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(24,135)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Financing activities    
Principal payments on other debt (103)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
(80)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Intercompany 14,369sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
50,154sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash provided by (used in) financing activities 14,266us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
50,074us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Net increase (decrease) in cash and cash equivalents 557us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
62us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Cash and cash equivalents at beginning of period 2,454us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
3,098us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Cash and cash equivalents at end of period 3,011us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
3,160us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_GuarantorSubsidiariesMember
Select | Reportable legal entities | Non-Guarantor Subsidiaries    
Operating activities    
Net income 5,431us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
4,002us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Distributions from unconsolidated subsidiaries 28us-gaap_EquityMethodInvestmentDividendsOrDistributions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Depreciation and amortization 2,591us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
2,258us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Provision for bad debts 3,197us-gaap_ProvisionForDoubtfulAccounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,701us-gaap_ProvisionForDoubtfulAccounts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Equity in earnings of unconsolidated subsidiaries (21)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(21)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Loss from disposal of assets   115us-gaap_GainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Accounts receivable (13,460)us-gaap_IncreaseDecreaseInAccountsReceivable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(7,354)us-gaap_IncreaseDecreaseInAccountsReceivable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Other current assets 234us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
858us-gaap_IncreaseDecreaseInOtherCurrentAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Other assets 204us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(17)us-gaap_IncreaseDecreaseInOtherOperatingAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Accounts payable (752)us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(664)us-gaap_IncreaseDecreaseInAccountsPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Accrued expenses 693us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(2,488)us-gaap_IncreaseDecreaseInAccruedLiabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by (used in) operating activities (1,855)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,610)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Investing activities    
Purchases of property and equipment (1,329)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,492)us-gaap_PaymentsToAcquireProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Acquisition of businesses, net of cash acquired (2,686)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net cash used in investing activities (4,015)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,492)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Financing activities    
Borrowings of other debt 96us-gaap_ProceedsFromOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Principal payments on other debt (280)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(420)us-gaap_RepaymentsOfOtherShortTermDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Intercompany 8,155sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
5,286sem_IntercompanyReallocation
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Distributions to non-controlling interests (2,425)us-gaap_PaymentsOfDividendsMinorityInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,452)us-gaap_PaymentsOfDividendsMinorityInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by (used in) financing activities 5,546us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
3,414us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net increase (decrease) in cash and cash equivalents (324)us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
312us-gaap_NetCashProvidedByUsedInContinuingOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents at beginning of period 830us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,150us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents at end of period 506us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,462us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
/ sem_LegalEntitySecondaryCategorizationAxis
= us-gaap_NonGuarantorSubsidiariesMember
Select | Eliminations    
Operating activities    
Net income (35,531)us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(34,370)us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Changes in operating assets and liabilities, net of effects from acquisition of businesses:    
Equity in earnings of subsidiaries $ 35,531sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
$ 34,370sem_IncomeLossFromSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember