$AMED
AMEDISYS INC Stock $amed

$amed Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000089626219000004 Filed on February 28, 2019

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$398.0M	$373.7M	$374.9M
YoY Change	8.65%	3.35%	3.94%
Cost Of Revenue	$239.2M	$227.3M	$220.5M
YoY Change	12.51%	7.15%	6.8%
Gross Profit	$158.7M	$146.4M	$154.4M
YoY Change	3.25%	-2.07%	0.13%
Gross Profit Margin	39.87%	39.18%	41.18%
Selling, General & Admin	$123.7M	$118.9M	$120.9M
YoY Change	-5.36%	-8.47%	-7.64%
% of Gross Profit	77.95%	81.22%	78.3%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$4.000M	$4.100M	$4.600M
YoY Change	-20.0%	-22.64%	-6.12%
% of Gross Profit	2.52%	2.8%	2.98%
Operating Expenses	$127.7M	$123.0M	$125.5M
YoY Change	-5.9%	-8.96%	-7.65%
Operating Profit	$31.00M	$23.37M	$240.0K
YoY Change	72.22%	62.78%	-98.69%
Interest Expense	-$1.100M	$1.335M	$1.197M
YoY Change	-375.0%	-36.43%	-233.0%
% of Operating Profit	-3.55%	5.71%	498.75%
Other Income/Expense, Net	$2.500M	$652.0K	$2.326M
YoY Change	316.67%	-83.0%	232.29%
Pretax Income	$29.10M	$24.03M	$2.566M
YoY Change	99.32%	32.05%	-85.81%
Income Tax	$11.40M	$9.364M	-$1.963M
% Of Pretax Income	39.18%	38.98%	-76.5%
Net Earnings	-$3.800M	$14.60M	$4.500M
YoY Change	-142.7%	28.07%	-57.94%
Net Earnings / Revenue	-0.95%	3.91%	1.2%
Basic Earnings Per Share	-$0.11	$0.43	$0.13
Diluted Earnings Per Share	-$0.11	$0.42	$0.13
COMMON SHARES
Basic Shares Outstanding		33.84M shares	33.64M shares
Diluted Shares Outstanding		34.36M shares	34.33M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$86.40M	$66.10M	$59.20M
YoY Change	186.09%	642.7%	492.0%
Cash & Equivalents	$86.36M	$66.11M	$59.16M
Short-Term Investments
Other Short-Term Assets	$16.27M	$24.70M	$40.60M
YoY Change	43.96%	12.27%	134.68%
Inventory
Prepaid Expenses	$7.329M
Receivables	$201.2M	$177.4M	$173.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$311.2M	$268.2M	$273.1M
YoY Change	44.78%	38.68%	52.14%
LONG-TERM ASSETS
Property, Plant & Equipment	$31.10M	$32.70M	$34.40M
YoY Change	-15.95%	-23.95%	-22.87%
Goodwill	$319.9M
YoY Change	10.73%
Intangibles	$46.10M
YoY Change	-1.28%
Long-Term Investments
YoY Change
Other Assets	$49.10M	$140.1M	$139.1M
YoY Change	27.53%	-8.73%	-12.46%
Total Long-Term Assets	$502.3M	$531.3M	$532.8M
YoY Change	-3.23%	0.57%	0.23%
TOTAL ASSETS
Total Short-Term Assets	$311.2M	$268.2M	$273.1M
Total Long-Term Assets	$502.3M	$531.3M	$532.8M
Total Assets	$813.5M	$799.5M	$805.9M
YoY Change	10.82%	10.78%	13.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$25.38M	$22.82M	$29.10M
YoY Change	-16.38%	-31.07%	-17.09%
Accrued Expenses	$89.10M	$83.52M	$188.1M
YoY Change	40.79%	-41.96%	25.65%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$10.60M	$9.400M	$8.100M
YoY Change	103.85%	80.77%	62.0%
Total Short-Term Liabilities	$215.1M	$201.9M	$225.3M
YoY Change	18.59%	10.81%	18.71%
LONG-TERM LIABILITIES
Long-Term Debt	$78.20M	$80.50M	$83.20M
YoY Change	-10.94%	-9.45%	-7.04%
Other Long-Term Liabilities	$3.791M	$3.900M	$4.300M
YoY Change	2.46%	-9.3%	7.5%
Total Long-Term Liabilities	$81.99M	$80.50M	$83.20M
YoY Change	-10.4%	-9.45%	-7.04%
TOTAL LIABILITIES
Total Short-Term Liabilities	$215.1M	$201.9M	$225.3M
Total Long-Term Liabilities	$81.99M	$80.50M	$83.20M
Total Liabilities	$297.1M	$286.3M	$313.8M
YoY Change	8.86%	3.62%	12.36%
SHAREHOLDERS EQUITY
Retained Earnings	$204.0K
YoY Change	-100.67%
Common Stock	$568.8M	$561.4M
YoY Change	5.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$53.71M	$53.23M
YoY Change	14.84%
Treasury Stock Shares	1.782M shares
Shareholders Equity	$515.3M	$512.3M	$492.1M
YoY Change
Total Liabilities & Shareholders Equity	$813.5M	$799.5M	$805.9M
YoY Change	10.82%	10.78%	13.33%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	-$3.800M	$14.60M	$4.500M
YoY Change	-142.7%	28.07%	-57.94%
Depreciation, Depletion And Amortization	$4.000M	$4.100M	$4.600M
YoY Change	-20.0%	-22.64%	-6.12%
Cash From Operating Activities	$32.20M	$10.20M	$36.20M
YoY Change	12.59%	50.0%	146.26%
INVESTING ACTIVITIES
Capital Expenditures	-$1.600M	-$1.700M	-$3.000M
YoY Change	-27.27%	-52.78%	-6.25%
Acquisitions
YoY Change
Other Investing Activities	-$9.500M	$200.0K	-$20.20M
YoY Change	115.91%	-104.88%	6633.33%
Cash From Investing Activities	-$11.10M	-$1.500M	-$23.20M
YoY Change	68.18%	-80.26%	544.44%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-800.0K	-1.800M	-2.100M
YoY Change	33.33%	800.0%	-76.4%
NET CHANGE
Cash From Operating Activities	32.20M	10.20M	36.20M
Cash From Investing Activities	-11.10M	-1.500M	-23.20M
Cash From Financing Activities	-800.0K	-1.800M	-2.100M
Net Change In Cash	20.30M	6.900M	10.90M
YoY Change	-5.14%	-790.0%	395.45%
FREE CASH FLOW
Cash From Operating Activities	$32.20M	$10.20M	$36.20M
Capital Expenditures	-$1.600M	-$1.700M	-$3.000M
Free Cash Flow	$33.80M	$11.90M	$39.20M
YoY Change	9.74%	14.42%	118.99%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016	amed	Cash Distribution To Noncontrolling Interest CashDistributionToNoncontrollingInterest	329000	USD
CY2017	amed	Cash Distribution To Noncontrolling Interest CashDistributionToNoncontrollingInterest	216000	USD
CY2018	amed	Cash Distribution To Noncontrolling Interest CashDistributionToNoncontrollingInterest	1090000	USD
CY2017Q4	amed	Charity Care CharityCare	1500000	USD
CY2018Q4	amed	Charity Care CharityCare	1700000	USD
CY2018Q4	amed	Common Stock Shares Authorized For Issuance To Employee Stock Purchase Plan CommonStockSharesAuthorizedForIssuanceToEmployeeStockPurchasePlan	1377017	shares
CY2018Q4	amed	Consolidated Interest Coverage Ratio ConsolidatedInterestCoverageRatio	59.9
CY2014Q2	amed	Corporate Integrity Agreement Term CorporateIntegrityAgreementTerm	P5Y
CY2017Q4	amed	Deferred Compensation Plan Liability DeferredCompensationPlanLiability	1900000	USD
CY2018Q4	amed	Deferred Compensation Plan Liability DeferredCompensationPlanLiability	1300000	USD
CY2017Q4	amed	Deferred Tax Assets Goodwill And Intangible Assets1 DeferredTaxAssetsGoodwillAndIntangibleAssets1	26000000	USD
CY2018Q4	amed	Deferred Tax Assets Goodwill And Intangible Assets1 DeferredTaxAssetsGoodwillAndIntangibleAssets1	14700000	USD
CY2017Q4	amed	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Workers Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsWorkersCompensation	7900000	USD
CY2018Q4	amed	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Workers Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsWorkersCompensation	8300000	USD
CY2016	amed	Defind Contribution Plan Maximum Annual Match Per Employee Salary Percentage DefindContributionPlanMaximumAnnualMatchPerEmployeeSalaryPercentage	0.06
CY2017	amed	Defind Contribution Plan Maximum Annual Match Per Employee Salary Percentage DefindContributionPlanMaximumAnnualMatchPerEmployeeSalaryPercentage	0.06
CY2018	amed	Defind Contribution Plan Maximum Annual Match Per Employee Salary Percentage DefindContributionPlanMaximumAnnualMatchPerEmployeeSalaryPercentage	0.06
CY2016	amed	Defined Contribution Plan Employee Contribution For Employee Matching Program DefinedContributionPlanEmployeeContributionForEmployeeMatchingProgram	1.00	USD
CY2017	amed	Defined Contribution Plan Employee Contribution For Employee Matching Program DefinedContributionPlanEmployeeContributionForEmployeeMatchingProgram	1.00	USD
CY2018	amed	Defined Contribution Plan Employee Contribution For Employee Matching Program DefinedContributionPlanEmployeeContributionForEmployeeMatchingProgram	1.00	USD
CY2016	amed	Defined Contribution Plan Employer Matching Contribution DefinedContributionPlanEmployerMatchingContribution	0.375	USD
CY2017	amed	Defined Contribution Plan Employer Matching Contribution DefinedContributionPlanEmployerMatchingContribution	0.44	USD
CY2018	amed	Defined Contribution Plan Employer Matching Contribution DefinedContributionPlanEmployerMatchingContribution	0.44	USD
CY2016	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	19678000	USD
CY2016	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	19700000	USD
CY2017	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	17100000	USD
CY2017	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	17123000	USD
CY2018	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	13300000	USD
CY2018	amed	Depreciation And Amortization For Continuing Operations DepreciationAndAmortizationForContinuingOperations	13261000	USD
CY2016	amed	Effective Income Tax Rate Reconciliation Excess Tax Benefit Sharebased Compensation Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitSharebasedCompensationPercent	0.000
CY2017	amed	Effective Income Tax Rate Reconciliation Excess Tax Benefit Sharebased Compensation Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitSharebasedCompensationPercent	0.035
CY2018	amed	Effective Income Tax Rate Reconciliation Excess Tax Benefit Sharebased Compensation Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitSharebasedCompensationPercent	0.016
CY2018	amed	Episode Of Care As Episodic Based Revenue Duration EpisodeOfCareAsEpisodicBasedRevenueDuration	P60D
CY2016	amed	Equity Impact Of Increase Decrease In Assets Of Equity Method Investment EquityImpactOfIncreaseDecreaseInAssetsOfEquityMethodInvestment	405000	USD
CY2017	amed	Equity Impact Of Increase Decrease In Assets Of Equity Method Investment EquityImpactOfIncreaseDecreaseInAssetsOfEquityMethodInvestment	-146000	USD
CY2018	amed	Equity Impactof Repurchaseof Noncontrolling Interest EquityImpactofRepurchaseofNoncontrollingInterest	361000	USD
CY2017	amed	Estimated Insurance Excluding Long Term Portion EstimatedInsuranceExcludingLongTermPortion	46500000	USD
CY2018	amed	Estimated Insurance Excluding Long Term Portion EstimatedInsuranceExcludingLongTermPortion	46500000	USD
CY2017	amed	Estimated Insurance Long Term Portion EstimatedInsuranceLongTermPortion	1200000	USD
CY2018	amed	Estimated Insurance Long Term Portion EstimatedInsuranceLongTermPortion	1100000	USD
CY2017	amed	Estimated Insurance Total EstimatedInsuranceTotal	47700000	USD
CY2018	amed	Estimated Insurance Total EstimatedInsuranceTotal	47600000	USD
CY2018Q4	amed	Hospice Cost Of Revenue HospiceCostOfRevenue	9900000	USD
CY2016	amed	Hospice Medicare Revenue Rate Accounted For Routine Care HospiceMedicareRevenueRateAccountedForRoutineCare	0.97
CY2017	amed	Hospice Medicare Revenue Rate Accounted For Routine Care HospiceMedicareRevenueRateAccountedForRoutineCare	0.97
CY2017Q4	amed	Estimated Medicare Cap Liability EstimatedMedicareCapLiability	900000	USD
CY2018Q4	amed	Estimated Medicare Cap Liability EstimatedMedicareCapLiability	1700000	USD
CY2018	amed	First Threshold Of Therapy Services Required FirstThresholdOfTherapyServicesRequired	6	visit
CY2017	amed	Health Insurance HealthInsurance	14100000	USD
CY2018	amed	Health Insurance HealthInsurance	12400000	USD
CY2017Q4	amed	Health Insurance Deposits HealthInsuranceDeposits	500000	USD
CY2018Q4	amed	Health Insurance Deposits HealthInsuranceDeposits	500000	USD
CY2018	amed	Health Insurance Retention Limit HealthInsuranceRetentionLimit	1000000	USD
CY2018	amed	Historical Collection Rate From Medicare HistoricalCollectionRateFromMedicare	0.99
CY2017Q4	amed	Hospice Cost Of Revenue HospiceCostOfRevenue	9100000	USD
CY2018	amed	Hospice Medicare Revenue Rate Accounted For Routine Care HospiceMedicareRevenueRateAccountedForRoutineCare	0.97
CY2016	amed	Income Tax Effects Allocated To Interest Expense IncomeTaxEffectsAllocatedToInterestExpense	-100000	USD
CY2017	amed	Income Tax Effects Allocated To Interest Expense IncomeTaxEffectsAllocatedToInterestExpense	0	USD
CY2018	amed	Income Tax Effects Allocated To Interest Expense IncomeTaxEffectsAllocatedToInterestExpense	100000	USD
CY2016	amed	Increase Decrease In Assets Of Equity Method Investment IncreaseDecreaseInAssetsOfEquityMethodInvestment	405000	USD
CY2017	amed	Increase Decrease In Assets Of Equity Method Investment IncreaseDecreaseInAssetsOfEquityMethodInvestment	0	USD
CY2018	amed	Increase Decrease In Assets Of Equity Method Investment IncreaseDecreaseInAssetsOfEquityMethodInvestment	0	USD
CY2017Q4	amed	Lease Liability LeaseLiability	900000	USD
CY2018Q4	amed	Lease Liability LeaseLiability	300000	USD
CY2017Q4	amed	Legal And Other Settlements LegalAndOtherSettlements	6400000	USD
CY2018Q4	amed	Legal And Other Settlements LegalAndOtherSettlements	13000000	USD
CY2018	amed	Low Utilization Payment Adjustment Number Of Visits LowUtilizationPaymentAdjustmentNumberOfVisits	4	visit
CY2018	amed	Maximum Days To Submit Final Bill From Date Request For Anticipated Payment Was Paid MaximumDaysToSubmitFinalBillFromDateRequestForAnticipatedPaymentWasPaid	60	day
CY2018	amed	Maximum Days To Submit Final Bill From Start Of Episode MaximumDaysToSubmitFinalBillFromStartOfEpisode	120	day
CY2018Q4	amed	Maximum Percent Ownership For Cost Method Percent MaximumPercentOwnershipForCostMethodPercent	0.2
CY2018Q4	amed	Maximum Percent Ownership For Equity Method Percent MaximumPercentOwnershipForEquityMethodPercent	0.5
CY2018Q4	amed	Minimum Percent Ownership For Controlling Interest Percent MinimumPercentOwnershipForControllingInterestPercent	0.5
CY2018	amed	Net Service Revenue Episode Payment Rate Duration NetServiceRevenueEpisodePaymentRateDuration	P60D
CY2016	amed	Non Vested Stock And Stock Units NonVestedStockAndStockUnits	381000	shares
CY2017	amed	Non Vested Stock And Stock Units NonVestedStockAndStockUnits	319000	shares
CY2018	amed	Non Vested Stock And Stock Units NonVestedStockAndStockUnits	316000	shares
CY2018Q4	amed	Noncontrolling Interest Repurchased NoncontrollingInterestRepurchased	0.30
CY2018	amed	Number Of Individual States Subject To Income Tax NumberOfIndividualStatesSubjectToIncomeTax	50	state
CY2016	amed	Other Intangible Assets Additions OtherIntangibleAssetsAdditions	5200000	USD
CY2017	amed	Other Intangible Assets Additions OtherIntangibleAssetsAdditions	3400000	USD
CY2018	amed	Other Intangible Assets Additions OtherIntangibleAssetsAdditions	500000	USD
CY2017	amed	Other Intangibles Write Offs OtherIntangiblesWriteOffs	1300000	USD
CY2017Q4	amed	Other Miscellaneous Deposits OtherMiscellaneousDeposits	900000	USD
CY2018Q4	amed	Other Miscellaneous Deposits OtherMiscellaneousDeposits	800000	USD
CY2017Q4	amed	Patient Liability PatientLiability	5300000	USD
CY2018Q4	amed	Patient Liability PatientLiability	6300000	USD
CY2016	amed	Payments For Repurchase Of Noncontrolling Interest PaymentsForRepurchaseOfNoncontrollingInterest	0	USD
CY2017	amed	Payments For Repurchase Of Noncontrolling Interest PaymentsForRepurchaseOfNoncontrollingInterest	0	USD
CY2018	amed	Portion Of Patient Accounts Receivable Derived From Medicare PortionOfPatientAccountsReceivableDerivedFromMedicare	0.56
CY2018	amed	Payments For Repurchase Of Noncontrolling Interest PaymentsForRepurchaseOfNoncontrollingInterest	361000	USD
CY2017Q4	amed	Payroll Tax Escrow PayrollTaxEscrow	7200000	USD
CY2018Q4	amed	Payroll Tax Escrow PayrollTaxEscrow	1500000	USD
CY2018	amed	Percentage Of Patient Receivables Outstanding PercentageOfPatientReceivablesOutstanding	0.1
CY2018	amed	Percentage Of Total Reimbursement Of Outlier Payment PercentageOfTotalReimbursementOfOutlierPayment	0.1
CY2018	amed	Percentageofownershipinsubsidiaries Percentageofownershipinsubsidiaries	0.5
CY2018	amed	Percentageoftotalcombinedvotingpowerofthecompanyandoursubsidiaries Percentageoftotalcombinedvotingpowerofthecompanyandoursubsidiaries	0.1
CY2017	amed	Portion Of Patient Accounts Receivable Derived From Medicare PortionOfPatientAccountsReceivableDerivedFromMedicare	0.59
CY2017	amed	Professional Liability ProfessionalLiability	4300000	USD
CY2018	amed	Professional Liability ProfessionalLiability	4300000	USD
CY2018	amed	Professional Liability Insurance Retention Limit ProfessionalLiabilityInsuranceRetentionLimit	300000	USD
CY2017Q4	amed	Provision For Liability On Regulatory Audit ProvisionForLiabilityOnRegulatoryAudit	17400000	USD
CY2018Q4	amed	Provision For Liability On Regulatory Audit ProvisionForLiabilityOnRegulatoryAudit	17400000	USD
CY2018	amed	Rate Of Request For Anticipated Payment Submitted For Initial Episode Of Care RateOfRequestForAnticipatedPaymentSubmittedForInitialEpisodeOfCare	0.60
CY2018	amed	Rate Of Request For Anticipated Payment Submitted For Subsequent Episodes Of Care RateOfRequestForAnticipatedPaymentSubmittedForSubsequentEpisodesOfCare	0.50
CY2016	amed	Revenuebypayorclassasapercentageoftotalnetservicerevenue Revenuebypayorclassasapercentageoftotalnetservicerevenue	1.00
CY2017	amed	Revenuebypayorclassasapercentageoftotalnetservicerevenue Revenuebypayorclassasapercentageoftotalnetservicerevenue	1.00
CY2018	amed	Revenuebypayorclassasapercentageoftotalnetservicerevenue Revenuebypayorclassasapercentageoftotalnetservicerevenue	1.00
CY2018	amed	Second Threshold Of Services Required SecondThresholdOfServicesRequired	14	visit
CY2016	amed	Securities Class Action Lawsuitsettlement SecuritiesClassActionLawsuitsettlement	0	USD
CY2017	amed	Securities Class Action Lawsuitsettlement SecuritiesClassActionLawsuitsettlement	28700000	USD
CY2017	amed	Securities Class Action Lawsuitsettlement SecuritiesClassActionLawsuitsettlement	28712000	USD
CY2018	amed	Securities Class Action Lawsuitsettlement SecuritiesClassActionLawsuitsettlement	0	USD
CY2016	amed	Stock Issued During Period Value Four Zero One K Employer Match StockIssuedDuringPeriodValueFourZeroOneKEmployerMatch	6682000	USD
CY2017	amed	Stock Issued During Period Value Four Zero One K Employer Match StockIssuedDuringPeriodValueFourZeroOneKEmployerMatch	8223000	USD
CY2018	amed	Stock Issued During Period Value Four Zero One K Employer Match StockIssuedDuringPeriodValueFourZeroOneKEmployerMatch	9232000	USD
CY2016	amed	Surrendered Shares SurrenderedShares	7493000	USD
CY2017	amed	Surrendered Shares SurrenderedShares	6939000	USD
CY2018	amed	Surrendered Shares SurrenderedShares	6570000	USD
CY2017Q4	amed	Tax Cuts And Jobs Act Of2017 Transition Tax Expense Benefit Net TaxCutsAndJobsActOf2017TransitionTaxExpenseBenefitNet	21400000	USD
CY2017	amed	Tax Cutsand Jobs Actof2017 Changein Tax Rate Income Tax Expense Benefit TaxCutsandJobsActof2017ChangeinTaxRateIncomeTaxExpenseBenefit	-21400000	USD
CY2018	amed	Third Threshold Of Therapy Services Required ThirdThresholdOfTherapyServicesRequired	20	visit
CY2018Q4	amed	Total Leverage Ratio TotalLeverageRatio	0.1
CY2018	amed	Unamortized Debt Issuance Cost Amortizatin Period UnamortizedDebtIssuanceCostAmortizatinPeriod	P4Y6M0D
CY2017Q4	amed	Uncertain Tax Benefits In Long Term Obligations UncertainTaxBenefitsInLongTermObligations	0	USD
CY2018Q4	amed	Uncertain Tax Benefits In Long Term Obligations UncertainTaxBenefitsInLongTermObligations	2900000	USD
CY2017	amed	Unrecognized Tax Benefits Decreases Resulting From Change In Statutory Tax Rate UnrecognizedTaxBenefitsDecreasesResultingFromChangeInStatutoryTaxRate	1100000	USD
CY2018	amed	Unrecognized Tax Benefits Decreases Resulting From Change In Statutory Tax Rate UnrecognizedTaxBenefitsDecreasesResultingFromChangeInStatutoryTaxRate	0	USD
CY2017	amed	Wokers Compensation WokersCompensation	29300000	USD
CY2018	amed	Wokers Compensation WokersCompensation	30900000	USD
CY2017Q4	amed	Workers Compensation Deposits WorkersCompensationDeposits	400000	USD
CY2018Q4	amed	Workers Compensation Deposits WorkersCompensationDeposits	400000	USD
CY2019Q1	amed	Workers Compensation Insurance Retention Limit WorkersCompensationInsuranceRetentionLimit	1000000	USD
CY2018	amed	Workers Compensation Insurance Retention Limit WorkersCompensationInsuranceRetentionLimit	500000	USD
CY2016	amed	Write Off Of Investment WriteOffOfInvestment	196000	USD
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2017	amed	Write Off Of Investment WriteOffOfInvestment	0	USD
CY2018	amed	Write Off Of Investment WriteOffOfInvestment	0	USD
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2018	dei	Trading Symbol TradingSymbol	AMED
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	25384000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	28531000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	201196000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	188972000	USD
CY2017Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	14100000	USD
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000896262
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	32010292	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	2300000000	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	AMEDISYS INC
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	12400000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	89100000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	89104000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	99500000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	99475000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	146814000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	146800000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	95472000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	95500000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	15000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	15000	USD
CY2018	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P1Y8M12D
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	568780000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	603666000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16401000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16295000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	17887000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	7241000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	448000	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	7800000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	6500000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	7000000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	700000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	700000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	800000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	740000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	735000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	797000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	USD
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CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	30197000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	86363000	USD
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	271000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	50000	shares
CY2016Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4400000	USD
CY2016	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4400000	USD
CY2016	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4432000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1323000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1300000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017Q4	us-gaap	Assets Assets	813482000	USD
CY2018Q4	us-gaap	Assets Assets	717118000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	311156000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	224118000	USD
CY2016	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	2936000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	27502000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	20229000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	2695000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	56166000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-66134000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	35747134	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	36252280	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33964767	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	31973505	shares
CY2017Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	35000	USD
CY2018Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	36000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	37261000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30301000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	119346000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	370000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	382000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	783000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	37631000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	30683000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	120129000	USD
CY2018	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.73
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	834381000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	992863000	USD
CY2016	us-gaap	Costs And Expenses CostsAndExpenses	1361921000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	903377000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	903400000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	992900000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	1432748000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	1507430000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-500000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-2000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16400000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-600000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2100000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18500000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-100000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-100000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2100000	USD
CY2017Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	90700000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10900000	USD
CY2018Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Gross DebtIssuanceCostsLineOfCreditArrangementsGross	2400000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	22100000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	51200000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	14500000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1900000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3500000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	56100000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	56064000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	35794000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	35800000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	24547000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	24500000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52178000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52200000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20271000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20300000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2400000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	5800000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	81400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	58300000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	56100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	35800000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	80700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	57600000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2900000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	20100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	5900000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	2800000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	9000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	11200000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6900000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	5300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	5600000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	700000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	24600000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	21800000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	2100000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	3100000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	500000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	800000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4400000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	18000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	13500000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6900000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	9000000	USD
CY2016	us-gaap	Depreciation Depreciation	17200000	USD
CY2017	us-gaap	Depreciation Depreciation	14400000	USD
CY2018	us-gaap	Depreciation Depreciation	10800000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19678000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	17123000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13261000	USD
CY2017Q4	us-gaap	Due From Joint Ventures Current DueFromJointVenturesCurrent	2000000	USD
CY2018Q4	us-gaap	Due From Joint Ventures Current DueFromJointVenturesCurrent	1900000	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.11
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.80
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.99
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.64
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.11
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.98
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.96
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.55
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.244
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.389
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.620
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.265
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
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CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.002
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	2900000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	2500000	USD
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.048
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.038
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.048
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	89936000	USD
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CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6400000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6400000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4300000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	300000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1600000	USD
CY2016	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	400000	USD
CY2017	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	400000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	500000	USD
CY2017Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	26400000	USD
CY2018Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	35100000	USD
CY2016	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	4323000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	5321000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	6158000	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	7241000	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	30610000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	33050000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	400000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	0	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	0	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	0	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	200000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	600000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-582000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-714000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	503400000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	482300000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	501300000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	261700000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	288900000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	319900000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	319949000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	329480000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	329500000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	27100000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	31000000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	9600000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	733700000	USD
CY2016	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	100000	USD
CY2016	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	1419261000	USD
CY2016	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	1419300000	USD
CY2017Q1	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	364700000	USD
CY2017Q2	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	374900000	USD
CY2017Q3	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	373700000	USD
CY2017Q4	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	398000000	USD
CY2017	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	1511272000	USD
CY2018Q1	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	399300000	USD
CY2018Q2	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	411600000	USD
CY2018Q3	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	417300000	USD
CY2018Q4	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	434400000	USD
CY2018	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	1662600000	USD
CY2018	us-gaap	Health Care Organization Revenue Net Of Patient Service Revenue Provisions HealthCareOrganizationRevenueNetOfPatientServiceRevenueProvisions	1662578000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	1300000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	61566000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	80801000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	158988000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5588000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3381000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7692000	USD
CY2016	us-gaap	Income Tax Effects Allocated Directly To Equity Other IncomeTaxEffectsAllocatedDirectlyToEquityOther	-7200000	USD
CY2017	us-gaap	Income Tax Effects Allocated Directly To Equity Other IncomeTaxEffectsAllocatedDirectlyToEquityOther	-300000	USD
CY2018	us-gaap	Income Tax Effects Allocated Directly To Equity Other IncomeTaxEffectsAllocatedDirectlyToEquityOther	0	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23935000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23900000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	50118000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	50100000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38859000	USD
CY2016	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	16600000	USD
CY2017	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	49800000	USD
CY2018	us-gaap	Income Tax Expense Benefit Intraperiod Tax Allocation IncomeTaxExpenseBenefitIntraperiodTaxAllocation	38900000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	755000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	315000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14278000	USD
CY2017Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3400000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2843000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3165000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	1600000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3970000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	36000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	34672000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-12224000	USD
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-7618000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	31843000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	13524000	USD
CY2016	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-726000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	61000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	2443000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11415000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	12749000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2947000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-4231000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4940000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8679000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	162000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	281000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	502000	shares
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	44000000	USD
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46700000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46061000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	44132000	USD
CY2016	us-gaap	Interest Expense InterestExpense	5164000	USD
CY2017	us-gaap	Interest Expense InterestExpense	5031000	USD
CY2018	us-gaap	Interest Expense InterestExpense	7370000	USD
CY2016	us-gaap	Interest Paid InterestPaid	2897000	USD
CY2017	us-gaap	Interest Paid InterestPaid	2697000	USD
CY2018	us-gaap	Interest Paid InterestPaid	3522000	USD
CY2016	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	75000	USD
CY2017	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	158000	USD
CY2018	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	278000	USD
CY2017Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	26400000	USD
CY2018Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	35100000	USD
CY2016	us-gaap	Labor And Related Expense LaborAndRelatedExpense	306981000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	305938000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	316522000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	27500000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	28600000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	27800000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	297056000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	234485000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	813482000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	717118000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	215062000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	222476000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	10638000	USD
CY2018Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	550000000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	88800000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	7400000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	10600000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1600000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1612000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1600000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	7500000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	400000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1400000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	78203000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	78200000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5800000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5775000	USD
CY2017Q4	us-gaap	Loss Contingency Receivable Noncurrent LossContingencyReceivableNoncurrent	17000000	USD
CY2018Q4	us-gaap	Loss Contingency Receivable Noncurrent LossContingencyReceivableNoncurrent	14200000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	1105000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	1051000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	329000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	216000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1090000	USD
CY2016Q4	us-gaap	Minority Interest Ownership Percentage By Noncontrolling Owners MinorityInterestOwnershipPercentageByNoncontrollingOwners	0.30
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-7515000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5538000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-267424000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-52049000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-44027000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-22193000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	62259000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	105731000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	223483000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	37261000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	15100000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	4500000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	14600000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	-3800000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	30301000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	30300000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	27200000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	33300000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	31400000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	27500000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119346000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	370000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	382000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	783000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	155148000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	155100000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	4226000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	2277000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	3840000	USD
CY2016	us-gaap	Notes Assumed1 NotesAssumed1	0	USD
CY2017	us-gaap	Notes Assumed1 NotesAssumed1	0	USD
CY2018	us-gaap	Notes Assumed1 NotesAssumed1	418000	USD
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2018Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	34	state
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	57340000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	57300000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	78500000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	78524000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	78700000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	23300000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	5200000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	8500000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13200000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	18700000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	9800000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4200000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5900000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	16300000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	16268000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7349000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7300000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	3700000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	2300000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3900000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3100000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	49130000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	49100000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	54145000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	54100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2016	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	180048000	USD
CY2017	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	159980000	USD
CY2018	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	166897000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3800000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3791000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6200000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6234000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3727000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3769000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3240000	USD
CY2017Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	1900000	USD
CY2018Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	2000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4600000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12315000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12300000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	181402000	USD
CY2016	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2433000	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6939000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6570000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	35522000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	33715000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9260000	USD
CY2016	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1040000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	476000	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	7144000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15717000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10707000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6558000	USD
CY2016	us-gaap	Pension Expense PensionExpense	6875000	USD
CY2017	us-gaap	Pension Expense PensionExpense	8754000	USD
CY2018	us-gaap	Pension Expense PensionExpense	8976000	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2018Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	7329000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	7568000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	249000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	54000	USD
CY2016	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	230000	USD
CY2017	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	622000	USD
CY2018	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	715000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	37631000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	30683000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	16401000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	120129000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	16295000	USD
CY2016	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	134500000	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	138000000	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4554000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5953000	USD
CY2016	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2483000	USD
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2382000	USD
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2429000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	177900000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	124900000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31122000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31100000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29400000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29449000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5319000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	91450000	USD
CY2016	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	134500000	USD
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	USD
CY2018	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	130500000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	204000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	119550000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	17887000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.85
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2500000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	2400000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	462845	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	27.97
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3900000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9700000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	77391	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	35.95
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	163666	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	163666	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	42.48
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	66900000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	909730	shares
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	41300000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	833315	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	33.25
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	36.79
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	14.72
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	43.43
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	53.39
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	47.57
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	44.80
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	51.29
CY2018Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	72.64
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	106.22
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	99.54
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	36.59
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	55.87
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y2M1D
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	527798	shares
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	370470	shares
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	74552	shares
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	25.78
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	23.00
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	30.97
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y7M13D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y9M4D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	246442	shares
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	23.11
	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	3039200	shares
	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	3122983	shares
CY2017Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	13244	shares
CY2017Q2	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	11446	shares
CY2017Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	12276	shares
CY2017Q4	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	13323	shares
CY2018Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	10913	shares
CY2018Q2	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	8673	shares
CY2018Q3	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	6052	shares
CY2018Q4	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	7856	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	162690	shares
CY2016	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2483000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2382000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2429000	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4554000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5953000	USD
CY2015Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	75000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	481582000	USD
CY2015Q3	us-gaap	Stock Repurchase Program Expiration Date StockRepurchaseProgramExpirationDate	2016-09-06
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	515321000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	410436000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	461142000	USD
CY2018Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	30900000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	516426000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	482633000	USD
CY2015	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	39.20
CY2016	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	37.96
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1782367	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	4278775	shares
CY2015	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	116859	shares
CY2016	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	324141	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	53713000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	241685000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12315000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	181402000	USD
CY2017Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	1900000	USD
CY2018Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	3500000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4100000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2700000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2700000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	300000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	300000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33741000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34304000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33609000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33198000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33704000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32791000	shares
CY2017Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	29300000	USD
CY2018	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Reclassifications and Comparability</font></div><div style="line-height:120%;padding-top:6px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to prior periods’ financial statements in order to conform to the current period’s presentation. </font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:6px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our accounting and reporting policies conform with U.S. GAAP. In preparing the consolidated financial statements, we are required to make estimates and assumptions that impact the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0000896262-19-000004-index-headers.html	Edgar Link	pending
0000896262-19-000004-index.html	Edgar Link	pending
0000896262-19-000004.txt	Edgar Link	pending
0000896262-19-000004-xbrl.zip	Edgar Link	pending
a201810-kexhibit1010.htm	Edgar Link	pending
a201810-kexhibit1011.htm	Edgar Link	pending
a201810-kexhibit1012.htm	Edgar Link	pending
a201810-kexhibit211.htm	Edgar Link	pending
a201810-kexhibit231.htm	Edgar Link	pending
a201810-kexhibit311.htm	Edgar Link	pending
a201810-kexhibit312.htm	Edgar Link	pending
a201810-kexhibit321.htm	Edgar Link	pending
a201810-kexhibit322.htm	Edgar Link	pending
amed-20181231.xml	Edgar Link	completed
amed-20181231.xsd	Edgar Link	pending
amed-20181231_cal.xml	Edgar Link	unprocessable
amed-20181231_def.xml	Edgar Link	unprocessable
amed-20181231_lab.xml	Edgar Link	unprocessable
amed-20181231_pre.xml	Edgar Link	unprocessable
amed-20183112x10xk.htm	Edgar Link	pending
amedisysa02.jpg	Edgar Link	pending
amedisysgraph05a.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AMED
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2017 Q4 Form 10-K Financial Statement

#000089626219000004 Filed on February 28, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMED AMEDISYS INC Stock $amed

2017 Q4 Form 10-K Financial Statement

#000089626219000004 Filed on February 28, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMED
AMEDISYS INC Stock $amed