Commitments and Contingencies (Detail) $ in Millions		1 Months Ended	3 Months Ended	5 Months Ended		6 Months Ended	8 Months Ended	10 Months Ended	27 Months Ended	74 Months Ended
	Mar. 02, 2015 Computers Residents	Jan. 18, 2016 USD ($) Claims	Mar. 31, 2017 USD ($) Agencies D	May 21, 2015	Jun. 06, 2011 Beneficiary	Jun. 27, 2016	Aug. 19, 2016	Nov. 03, 2015	Mar. 31, 2010 Beneficiary	Sep. 30, 2011 D	Jun. 30, 2016 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Health insurance retention limit			$ 0.9
Workers' compensation insurance retention limit			0.5
Professional liability insurance retention limit			$ 0.3
Corporate Integrity Agreement Term			5 years
Number Of States With Facilities | Agencies			34
Episode Of Care As Episodic Based Revenue | D			60
Computer Inventory And Data Security Reporting [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of Missing Computers and Laptops | Computers	142
Threshold of Individuals in Data Breach | Residents	500
Computer Inventory And Data Security Reporting [Member] | Minimum [Member]
Commitments And Contingencies Disclosure [Line Items]
Year of Departure	2011
Computer Inventory And Data Security Reporting [Member] | Maximum [Member]
Commitments And Contingencies Disclosure [Line Items]
Year of Departure	2014
Securities Class Action Lawsuit [Member]
Commitments And Contingencies Disclosure [Line Items]
Loss Contingency Number Of Defendants										7
Episode Of Care As Episodic Based Revenue | D										60
Securities Class Action Lawsuit [Member] | Favorable [Member]
Commitments And Contingencies Disclosure [Line Items]
Loss Contingency Number Of Defendants							2
Securities Class Action Lawsuit [Member] | Unfavorable [Member]
Commitments And Contingencies Disclosure [Line Items]
Loss Contingency Number Of Defendants							4
Securities Class Action Lawsuit [Member] | Favorable In Part [Member]
Commitments And Contingencies Disclosure [Line Items]
Loss Contingency Number Of Defendants							3
Home Health [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Care Centers | Agencies			326
Hospice [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Care Centers | Agencies			79
Hospice [Member] | South Carolina [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of beneficiaries | Beneficiary									30
Hospice [Member] | Extrapolated [Member] | South Carolina [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of beneficiaries | Beneficiary					16
Hospice [Member] | Unfavorable [Member] | South Carolina [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims		9
Recovery amount of the overpayment made to the subsidiary		$ 3.7
Recovery Amount Of Over Payment Made To Subsidiary Including Interest		$ 5.6
Recovery amount of over payment made to subsidiary including interest withheld											$ 5.7
Hospice [Member] | U.S. Department of Justice [Member] | Massachusetts [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of patients				53
Hospice [Member] | U.S. Department of Justice [Member] | Morgantown, West Virginia [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of patients								66
Hospice [Member] | U.S. Department of Justice [Member] | Parkersburg, West Virginia [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of patients						68