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Commitments and Contingencies (Detail)
1 Months Ended 2 Months Ended 3 Months Ended 5 Months Ended 7 Months Ended 8 Months Ended 9 Months Ended 22 Months Ended 27 Months Ended
Mar. 02, 2015
Computers
Patients
Residents
Apr. 30, 2014
Agencies
Jan. 31, 2014
Claims
Mar. 09, 2011
USD ($)
Claims
Sep. 30, 2015
USD ($)
States
Jun. 10, 2015
USD ($)
May. 21, 2015
Jun. 06, 2011
USD ($)
Beneficiary
Jul. 25, 2012
Employee
Sep. 13, 2012
Employee
Sep. 30, 2015
USD ($)
States
Nov. 10, 2009
Claims
Mar. 31, 2010
Beneficiary
Commitments and Contingencies Disclosure [Line Items]                          
Health insurance retention limit | $                     $ 900,000    
Workers' compensation insurance retention limit | $                     500,000    
Professional liability insurance retention limit | $                     $ 300,000    
Corporate Integrity Agreement Term         5 years                
Number Of States With Facilities | States         34           34    
Wage and Hour Litigation [Member] | Illinois [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of former employees who filled a putative collective and class action complaint | Employee                   1      
Wage and Hour Litigation [Member] | Connecticut [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of former employees who filled a putative collective and class action complaint | Employee                 3        
Loss Contingency, Settlement Agreement, Consideration | $           $ 8,000,000              
Loss Contingency Accrual, at Carrying Value | $         $ 8,000,000           $ 8,000,000    
Computer Inventory And Data Security Reporting [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of Individuals With Information on Missing Devices | Patients 6,909                        
Number of Missing Computers and Laptops | Computers 142                        
Threshold of Individuals in Data Breach | Residents 500                        
Percentage Of Company Devices Used 0.30%                        
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                        
Home Health [Member] | Ohio [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of claims submitted by subsidiary                       137  
Home Health [Member] | Extrapolated [Member] | Ohio [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of claims submitted by subsidiary       114                  
Recovery amount of the overpayment made to the subsidiary | $       $ 5,600,000                  
Home Health [Member] | Unfavorable [Member] | Ohio [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of claims submitted by subsidiary     28                    
Home Health [Member] | Favorable In Full [Member] | Ohio [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of claims submitted by subsidiary     76                    
Number of claims appealed     74                    
Home Health [Member] | Favorable In Part [Member] | Ohio [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of claims submitted by subsidiary     10                    
Number of claims appealed     8                    
Home Health [Member] | Frontier Litigation [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number Of Care Centers Sold | Agencies   5                      
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]                          
Recovery amount of the overpayment made to the subsidiary | $               $ 6,100,000          
Number of beneficiaries | Beneficiary               16          
Hospice [Member] | Frontier Litigation [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number Of Care Centers Sold | Agencies   4                      
Hospice [Member] | US Department of Justice [Member]                          
Commitments and Contingencies Disclosure [Line Items]                          
Number of patients             53