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DEBT - Senior Credit Facilities (Details)
12 Months Ended 25 Months Ended
Jan. 06, 2017
USD ($)
Mar. 01, 2015
Quarter
Feb. 11, 2014
USD ($)
Jan. 31, 2014
USD ($)
Dec. 23, 2013
USD ($)
Jul. 31, 2013
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Jan. 31, 2016
USD ($)
Aug. 06, 2015
USD ($)
Mar. 09, 2015
Mar. 31, 2014
USD ($)
Debt Instrument [Line Items]                          
Percentage of proceeds to be used to repay debt                       75.00%  
Net proceeds used to repay credit facility             $ 64,000,000 $ 193,663,000 $ 279,703,000        
Amount of debt drawn down             467,716,000            
Home Health Business                          
Debt Instrument [Line Items]                          
Proceeds from discontinued operation                         $ 54,200,000
Civil Action                          
Debt Instrument [Line Items]                          
Legal settlement amount         $ 15,000,000         $ 15,000,000      
Second Lien Debt | Second Amendment                          
Debt Instrument [Line Items]                          
New debt permitted       $ 150,000,000.0                  
Unsecured Debt | Second Amendment                          
Debt Instrument [Line Items]                          
New debt permitted       $ 250,000,000.0                  
Percent of proceeds appropriated to credit facility       100.00%                  
Revolving Credit Facility                          
Debt Instrument [Line Items]                          
Repayments of short-term debt     $ 59,300,000         $ 17,200,000          
Repayment of long-term debt             $ 22,700,000            
Effective interest rate             8.00%            
Remaining borrowing capacity             $ 0            
Revolving Credit Facility | Letter of Credit                          
Debt Instrument [Line Items]                          
Long-term line of credit             4,600,000            
Revolving Credit Facility | Credit Facility                          
Debt Instrument [Line Items]                          
Maximum borrowing capacity           $ 75,000,000              
Net proceeds used to repay credit facility             45,300,000            
Periodic payment, principal to be paid quarterly             3,100,000            
Periodic payment, balloon payment to be paid             166,300,000            
Term Loan B Facility | Credit Facility                          
Debt Instrument [Line Items]                          
Aggregate principal debt amount           250,000,000              
Delayed Draw Term Loan B Facility | Credit Facility                          
Debt Instrument [Line Items]                          
Aggregate principal debt amount           $ 150,000,000              
Senior Credit Facilities | Eurodollar                          
Debt Instrument [Line Items]                          
Basis spread on variable rate, minimum       5.25%                  
Senior Credit Facilities | Base Rate                          
Debt Instrument [Line Items]                          
Basis spread on variable rate, minimum       4.25%                  
Senior Credit Facilities | First Amendment                          
Debt Instrument [Line Items]                          
Payments of debt restructuring costs         $ 500,000                
Senior Credit Facilities | Second Amendment | Eurodollar                          
Debt Instrument [Line Items]                          
Basis spread on variable rate       6.00%                  
Basis spread on variable rate, minimum       5.25%                  
Senior Credit Facilities | Second Amendment | Base Rate                          
Debt Instrument [Line Items]                          
Basis spread on variable rate       5.00%                  
Basis spread on variable rate, minimum       4.25%                  
Senior Credit Facilities | Third Amendment                          
Debt Instrument [Line Items]                          
Fiscal quarters used in measuring net leverage | Quarter   4                      
Senior Credit Facilities | Fourth Amendment                          
Debt Instrument [Line Items]                          
Maximum utilization of borrowing capacity under covenant                     $ 60,000,000    
Senior Credit Facilities | Credit Facility                          
Debt Instrument [Line Items]                          
Penalty interest rate increase           2.00%              
2015 Notes | Credit Facility                          
Debt Instrument [Line Items]                          
Stated interest rate               10.25%          
Priming Credit Agreement | Credit Facility | Subsequent Event                          
Debt Instrument [Line Items]                          
Aggregate principal debt amount $ 25,000,000                        
Penalty interest rate increase 2.00%                        
Stated interest rate 10.00%                        
2021 Notes                          
Debt Instrument [Line Items]                          
Aggregate principal debt amount     $ 200,000,000.0                    
Stated interest rate     8.875%                    
Proceeds from issuance of long-term debt     $ 194,500,000                    
Amount of debt drawn down             $ 196,670,000 $ 196,038,000          
Term Loan Facilities                          
Debt Instrument [Line Items]                          
Repayments of short-term debt               37,000,000          
Early repayment of senior debt     $ 135,200,000                    
Effective interest rate             6.50%            
Amount of debt drawn down             $ 210,207,000 $ 222,757,000