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ACCRUED EXPENSES (Tables)
 6 Months Ended
Jun. 30, 2015
ACCRUED EXPENSES [Abstract]  
Summary of Accrued Expenses
Accrued expenses as of June 30, 2015 and December 31, 2014 consisted of the following (in thousands):

  
June 30, 2015
  
December 31, 2014
 
Salaries and related costs
 
$
12,113
  
$
15,400
 
Group health insurance claims
  
1,945
   
2,116
 
Credit balances and overpayments due to patients and payors
  
1,856
   
1,834
 
Other
  
3,532
   
3,489
 
Total
 
$
19,446
  
$
22,839