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Accrued Expenses (Tables)
 12 Months Ended
Dec. 31, 2018
Accrued Expenses [Abstract]  
Accrued Expenses
Accrued expenses as of December 31, 2018 and 2017 consisted of the following (in thousands):

  
December 31, 2018
  
December 31, 2017
 
Salaries and related costs
 
$
21,726
  
$
16,828
 
Credit balances due to patients and payors
  
7,293
   
4,158
 
Group health insurance claims
  
3,124
   
2,929
 
Income taxes payable
  
-
   
2,833
 
Other
  
6,350
   
6,594
 
Total
 
$
38,493
  
$
33,342