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ACCRUED EXPENSES (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Salaries and related costs $ 18,815 $ 21,726
Credit balances due to patients and payors 5,195 7,293
Group health insurance claims 3,083 3,124
Other 4,253 6,350
Total $ 31,346 $ 38,493