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ACCRUED EXPENSES (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Payables and Accruals [Abstract]    
Salaries and related costs $ 13,383 $ 9,414
Group health insurance claims 1,771 2,276
Credit balances due to patients and payors 3,507 1,472
Other 4,555 3,434
Total $ 23,216 $ 16,596