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COVID-19 PANDEMIC AND CARES ACT (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2020
USD ($)
Intallment
Aug. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
COVID-19 [Abstract]      
Number of installments used to allocated funds to schools | Intallment 2    
Total amount expected to be received under CARES Act $ 27,400    
Emergency grants received in first installment under CARES Act 13,700    
Emergency grants distributed to students under CARES Act 11,100    
Emergency grants excepted to be distributed under the CARES Act 2,626   $ 0
Emergency grants received in second installment under CARES Act 13,200    
Reimbursed amount of permitted expenses 1,300    
Deferred payments under CARES Act $ 1,500    
Subsequent Event [Member]      
COVID-19 [Abstract]      
Emergency grants remaining amount received under CARES Act   $ 500