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ACCOUNTS AND OTHER RECEIVABLES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
ACCOUNTS AND OTHER RECEIVABLES [Abstract]    
Trade receivables $ 18,056 $ 16,470
Due from employees 41 430
Allowance for doubtful accounts and commission adjustments (4,872) (4,159)
Accounts and other receivables, net $ 13,225 $ 12,741