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ACCOUNTS RECEIVABLE, NET (Tables)
 6 Months Ended
Jun. 30, 2019
Receivables [Abstract]  
Schedule of Accounts Receivable, Net
Accounts receivable consists of the following (unaudited)(in thousands):
 
 
 
June 30, 2019
 
December 31, 2018
Contract billings
 
$
2,794

 
$
3,136

Fees receivable
 
6

 
13

Retainage
 
—

 
308

Subtotal
 
2,800

 
3,457

Less – allowance for doubtful accounts
 
(301
)
 
(156
)
Accounts receivable, net
 
$
2,499

 
$
3,301