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Revenue (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Revenue from Contract with Customer [Abstract]        
Revenue recognized $ 2,866 $ 1,629 $ 7,466 $ 5,440