Inventory (Tables)
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of inventory
    June 30,     December 31,  
    2019     2018  
Productive material, work in process and supplies   $ 1,309     $ 92  
Finished product, including service parts, etc.     3,820       2,174  
Total inventories     5,129       2,266  
Reserve for obsolescence     (491 )     (671 )
Total inventories, net   $ 4,638     $ 1,595