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Leasehold Improvement (Tables)
3 Months Ended
Mar. 31, 2019
Leases [Abstract]  
Schedule of leasehold improvement, net
   March 31, 2019   December 31, 2018 
         
Leasehold improvements   2,992   $2,992 
Less accumulated amortization   (2,842)   (2,693)
Leasehold improvements - net  $150   $299