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Revenue (Tables)
 3 Months Ended
Mar. 31, 2019
Revenue  
Schedule of amounts recorded in accrued liabilities

 

 

 

 

 

 

 

 

 

 

March 31, 

 

December 31, 

 

 

 

2019

 

2018

 

Contract liabilities

 

$

(483)

 

$

(476)

 

Revenue recognized, included in contract liabilities, in the three months ended from:

 

$
167

 

Not Applicable