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Revenue (Tables)
 12 Months Ended
Dec. 31, 2019
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue [Table Text Block]

For the years ended December 31, 2019 and 2018, the Company recognized revenue as follows:
 
2019
 
2018
Revenue recognized over time
$
5,724

 
$
5,765

Revenue recognized at a point in time
5,941

 
5,386

Total revenue
$
11,665

 
$
11,151
Net Contract Assets and Liabilities Net contract assets were as follows:
 
December 31, 2019
 
December 31, 2018
Contract assets included in prepaid and other current assets
$
30

 
$
16

Contract liabilities included in accrued liabilities
(5
)
 
(3
)
Contract liabilities included in other non-current liabilities
—

 
(5
)
Net contract asset
$
25

 
$
8