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Product Warranty (Tables)
 3 Months Ended
Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block] The activity in warranty reserves for the three months ended March 31, 2020 and 2019, is summarized in the following table:
 
Three Months Ended March 31,
 
2020
 
2019
Beginning balance
$
8

 
$
14

Accrued to expense
1

 
—

Payments made
(1
)
 
(1
)
Total warranty reserves
8

 
13

Current portion of warranty reserves (included in other current liabilities)
(2
)
 
(3
)
Long-term portion of warranty reserves (included in other long-term liabilities)
$
6

 
$
10