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Product Warranty (Tables)
3 Months Ended
Mar. 31, 2021
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, 2021, and 2020, is summarized in the following table:
Three Months Ended March 31,
20212020
Beginning balance$$
Accrued to expense— 
Payments made— (1)
Total warranty reserves
Current portion of warranty reserves (included in Other current liabilities)(2)(2)
Long-term portion of warranty reserves (included in Other long-term liabilities)$$