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Product Warranties (Tables)
12 Months Ended
Dec. 31, 2020
Product Warranties [Abstract]  
Changes in Warranty Reserve

December 31,

2020

2019

Balance at the beginning of the year

$

8,388

$

9,309

Current year provision

451

1,416

Reductions for payments, costs of repairs and other

(1,756)

(363)

Adjustments to prior warranties

(1,867)

(1,974)

Balance at the end of the year

$

5,216

$

8,388