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Warranties (Tables)
 6 Months Ended
Jun. 30, 2020
Warranties [Abstract]  
Schedule Of Changes In Warranty Accrual

Three Months Ended June 30,

Six Months Ended June 30,

2020

2019

2020

2019

Beginning balance

$

9,727

$

8,633

$

9,731

$

7,970

Warranty expense provisions

2,274

2,107

4,051

3,768

Payments

(612)

(1,174)

(1,301)

(2,194)

Warranty adjustment

(168)

202

(1,260)

224

Ending balance

$

11,221

$

9,768

$

11,221

$

9,768