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Commitments and Contingencies (Tables)
3 Months Ended
Jun. 30, 2019
Commitments and Contingencies [Abstract]  
Changes in Warranty Return Accrual
The following summarizes the changes in the warranty return accrual:

  
Three Months Ended
June 30,
 
  
2019
  
2018
 
Balance at beginning of period
 
$
19,475,000
  
$
16,646,000
 
Charged to expense/additions
  
23,185,000
   
23,893,000
 
Amounts processed
  
(26,842,000
)
  
(25,996,000
)
Balance at end of period
 
$
15,818,000
  
$
14,543,000