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Warranty (Tables)
 12 Months Ended
Mar. 31, 2020
Guarantees [Abstract]  
Analysis Of Changes In Liability For Product Warranties As warranty estimates are forecasts that are based on the best available information, primarily historical claims experience, costs of claims may ultimately differ from amounts provided. An analysis of changes in the liability for product warranties is as follows:
 
 
Fiscal year ended March 31,
 
 
2020
 
2019
 
2018
Balance at beginning of year
 
$
54,568

 
$
50,602

 
$
46,116

Current year provisions
 
27,622

 
23,679

 
21,706

Costs incurred
 
(25,778
)
 
(25,053
)
 
(18,820
)
Warranty reserves of acquired businesses
 
6,995

 
7,535

 
—

Foreign currency translation adjustment
 
118

 
(2,195
)
 
1,600

Balance at end of year
 
$
63,525

 
$
54,568

 
$
50,602