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Product Warranties (Tables)
3 Months Ended
Sep. 30, 2018
Product Warranties Disclosures [Abstract]  
Product Warranties
Changes in the Company’s product warranty liability, which is included in accrued expenses on the unaudited condensed consolidated balance sheets, were as follows: 
 
 
Three Months Ended
 
 
September 30, 2018
 
September 30, 2017
Beginning balance
 
$
17,217

 
$
10,050

Add: Warranty expense
 
2,916

 
3,008

          Additions for Cobalt acquisition
 

 
4,404

Less: Warranty claims paid
 
(2,134
)
 
(2,737
)
Ending balance
 
$
17,999

 
$
14,725