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Product Warranty Reserves
 6 Months Ended
Jun. 30, 2016
Product Warranty Reserves [Abstract]  
Product Warranty Reserves
Note 8.  Product Warranty Reserves
The Company warrants its products against manufacturing defects and performance to specified standards. The warranty period and performance standards vary by market and uses of its products, but generally range from three months to one year or up to a specified number of hours of operation. The Company estimates the costs that may be incurred under its warranties and records a liability at the time product sales are recorded.  The product warranty liability is primarily based on historical claim rates, nature of claims and the associated cost.

Changes in the Company's product warranty liability for the three and six-month periods ended June 30, 2016 and 2015 are as follows:

  
Three Months Ended
 June 30,
  
Six Months Ended
 June 30,
 
  
2016
  
2015
  
2016
  
2015
 
Reserve balance, beginning of the period
 
$
10,397
  
$
10,695
  
$
9,100
  
$
10,032
 
Warranty liabilities accrued
  
4,685
   
4,316
   
8,300
   
8,462
 
Warranty liabilities settled
  
(3,212
)
  
(4,287
)
  
(5,569
)
  
(7,671
)
Other
  
(12
)
  
37
   
27
   
(62
)
Reserve balance, end of the period
 
$
11,858
  
$
10,761
  
$
11,858
  
$
10,761