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Contingencies (Tables)
 3 Months Ended
Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability
Changes in the warranty liability for the three months March 31, 2017 and 2016, are summarized below:
 
 
Three Months Ended 
 March 31,
 
 
2017
 
2016
Aggregate product warranty liability at beginning of period
 
$
159

 
$
268

Net aggregate (benefit) related to product warranties
 
—

 
(109
)
Aggregate reductions for payments
 
—

 
—

Aggregate product warranty liability at end of period
 
$
159

 
$
159