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Contingencies (Tables)
 6 Months Ended
Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability
Changes in the warranty liability for the six months June 30, 2016 and 2015, are summarized below:
 
 
Six Months Ended 
 June 30,
 
 
2016
 
2015
Aggregate product warranty liability at beginning of period
 
$
268

 
$
268

Net aggregate expense (benefit) related to product warranties
 
(109
)
 
8

Aggregate reductions for payments
 
—

 
(8
)
Aggregate product warranty liability at end of period
 
$
159

 
$
268