Contingencies (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

Changes in the warranty liability for the three months March 31, 2015, and 2014, are summarized below:

	Three Months Ended   March 31,
	2015			2014
Aggregate product warranty liability at beginning of period	$	268		$	596
Net aggregate expense (benefit) related to product warranties	2			(50		)
Aggregate reductions for payments	(2		)	(14		)
Aggregate product warranty liability at end of period	$	268		$	532