Contingencies (Tables)

3 Months Ended

Mar. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

Changes in the warranty liability for the three months March 31, 2014, and 2013, are summarized below:

	Three Months Ended   March 31,
	2014			2013
Aggregate product warranty liability at beginning of period	$	596		$	776
Net aggregate expense related to product warranties	(50		)	(10		)
Aggregate reductions for payments	(14		)	(20		)
Aggregate product warranty liability at end of period	$	532		$	746