Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2014

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Rental Payments

The future minimum rental payments under these leases at March 31, 2014, are as follows:

Year	Amount
2014	$	647
2015		813
2016		698
2017		586
Thereafter		1,182
Future minimum lease payments	$	3,926

Changes in Warranty Reserves

Changes in the warranty reserves during the three months ended March 31, 2014 and 2013, were as follows:

	Three Months Ended March 31,
	2014			2013
Beginning balance	$	305		$	270
Provisions for warranty		12			59
Consumption of reserves		(21	)		(52	)
Ending balance	$	296		$	277