Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum payments under the non-cancelable operating leases consisted of the following as of December 31, 2014 (in thousands):

Period	Minimum Future Lease Payments
2015	$	3,193
2016	2,658
2017	2,594
2018	2,325
2019	579
Thereafter	470
Total	$	11,819

Product warranty activities [Roll Forward]

Changes in the Company’s warranty reserve in the periods as indicated were as follows (in thousands):

	Years Ended December 31,
	2014			2013			2012
Balance at beginning of period	$	10,856		$	11,762		$	12,104
Warranty charged to cost of revenue	3,394			4,350			4,701
Utilization of warranty	(4,697		)	(5,256		)	(5,043		)
Balance at end of period	$	9,553		$	10,856		$	11,762