Restructuring charges (Tables)

9 Months Ended

Sep. 30, 2015

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Charges

Restructuring charges for each period were as follows (in thousands):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2015			2014		2015		2014
Employee severance and related costs	$	675		$	—	$	3,543	$	—
Facility lease termination costs		1,127			—		1,127		—
Asset impairments		(21	)		—		192		—
Total restructuring and asset impairment charges	$	1,781		$	—	$	4,862	$	—

Schedule of Accrued Restructuring Activity

The accrued restructuring activity during the nine months ended September 30, 2015 was as follows:

	Employee Severance and Related Costs			Facility Lease Termination Costs			Total
Accrued restructuring balance as of December 31, 2014	$	—		$	—		$	—
Additional accruals		3,543			1,127			4,670
Cash payments		(2,934	)		(1,127	)		(4,061	)
Accrued restructuring balance as of September 30, 2015	$	609		$	—		$	609