Restructuring (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)
Components of restructuring expenses and reserve
Restructuring charges	$ 738	$ 1,752
Expected additional restructuring charges	2,100	2,100
Accrued restructuring, beginning of period	1,253	1,953
Employee severance, benefits and related costs	635	1,490
Payments	(736)	(2,291)
Accrued restructuring, end of period	$ 1,152	$ 1,152