Reduction in Workforce - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 20, 2016	Jun. 30, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Restructuring costs		$ 600
Restructuring charges	$ 1,300		$ 1,300	$ 582	$ 1,900