Restructuring Charges - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 203	$ 0
Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	200
Restructuring and other employment costs | Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200
Restructuring liabilities	$ 203	$ 0