Restructuring Charges - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 31	$ 0
Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	31,000
Severance and other employment costs | Fiscal 2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	800
Restructuring liabilities	$ 31	$ 0