Business Restructuring - Restructuring Charges (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Initial accrual	$ 557
Cash paid	(54)
Restructuring reserve as of September 30, 2018	503
Termination Costs
Restructuring Cost and Reserve [Line Items]
Initial accrual	297
Cash paid	0
Restructuring reserve as of September 30, 2018	297
Facility Exit Costs
Restructuring Cost and Reserve [Line Items]
Initial accrual	127
Cash paid	(13)
Restructuring reserve as of September 30, 2018	114
Other Costs
Restructuring Cost and Reserve [Line Items]
Initial accrual	133
Cash paid	(41)
Restructuring reserve as of September 30, 2018	$ 92