Restructuring Plans - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1,050	$ 0	$ 3,177	$ 0
Impairment of property, plant and equipment			1,398	$ 0
United Kingdom and Australia Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	279		279
Restructuring expenses	425		425
Impairment of property, plant and equipment			1,398
Payments for restructuring	649		703
United Kingdom and Australia Restructuring Plan | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve					$ 557
Strategic Business Initiative | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 797		$ 797