Restructuring Plans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 3,103	$ 0	$ 0
Impairment of property, plant, and equipment	1,408	$ 0	$ 0
United Kingdom and Australia Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	39			$ 39
Restructuring expenses	395
Impairment of property, plant, and equipment	$ 1,398
United Kingdom and Australia Restructuring Plan | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve					$ 557
Strategic Business Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring reserve				634
Strategic Business Initiative | Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve				$ 797