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Segment Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020
Segment Reporting Information [Line Items]
Long lived assets	$ 96,683		$ 96,683		$ 76,119
Switzerland
Segment Reporting Information [Line Items]
Long lived assets	4,600		4,600		2,300
United States
Segment Reporting Information [Line Items]
Long lived assets	21,600		21,600		26,500
China
Segment Reporting Information [Line Items]
Long lived assets	$ 59,600		$ 59,600		$ 36,600
Geographic Concentration | Consolidated net sales from continuing operations | Switzerland
Segment Reporting Information [Line Items]
Percentage of consolidated net sales	3.00%	4.00%	3.00%	4.00%

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