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Segment Information - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2019
Segment Reporting Information [Line Items]          
Long lived assets $ 76,079   $ 76,079   $ 78,552
United States          
Segment Reporting Information [Line Items]          
Long lived assets 26,700   26,700   29,800
China          
Segment Reporting Information [Line Items]          
Long lived assets 37,000   37,000   36,400
Switzerland          
Segment Reporting Information [Line Items]          
Long lived assets $ 1,600   $ 1,600   $ 1,700
Geographic Concentration | Consolidated net sales from continuing operations | Switzerland          
Segment Reporting Information [Line Items]          
Percentage of consolidated net sales 4.00% 3.00% 4.00% 3.00%