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Accounting Principles and Practices (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Business Acquisition [Line Items] |  |  |
Document Fiscal Year (linked throughout the document) - not tagged | 2020 |  |
Advertising Expense | $ 1,648 | $ 2,452 | $ 2,683
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |
Balance at beginning of year | 3,634 | 3,791 |
Accrual for warranties issued | 2,723 | 3,405 |
Warranties settled | (2,548) | (3,625) |
Balance at end of year | $ 3,581 | $ 3,634 | $ 3,791

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