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v3.21.1

1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PP&E (Details) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2021 USD ($) segment | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($)
Property and equipment, net: |  |  |
Impairment losses on long-lived equipment | $ 0 | $ 0 | $ 0
Inventories |  |  |
Minimum months to determine excess inventory | 12 months |  |
Inventory write-downs | $ 466 | 343 | 1,195
Segments |  |  |
Number of operating segments | segment | 1 |  |
Accounting for stock-based compensation |  |  |
Expected life | 5 years |  |
Dividend yield (as a percent) | 0.00% |  |
Comprehensive income (loss) | $ (21,596) | (10,229) | $ 268
Income taxes |  |  |
Valuation allowance | $ 13,017 | $ 9,389 |
Minimum |  |  |
Property and equipment, net: |  |  |
Useful life, intangible assets | 5 years |  |
Maximum |  |  |
Property and equipment, net: |  |  |
Useful life, intangible assets | 15 years |  |
Software | Minimum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 3 years |  |
Software | Maximum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 5 years |  |
Computer and other equipment | Minimum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 5 years |  |
Computer and other equipment | Maximum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 10 years |  |
Building and building improvements | Minimum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 10 years |  |
Building and building improvements | Maximum |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 25 years |  |
Furniture and fixtures |  |  |
Property and equipment, net: |  |  |
Useful life, property and equipment | 7 years |  |

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