Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
|
Reserve for Doubtful Accounts Receivable [Member] | |||
Valuation and Qualifying Accounts Disclosure [Line Items] | |||
Balance at Beginning of Period | $ 33 | $ 33 | $ 339 |
Charged to Costs and Expenses | (4) | (167) | |
Charged to Other Accounts | (13) | ||
Deductions | (126) | ||
Balance at End of Period | 29 | 33 | 33 |
Product Warranty Liability [Member] | |||
Valuation and Qualifying Accounts Disclosure [Line Items] | |||
Balance at Beginning of Period | 359 | 366 | 493 |
Charged to Costs and Expenses | 344 | 62 | 234 |
Charged to Other Accounts | (85) | ||
Deductions | (77) | (69) | (276) |
Balance at End of Period | $ 626 | $ 359 | 366 |
Restructuring Reserve [Member] | |||
Valuation and Qualifying Accounts Disclosure [Line Items] | |||
Balance at Beginning of Period | 18 | ||
Deductions | $ (18) |