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Cash Flow Statement - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 01, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Interest paid |  |  | $ 135 | $ 8
Income taxes pad (refunded) |  |  | 1,318 | (93)
Capital expenditures |  |  | 39 | $ 86
Business combination, net cash consideration |  |  | $ 59,563 |
Issuance of treasury stock, shares |  |  | 610 |
Issuance of treasury stock, value |  |  | $ 8,964 |
Pension adjustments, net of income tax |  | $ 68 |  |
Barber-Nichols, Inc. [Member] |  |  |  |
Business combination, net cash consideration |  |  | 59,563 |
Business combination, gross cash consideration | $ 61,150 |  | 61,150 |
Net of cash acquired |  |  | $ 1,587 |

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