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Revenue Recognition - Revenue Disaggregated by Product Line and Geographic Area (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 43,818 | $ 39,873 | $ 136,463 | $ 114,091
Refining [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 7,638 | 6,497 | 21,794 | 21,940
Chemical/Petrochemical [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 4,130 | 3,927 | 14,536 | 15,606
Defense [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 24,330 | 21,687 | 72,265 | 46,342
Space [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 2,931 | 3,510 | 10,528 | 14,278
Other Commercial [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 4,789 | 4,252 | 17,340 | 15,925
Asia [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 4,016 | 4,226 | 12,898 | 12,729
Canada [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 1,116 | 557 | 3,107 | 3,261
Middle East [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 501 | 621 | 2,219 | 1,766
South America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 65 | 649 | 264 | 2,509
U.S. [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 36,822 | 33,163 | 113,567 | 91,657
All Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 1,298 | $ 657 | $ 4,408 | $ 2,169

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