Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the Provision for Income Taxes (Detail)

v3.22.1
Income Taxes - Reconciliation of the Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Provision (benefit) for income taxes at federal rate $ (2,355) $ 686 $ (486)
State taxes (96) (35) 120
Charges not deductible for income tax purposes 147 158 55
Research and development tax credits (295) (172) (211)
Valuation allowance (7) 7 411
Difference in federal rate 31 156 1
Foreign withholding tax 138    
Foreign tax credit   (84)  
Foreign-derived intangible income deduction (2) (81) (95)
Global intangible low-taxed income   405 1
Net operating loss carryback   (146)  
Capital loss from sale of Energy Steel     (325)
Other (4) (1) 1
Total provision for income taxes $ (2,443) $ 893 $ 440