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Income Taxes - Tax Effects of Temporary Differences that gave Rise to Significant Portions of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Jan. 31, 2023 | Jan. 31, 2022
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Deferred Tax Assets: |  |  |
Inventory |  | $ 2,710 | $ 2,159
Honeywell Royalty Liability |  | 3,008 | 2,655
State R&D Credits |  | 1,851 | 1,925
Share-Based Compensation |  | 620 | 593
Bad Debt |  | 180 | 213
Warranty Reserve |  | 258 | 198
Compensation Accrual |  | 248 | 322
Net Operating Loss |  | 135 | 152
ASU 842 Adjustment – Lease Liability |  | 53 | 93
Unrecognized State Tax Benefits |  | 58 | 64
Foreign Tax Credit |  | 154 | 154
Deferred Service Contract Revenue |  | 90 | 61
Section 174 Capitalization | [1] | 1,175 | 0
Other |  | 281 | 224
Deferred Tax Assets, Total |  | 10,821 | 8,813
Deferred Tax Liabilities: |  |  |
Accumulated Tax Depreciation in Excess of Book Depreciation |  | 1,037 | 455
Intangibles |  | 694 | 767
ASU 842 Adjustment – Lease Liability |  | 50 | 90
Other |  | 180 | 318
Deferred Tax Liabilities, Total |  | 1,961 | 1,630
Subtotal |  | 8,860 | 7,183
Valuation Allowance |  | (2,120) | (1,778)
Net Deferred Tax Assets |  | 6,740 | 5,405
Deferred taxes are reflected in the consolidated balance sheet as follows: |  |  |
Deferred Tax Assets |  | 6,907 | 5,591
Deferred Tax Liabilities |  | (167) | (186)
Total Net Deferred Tax Assets |  | $ 6,740 | $ 5,405
[1] | Beginning in fiscal 2023, changes to Section 174 of the Internal Revenue Code made by the Tax Cuts and Jobs Act of 2017 no longer permit an immediate deduction for research and development expenditures in the tax year that such costs are incurred. These costs are capitalized resulting in an increase in deferred tax assets of $1.2 million.

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