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Income Taxes - Components of Difference Between Provision for Income Taxes and Amount Computed by Applying Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Income Tax Provision at Statutory Rate | $ 1,534 | $ 1,697 | $ 2,246
U.S Corporate Rate Change | 52 | 1,010 |
State Taxes, Net of Federal Tax Effect | 226 | 149 | 162
Transition Tax on Repatriated Earnings | 14 | 104 |
Capitalized Transaction Costs |  |  | 179
Unrecognized State Tax Benefits | (34) | (20) | 165
Domestic Production Deduction |  | (47) | (103)
Return to Provision Adjustment | 58 | (122) | (75)
TrojanLabel Earn Out Liability Adjustment |  | (316) |
R&D Credits | (218) | (537) | (168)
Foreign Deferred Intangible Income | (53) |  |
Other | (1) | (47) | (29)
Total | $ 1,578 | $ 1,871 | $ 2,377

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