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PURCHASED INTANGIBLE ASSETS - Goodwill and Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 01, 2021 | Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2016 | Jan. 31, 2019
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Goodwill allocated for income tax reporting purposes |  | $ 16,500 |  |  |  |
Period of amortization of goodwill for income tax purpose |  | 15 years |  |  |  |
Goodwill Impairment Loss |  | $ 0 |  |  |  |
Goodwill |  | 28,033 | $ 27,943 | $ 27,943 |  | $ 32,838
Impairment loss |  | 7,901 |  | 4,895 |  |
Payment for acquisition |  | 600 |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | 11,050 |  |  |  |
Accumulated Amortization |  | 7,728 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  | 3,322 | 4,097 |  |  |
Intangible Assets, Net (Excluding Goodwill) |  | 3,322 | 4,097 |  |  |
Additions to other intangible assets |  | 0 | 0 | 0 |  |
Additions to impairment losses |  | 0 | 0 | 0 |  |
Amortization of intangibles |  | 870 | 904 | 1,136 |  |
APC |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Percentage of goodwill acquired |  |  |  |  | 100.00% |
TRC |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Goodwill Impairment Loss |  |  | 2,800 |  |  |
Percentage of goodwill acquired |  |  |  |  | 34.00% |
APC |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 2,072
Impairment loss |  |  | 2,100 | $ 2,072 |  |
SMC |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Goodwill |  | 90 |  |  |  |
TRC. |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Excess of the fair value over the carrying value | $ 8,900 |  |  |  |  |
Goodwill |  | 9,500 | 9,500 |  |  |
LTI |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Payment for acquisition |  | $ 600 |  |  |  |
Trade Name | TRC. |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 15 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | $ 4,499 |  |  |  |
Accumulated Amortization |  | 1,849 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  | $ 2,650 | 2,949 |  |  |
Trade Name | GPS. |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 15 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | $ 3,643 |  |  |  |
Accumulated Amortization |  | $ 3,643 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  |  | 208 |  |  |
Process certifications |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 7 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | $ 1,897 |  |  |  |
Accumulated Amortization |  | 1,671 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  | $ 226 | 497 |  |  |
Customer relationships |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 10 years |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | $ 916 |  |  |  |
Accumulated Amortization |  | 565 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  | $ 351 | $ 443 |  |  |
Customer relationships | Minimum |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 10 years |  |  |  |
Customer Contracts |  |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  | 1 year |  |  |  |
Finite Lived Intangible Assets - Gross Carrying Amount |  | $ 95 |  |  |  |
Finite Lived Intangible Assets - Net Amount |  | $ 95 |  |  |  |

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