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PURCHASED INTANGIBLE ASSETS - Goodwill and Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2021 | Oct. 31, 2020 | Jan. 31, 2021
Indefinite-Lived Intangible Assets |  |  |  |  |
Goodwill | $ 27,943 | $ 27,943 | $ 27,943 | $ 27,943 | $ 27,943
Intangible Assets - Gross Carrying Amount | 10,955 |  | 10,955 |  |
Accumulated Amortization | 7,538 |  | 7,538 |  |
Intangible Assets, Net (Excluding Goodwill) | 3,417 |  | 3,417 |  | 4,097
Amortization of intangibles | 227 | $ 226 | 680 | $ 677 |
TRC |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Goodwill | 9,500 |  | $ 9,500 |  | 9,500
TRC | Trade names |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  |  | 15 years |  |
Finite Lived Intangible Assets - Gross Carrying Amount | 4,499 |  | $ 4,499 |  |
Accumulated Amortization | 1,775 |  | 1,775 |  |
Finite Lived Intangible Assets - Net Amount | 2,724 |  | $ 2,724 |  | 2,949
GPS |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Goodwill |  |  |  |  | 18,500
GPS | Trade names |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  |  | 15 years |  |
Finite Lived Intangible Assets - Gross Carrying Amount | 3,643 |  | $ 3,643 |  |
Accumulated Amortization | 3,617 |  | 3,617 |  |
Finite Lived Intangible Assets - Net Amount | 26 |  | $ 26 |  | 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 |  | $ 1,897 |  |
Accumulated Amortization | 1,604 |  | 1,604 |  |
Finite Lived Intangible Assets - Net Amount | 293 |  | $ 293 |  | 497
Customer relationships |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  |  | 10 years |  |
Finite Lived Intangible Assets - Gross Carrying Amount | 916 |  | $ 916 |  |
Accumulated Amortization | 542 |  | 542 |  |
Finite Lived Intangible Assets - Net Amount | $ 374 |  | $ 374 |  | $ 443
Customer relationships | Minimum |  |  |  |  |
Indefinite-Lived Intangible Assets |  |  |  |  |
Finite-Lived Intangible Assets - Estimated Useful Life |  |  | 10 years |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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