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PURCHASED INTANGIBLE ASSETS | 6 Months Ended
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Jul. 31, 2018
PURCHASED INTANGIBLE ASSETS |
PURCHASED INTANGIBLE ASSETS | NOTE 7 — PURCHASED INTANGIBLE ASSETS At both July 31, and January 31, 2018, the goodwill balances related to the acquisitions of GPS, TRC and APC were $18.5 million, $13.8 million and $2.0 million, respectively. Purchased intangible assets, other than goodwill, consisted of the following elements as of July 31, and January 31, 2018:
|  |  |  | July 31, 2018 |  | January 31, |
|  | Estimated Useful Life |  | Gross Amount |  | Accumulated Amortization |  | Net Amount |  | 2018 (net amount) |
Trade names |  | 15 years-indefinite |  | $ | 8,323 |  | $ | 3,628 |  | $ | 4,695 |  | $ | 4,966 |
Process certifications |  | 7 years |  | 1,897 |  | 723 |  | 1,174 |  | 1,310 |
Customer relationships |  | 4-10 years |  | 1,346 |  | 572 |  | 774 |  | 873 |
Totals |  |  |  | $ | 11,566 |  | $ | 4,923 |  | $ | 6,643 |  | $ | 7,149 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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