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Note 9 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2020 | Jan. 31, 2019
--- | --- | ---
Intangible assets, cost | $ 507,695 | $ 375,792
Intangible assets, amortization cost | 250,739 | 199,600
Intangible assets. net | 256,956 | 176,192
Customer Relationships [Member] |  |
Intangible assets, cost | 226,514 | 177,224
Intangible assets, amortization cost | 98,241 | 82,028
Developed Technology Rights [Member] |  |
Intangible assets, cost | 262,614 | 184,641
Intangible assets, amortization cost | 142,757 | 110,051
Trade Names [Member] |  |
Intangible assets, cost | 8,582 | 7,754
Intangible assets, amortization cost | 5,124 | 4,456
Noncompete Agreements [Member] |  |
Intangible assets, cost | 9,985 | 6,173
Intangible assets, amortization cost | $ 4,617 | $ 3,065

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 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)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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