Note 9 - Intangible Assets (Details) - Intangible Assets - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 31, 2015
Cost
Cost	$ 232,403	$ 198,011
Accumulated amortization
Accumulated amortization	98,841	82,885
Net	133,562	115,126
Customer Relationships [Member]
Cost
Cost	107,743	97,344
Accumulated amortization
Accumulated amortization	45,853	37,956
Developed Technology Rights [Member]
Cost
Cost	117,586	93,911
Accumulated amortization
Accumulated amortization	48,295	40,326
Trade Names [Member]
Cost
Cost	4,515	4,349
Accumulated amortization
Accumulated amortization	3,128	3,130
Noncompete Agreements [Member]
Cost
Cost	2,559	2,407
Accumulated amortization
Accumulated amortization	$ 1,565	$ 1,473

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- References

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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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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