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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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