v3.19.1

Intangible assets and goodwill (Schedule of finite-lived intangible assets) (Details) - USD ($) $ in Thousands	Apr. 30, 2019	Jan. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 138,482	$ 132,827
Accumulated amortization	(57,045)	(53,161)
Intangible assets, net	81,437	79,666
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	44,328	40,583
Software
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	6,162	4,252
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,882	2,882
Acquired intangible member assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 85,110	$ 85,110

X

- Definition

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

+ References

Reference 1: 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)
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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
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-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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