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Revenue (Details Textual) | 6 Months Ended
--- | ---
Jul. 31, 2018 USD ($)
Disaggregation Of Revenue [Line Items] |
Cumulative effect on retained earnings | $ 724,000
ASU 2014-09 |
Disaggregation Of Revenue [Line Items] |
Cumulative effect on retained earnings | $ 700,000
Revenue recognition, cloud service and app update estimated period | 2 years
Contract costs to obtain or fulfill | $ 0
Practical expedients and exemptions, financing component [true/false] | true

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- Definition Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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