Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) $ in Thousands	3 Months Ended
Apr. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 727
Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets	$ 65
Weighted-average remaining lease term – operating leases	4 years 3 months
Weighted-average discount rate – operating leases	5.00%

No definition available.

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971

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-Publisher FASB
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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

+ References

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-Publisher FASB
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+ Details

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