Revenue from Contracts with Customers - Contract Assets And Liabilities (Details) $ in Thousands	3 Months Ended
Apr. 30, 2018 USD ($)
Contract Assets:
Unbilled revenue - current	$ 930
Unbilled revenue - non-current	0
Total unbilled revenue	930
Contract Liabilities:
Deferred revenue & customer deposits - current	302
Deferred revenue & customer deposits - non-current	10
Total deferred revenue & customer deposits	$ 312
Minimum
Contract With Customers [Line Items]
Contract with customers, turn over period	3 months
Maximum
Contract With Customers [Line Items]
Contract with customers, turn over period	6 months

[Line Items] for Contract With Customers [Table]

No definition available.

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- Definition

Contract With Customers, Turn Over Period

+ References

No definition available.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 270
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-Paragraph 1A
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+ Details

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- References

No definition available.

+ Details

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

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- Definition

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

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- References

No definition available.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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