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COMMITMENTS - Leases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Lease, practical expedients			true
Operating leases, options to extend			true
Operating leases, options to terminate			true
Operating lease expense	$ 0.2		$ 0.5
Weighted average lease term	37 months		37 months
Weighted average discount rate	4.30%		4.30%
Costs of Revenues
Rent expense	$ 0.9		$ 3.2
Rent expense		$ 1.7		$ 9.9
Selling, General and Administrative Expenses
Rent expense	$ 0.1	$ 0.2	$ 0.5	$ 0.5

X

- Definition

The amount operating lease and short-term rental agreements expenses.

+ References

No definition available.

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X

- Definition

Indicates (true false) whether practical expedients are elected for not reassessing whether any expired or existing contract is or contains lease, lease classification for expired or existing lease, and initial direct cost for any existing lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (j)
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X

- Definition

Indicates (true false) whether lessee has option to extend operating lease.

+ References

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X

- Definition

Indicates (true false) whether lessee has option to terminate operating lease.

+ References

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X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

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-Publisher FASB
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X

- Definition

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

+ References

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X

- 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

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X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

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