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Leases - ASC 842 Quantitative Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 1,365	$ 4,065
Short-term lease cost	115	251
Short-term sublease income	(30)	(60)
Total lease cost	$ 1,450	4,256
Cash paid for amounts included in the measurement of lease liabilities		1,365
Right-of-use assets obtained in exchange for new lease liabilities		$ 384
Weighted-average remaining lease term (years)	5 years 2 months 2 days	5 years 2 months 2 days
Weighted-average discount rate	6.37%	6.37%

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-SubTopic 20
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No definition available.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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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.

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- Definition

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

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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.

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

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Amount of sublease income excluding finance and operating lease expense.

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