Percentage increase in number of shares reserved for future issuance.

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

+ References

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB
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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Percentage of vesting of award under share-based payment arrangement.

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-Publisher FASB
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Equity-based compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Jun. 30, 2019	Jan. 31, 2018	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value	$ 32,060	$ 517
Unrecognized compensation cost, stock options	4,673		$ 4,673
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	673	653	$ 1,258	$ 1,242
Weighted average remaining expense term			2 years 3 months 25 days
Incremental expense	$ 186		$ 224
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	855,873		855,873
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term			7 years
Vesting term			4 years
Stock-based compensation expense	$ 2,561	804	$ 4,801	804
Weighted average remaining expense term			3 years 8 months 19 days
RSU's granted (in shares)	59,818		575,194
Unrecognised compensation costs	$ 33,713		$ 33,713
Restricted Stock Units (RSUs) \| Vital Score Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	8	$ 10	17	$ 21
Unrecognised compensation costs	$ 74		$ 74
Restricted Stock Units (RSUs) \| Share-based Payment Arrangement, Year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest option			10.00%
Restricted Stock Units (RSUs) \| Share-based Payment Arrangement, Year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest option			20.00%
Restricted Stock Units (RSUs) \| Share-based Payment Arrangement, Year 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest option			30.00%
Restricted Stock Units (RSUs) \| Share-based Payment Arrangement, Year 4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest option			40.00%
2006 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)							4,424,986
2018 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)						3,048,490
2019 Stock Option and Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for future issuance (in shares)					2,139,683
Percentage increase in number of shares reserved			5.00%
Number of shares available for grant (in shares)	4,073,051		4,073,051
2019 Stock Option and Incentive Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term			10 years
Vesting term			4 years
Percentage of vest option			25.00%