Number of share based compensation plans

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Number of Independent Directors on Personnel and Compensation Committee - Personnel & Compensation Committee requires two or more independent directors from the Board of Directors to serve on the Committee.

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Number of award types: Number of award types, stock options and restricted stock units

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Share based Compensation Arrangement by Share-based Payment Award, Date of Expiration

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Exercise Period

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- Definition

Share Based Compensation Arrangement, By Share Based Payment Award, Number Of Shares Granted Based On Target Award Percenatge

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- Definition

Share Based Compensation Arrangement, By Share Based Payment Award, Perfromance Shares Target Award

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- Definition

stock unit to share conversion: defines how many shares of common stock a director receives for each restricted stock unit when the stock unit vests.

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No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Name Accounting Standards Codification
-Topic 718
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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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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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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No definition available.

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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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No definition available.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Share Based Compensation (Details) $ in Thousands	12 Months Ended
Share Based Compensation (Details) $ in Thousands	Jan. 31, 2019 USD ($) Director Award Plans shares	Jan. 31, 2018 USD ($) shares	Jan. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share based compensation plans \| Plans	2
Number of directors on Personnel and Compensation Committee \| Director	2
Number of award types \| Award	2
Granted, number of options (in shares)	55,810
Stock option vesting period	4 years
Expiration period	5 years
Intrinsic value of options exercised \| $	$ 7,568	$ 1,036	$ 0
Stock Option Awards, vested in period fair value \| $	892	$ 1,312	1,323
Total compensation cost for non-vested awards not yet recognized in the Company's statements of income \| $	$ 612
Weighted average period to recognize costs associated with non-vested awards in years	2 years 1 month 17 days
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	13,713
stock unit to share conversion	1,000
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number	105,225	87,614
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period to recognize costs associated with non-vested awards in years	1 year 9 months 18 days
Share-based compensation arrangement by share-based payment award, equity instruments other than options, aggregate intrinsic value, nonvested \| $	$ 12,219
Total unrecognized compensation cost net of estimated forfeitures \| $	3,334
Share-based compensation arrangement by share-based payment award, equity instruments other than options, aggregate intrinsic value, vested \| $	2,468	$ 685	754
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value \| $	$ 2,477	$ 678	$ 761
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number	330,325
2010 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for grant under the plan	2,000,000
Remaining shares available for grant	1,030,973
Maximum exercise period	10 years
2010 Stock Incentive Plan \| Time-vested RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	49,438
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number	166,025	146,849
2010 Stock Incentive Plan \| Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	23,213
Percentage of target award	100.00%
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number	164,300	179,729
2010 Stock Incentive Plan \| Performance-based Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares target award	0.00%
2010 Stock Incentive Plan \| Performance-based Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares target award	150.00%