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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Feb. 03, 2019 | Feb. 01, 2020 | Feb. 02, 2019 | Feb. 03, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Incremental compensation expense from modification |  | $ 0.0 | $ 0.0 | $ 0.1
Stock option modification payable |  |  |  | $ 0.1
Options outstanding |  | 1,890,955 | 2,337,316 |
Share Based Compensation Award Tranche One |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Awards granted subsequent to offering vesting percentage on each of the first four anniversaries of the grant date |  | 25.00% | 25.00% | 25.00%
Stock Options |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Options outstanding |  | 1,890,955 |  |
Unearned non-cash stock-based option compensation |  | $ 40.8 |  |
Unearned non-cash stock-based compensation expected to recognize as expense over period |  | 2 years 6 months |  |
Service-based awards, service period |  | The awards are expensed on a straight-line basis over the requisite service period. |  |
Restricted Stock Issuances |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Awards granted subsequent to offering vesting percentage on each of the first four anniversaries of the grant date |  | 100.00% | 100.00% |
Unearned non-cash stock-based option compensation |  | $ 43.0 |  |
Unearned non-cash stock-based compensation expected to recognize as expense over period |  | 2 years 6 months |  |
Restricted stock, outstanding |  | 40,000 |  |
Percentage of shares vested if change in control |  | 100.00% |  |
Restricted Stock Issuances | Minimum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Service-based awards, service period |  | 3 years |  |
Restricted Stock Issuances | Maximum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Service-based awards, service period |  | 5 years |  |
Restricted Stock Issuances | Graded Quarter Vesting |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Service-based awards, vesting period |  | 4 years |  |
Performance Share Units |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unearned non-cash stock-based option compensation |  | $ 12.6 |  |
Unearned non-cash stock-based compensation expected to recognize as expense over period |  | 2 years 3 months 18 days |  |
Restricted stock, outstanding |  | 80,951 |  |
Service-based awards, service period | 3 years |  |  |
Service-based awards, vesting period | 3 years |  |  |
Vesting percentage on employee termination or resignation | 100.00% |  |  |
Performance Share Units | Minimum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Target award threshold range | 50.00% |  |  |
Performance Share Units | Maximum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Target award threshold range | 200.00% |  |  |
Board of Directors | Restricted Stock Issuances |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Service-based awards, vesting period |  | 3 years |  |
2006 Plan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Plan termination date |  | Apr. 12, 2016 |  |
2006 Plan | Minimum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unexercised vested options, exercisable period |  | 60 days |  |
2006 Plan | Maximum |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unexercised vested options, exercisable period |  | 180 days |  |
2013 Plan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of shares available for grant equity awards |  | 3,280,488 |  |
Make-Whole Long Term Incentive Award | Michael O’Sullivan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value |  | $ 25.0 |  |
Make-Whole Long Term Incentive Award | Michael O’Sullivan | Time Based Restricted Stock Units |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value percentage |  | 50.00% |  |
Make-Whole Long Term Incentive Award | Michael O’Sullivan | Stock Options |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value percentage |  | 50.00% |  |
Long Term Incentive Award | Michael O’Sullivan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value |  | $ 8.5 |  |
Long Term Incentive Award | Michael O’Sullivan | Time Based Restricted Stock Units |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value percentage |  | 25.00% |  |
Long Term Incentive Award | Michael O’Sullivan | Stock Options |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value percentage |  | 25.00% |  |
Long Term Incentive Award | Michael O’Sullivan | Performance Based Restricted Stock Units |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Long-term incentive grant with target grant date fair value percentage |  | 50.00% |  |

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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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