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Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 30, 2021 USD ($) Store $ / shares | Jan. 30, 2021 USD ($) | Oct. 31, 2020 USD ($) $ / shares | Aug. 01, 2020 USD ($) | May 02, 2020 USD ($) | Oct. 30, 2021 USD ($) Store $ / shares | Oct. 31, 2020 USD ($) $ / shares | Jun. 11, 2021 USD ($) | Apr. 30, 2020 USD ($) | Apr. 16, 2020 USD ($) | Mar. 17, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of stores operated | Store | 832 |  |  |  |  | 832 |  |  |  |  |
Medical benefit premiums paid during period furloughed | 100.00% |  |  |  |  | 100.00% |  |  |  |  |
Decrease salary of executive leadership team |  |  |  |  |  | 50.00% |  |  |  |  |
Inventory markdown reserve |  |  |  |  | $ 271,900 |  |  |  |  |  |
Long term debt | $ 1,614,645 | $ 1,927,770 | $ 2,169,495 |  |  | $ 1,614,645 | $ 2,169,495 |  |  |  |
Accumulated earnings (deficit) | 292,656 | (11,702) | (167,696) |  |  | 292,656 | (167,696) |  |  |  |
Deferred tax liabilities | $ 211,710 | 199,850 | $ 204,745 |  |  | $ 211,710 | $ 204,745 |  |  |  |
Diluted net income per share | $ / shares | $ 0.20 |  | $ 0.12 |  |  | $ 4.21 | $ (5.66) |  |  |  |
Accounting Standards Update (ASU) 2020-06 | Accounting Standards Update, Adjustment |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital | $ 176,000 |  |  |  |  | $ 176,000 |  |  |  |  |
Long term debt | $ 153,000 |  |  |  |  | $ 153,000 |  |  |  |  |
Diluted net income per share | $ / shares | $ 0.08 |  |  |  |  | $ 0.20 |  |  |  |  |
Coronavirus Aid, Relief, and Economic Security Act | Prepaid and Other Current Assets |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Tax refund from carryback of federal net operating loss |  | 245,500 |  |  |  |  |  |  |  |  |
ABL senior secured revolving facility |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long Term Debt |  |  | $ 250,000 |  |  |  | $ 250,000 |  |  |  |
Repayments of debt |  | 250,000 |  | $ 150,000 |  |  |  |  |  |  |
Long-Term Debt, face amount | $ 600,000 |  |  |  |  | $ 600,000 |  |  |  |  | $ 400,000
Convertible Senior Notes |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long Term Debt | 644,627 | $ 648,311 | 640,618 |  |  | 644,627 | 640,618 |  |  |  |
Long-Term Debt, face amount | $ 805,000 |  |  |  |  | $ 805,000 |  |  | $ 805,000 | $ 805,000 |
Debt Instrument, Interest Rate, Stated Percentage | 2.25% |  |  |  |  | 2.25% |  |  | 2.25% | 2.25% |
Interest expense | $ 4,908 |  | 12,733 |  |  | $ 15,936 | 27,635 |  |  |  |
Convertible Senior Notes | Accounting Standards Update (ASU) 2020-06 | Tax Effect, Adjustment |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital | 44,100 |  |  |  |  | 44,100 |  |  |  |  |
Accumulated earnings (deficit) | 5,900 |  |  |  |  | 5,900 |  |  |  |  |
Deferred tax liabilities | $ 38,300 |  |  |  |  | $ 38,300 |  |  |  |  |
Convertible Senior Notes | Accounting Standards Update (ASU) 2020-06 | Accounting Standards Update, Adjustment |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.20% | 2.80% |  |  |  | 8.20% |  |  |  |  |
Accumulated earnings (deficit) | $ 23,000 |  |  |  |  | $ 23,000 |  |  |  |  |
Interest expense | 7,900 |  |  |  |  | 23,200 |  |  |  |  |
Senior Secured Notes |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long Term Debt |  | $ 300,000 | $ 300,000 |  |  |  | $ 300,000 |  |  |  |
Long-Term Debt, face amount | $ 300,000 |  |  |  |  | $ 300,000 |  | $ 300,000 |  | $ 300,000 |
Debt Instrument, Interest Rate, Stated Percentage | 6.25% |  |  |  |  | 6.25% |  |  |  | 6.25% |

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