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Income Taxes (Reconciliation of Income Tax Expense to Amount Computed at Federal Statutory Rate) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Feb. 04, 2013 | Jan. 31, 2016
Income Taxes [Abstract] |  |
Federal taxes at statutory rate |  | $ 10,073
Tax effect of earnings not subject to federal income tax due to "S" corporation status |  | (8,952)
State and local income taxes, net of federal benefit |  | 124
Impact of change in tax status |  | 94
Total income tax expense |  | $ 1,339
Federal taxes at statutory rate |  | 35.00%
Tax effect of earnings not subject to federal income tax due to "S" corporation status |  | (31.10%)
State and local income taxes, net of federal benefit |  | 0.40%
Impact of change in tax status |  | 0.30%
Total income tax expense | 40.00% | 4.60%

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