XML 84 R70.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Reconciliations of the Statutory Federal Tax Rate to the Company's Effective Income Tax Rates (Details)
4 Months Ended 12 Months Ended
Jan. 31, 2015
Jan. 30, 2016
Sep. 30, 2014
Sep. 30, 2013
Reconciliations of the statutory federal tax rate to the Company's effective income tax rates        
Statutory federal tax rate (35.00%) (35.00%) 35.00% 35.00%
State tax rate, net of federal effect (2.30%) (2.30%) 3.20% 2.70%
(Benefit) provision for uncertain income tax positions, net of federal effect (0.40%) (2.80%) 2.10% 1.30%
Settlements of uncertain income tax positions, net of federal effect     (13.00%)  
Benefit of state net operating loss carryforwards, net of federal effect, recognized based on change in tax regulations       (3.30%)
Other   1.60% (1.70%) (0.50%)
Effective income tax rate (37.70%) (38.50%) 25.60% 35.20%