Fair Value of Noncontributory Defined Benefit Retirement Plan Assets (Detail) (Noncontributory Pension Plan, USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	$ 12,945	$ 12,625	$ 11,813
Common Stock
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	7,103	6,838
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	12,945	12,625
Mutual Funds | U.S. Equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	472	504
Mutual Funds | International Equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	1,808	1,695
Mutual Funds | Bond
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	2,474	3,146
Mutual Funds | Cash
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	1,088	442
Fair Value, Inputs, Level 1 | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	7,103	6,838
Fair Value, Inputs, Level 1 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	12,945	12,625
Fair Value, Inputs, Level 1 | Mutual Funds | U.S. Equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	472	504
Fair Value, Inputs, Level 1 | Mutual Funds | International Equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	1,808	1,695
Fair Value, Inputs, Level 1 | Mutual Funds | Bond
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	2,474	3,146
Fair Value, Inputs, Level 1 | Mutual Funds | Cash
Defined Benefit Plan Disclosure [Line Items]
Defined benefit retirement plan assets, fair value	$ 1,088	$ 442