Fair Value (Assets and Liabilities at Fair Value) (Details) - USD ($)	Oct. 28, 2017	Jan. 28, 2017
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted Investments, Noncurrent	$ 101,962,000	$ 99,654,000
Assets, Fair Value Disclosure [Abstract]
Money market funds	25,071,000	94,026,000
Derivative financial instruments	1,256,000	6,042,000
Total assets	128,289,000	199,722,000
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instruments	3,553,000	492,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Liabilities, Fair Value Disclosure, Recurring	3,553,000	492,000
Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted Investments, Noncurrent	0	0
Assets, Fair Value Disclosure [Abstract]
Money market funds	25,071,000	94,026,000
Derivative financial instruments	0	0
Total assets	25,071,000	94,026,000
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instruments	0	0
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Liabilities, Fair Value Disclosure, Recurring	0	0
Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted Investments, Noncurrent	101,962,000	99,654,000
Assets, Fair Value Disclosure [Abstract]
Money market funds	0	0
Derivative financial instruments	1,256,000	6,042,000
Total assets	103,218,000	105,696,000
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instruments	3,553,000	492,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Liabilities, Fair Value Disclosure, Recurring	3,553,000	492,000
Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted Investments, Noncurrent	0	0
Assets, Fair Value Disclosure [Abstract]
Money market funds	0	0
Derivative financial instruments	0	0
Total assets	0	0
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instruments	0	0
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Liabilities, Fair Value Disclosure, Recurring	0	0
Term Loan Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross borrowings outstanding, carrying amount	268,250,000	268,250,000
Gross borrowings outstanding, fair value	266,909,000	260,551,000
ABL Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit facility, amount outstanding	$ 0	$ 0