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Fair Value (Assets and Liabilities at Fair Value) (Details) - USD ($)
Aug. 04, 2018
Feb. 03, 2018
Fair Value, Measurements, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Trust-owned life insurance policies (at cash surrender value) $ 104,310,000 $ 102,784,000
Money market funds 25,073,000 330,649,000
Derivative financial instruments 12,343,000 37,000
Total assets 141,726,000 433,470,000
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 28,000 9,147,000
Total liabilities 28,000 9,147,000
Level 1 | Fair Value, Measurements, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Trust-owned life insurance policies (at cash surrender value) 0 0
Money market funds 25,073,000 330,649,000
Derivative financial instruments 0 0
Total assets 25,073,000 330,649,000
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 0 0
Total liabilities 0 0
Level 2 | Fair Value, Measurements, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Trust-owned life insurance policies (at cash surrender value) 104,310,000 102,784,000
Money market funds 0 0
Derivative financial instruments 12,343,000 37,000
Total assets 116,653,000 102,821,000
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 28,000 9,147,000
Total liabilities 28,000 9,147,000
Level 3 | Fair Value, Measurements, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Trust-owned life insurance policies (at cash surrender value) 0 0
Money market funds 0 0
Derivative financial instruments 0 0
Total assets 0 0
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 0 0
Total liabilities 0 0
Term Loan Facility    
Liabilities, Fair Value Disclosure [Abstract]    
Gross borrowings outstanding, carrying amount 253,250,000 253,250,000
Gross borrowings outstanding, fair value 254,200,000 253,250,000
ABL Facility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]    
Credit facility, amount outstanding $ 0 $ 0