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Fair Value (Assets and Liabilities at Fair Value) (Details) - USD ($)
Nov. 03, 2018
Feb. 03, 2018
Fair Value, Measurements, Recurring    
Assets, Fair Value Disclosure [Abstract]    
Trust-owned life insurance policies (at cash surrender value) $ 105,083,000 $ 102,784,000
Money market funds 55,329,000 330,649,000
Derivative financial instruments 11,056,000 37,000
Total assets 171,468,000 433,470,000
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 0 9,147,000
Total liabilities 0 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 55,329,000 330,649,000
Derivative financial instruments 0 0
Total assets 55,329,000 330,649,000
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) 105,083,000 102,784,000
Money market funds 0 0
Derivative financial instruments 11,056,000 37,000
Total assets 116,139,000 102,821,000
Liabilities, Fair Value Disclosure [Abstract]    
Derivative financial instruments 0 9,147,000
Total liabilities 0 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 253,883,000 253,250,000
ABL Facility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]    
Credit facility, amount outstanding $ 0 $ 0