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Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Nov. 03, 2018
Oct. 28, 2017
Nov. 03, 2018
Oct. 28, 2017
Defined Benefit Plan Disclosure [Line Items]        
Employer contributions to pension plan $ 1,400   $ 3,900  
Components of net periodic benefit costs:        
Service cost 922 $ 874 2,766 $ 2,620
Interest cost 1,783 1,807 5,349 5,422
Net actuarial loss 132 0 396 0
Net periodic benefit costs 2,837 2,681 8,511 $ 8,042
Defined Benefit Plan, Expected Future Benefit Payment, Remainder of Year 1,500   1,500  
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Components of net periodic benefit costs:        
Net actuarial loss $ 132 $ 0 $ 396