XML 47 R34.htm IDEA: XBRL DOCUMENT v3.10.0.1
Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Aug. 04, 2018
Jul. 29, 2017
Aug. 04, 2018
Jul. 29, 2017
Defined Benefit Plan Disclosure [Line Items]        
Employer contributions to pension plan $ 1,300   $ 2,600  
Components of net periodic benefit costs:        
Service cost 922 $ 873 1,844 $ 1,746
Interest cost 1,783 1,808 3,566 3,615
Net actuarial loss 132 0 264 0
Net periodic benefit costs 2,837 2,681 5,674 $ 5,361
Defined Benefit Plan, Expected Future Benefit Payment, Remainder of Year 2,535   2,535  
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 $ 264