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Benefit Plans (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Compensation and Retirement Disclosure [Abstract]        
Employer contributions to pension plan $ 900   $ 1,900  
Expected employer contributions to pension plan for remainder of current fiscal year     2,100  
Components of net periodic benefit costs:        
Service cost 984 $ 983 1,967 $ 1,966
Interest cost 1,919 1,684 3,839 3,368
Net actuarial loss 301 924 602 1,848
Net periodic benefit costs $ 3,204 $ 3,591 $ 6,408 $ 7,182