Benefit Plans (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
May 04, 2019 |
May 05, 2018 |
|
| Defined Benefit Plan Disclosure [Line Items] | ||
| Employer contributions to pension plan | $ 1,400 | |
| Components of net periodic benefit costs: | ||
| Service cost | 905 | $ 922 |
| Interest cost | 1,917 | 1,783 |
| Net actuarial loss | 0 | |
| Net periodic benefit costs | 2,822 | 2,837 |
| Defined Benefit Plan, Expected Future Benefit Payment, Remainder of Year | 4,039 | |
| 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 | $ 0 | $ 132 |