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