Defined Benefit Pension Plans and Other Postretirement Benefit Plans - Reconciliation of AOCI (Details) $ in Thousands	12 Months Ended
	Jan. 28, 2017 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net (gain) loss	$ (2,729)
Amortization of net actuarial loss	(3,256)
Total Recognized in Other Comprehensive Income	(5,985)
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	(3,692)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Net (gain) loss	1,226
Amortization of net actuarial loss	(125)
Total Recognized in Other Comprehensive Income	1,101
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	$ 2,216