Defined Benefit Pension Plans and Other Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Amortization:
Calculated value of pension assets, average future service of employees			9 years 8 months 1 day
Minimum
Amortization:
Calculated value of pension assets, average future service of employees			9 years
Maximum
Amortization:
Calculated value of pension assets, average future service of employees			9 years 8 months 1 day
Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	$ 137,000	$ 112,000	$ 275,000	$ 225,000
Interest cost	1,028,000	1,062,000	2,062,000	2,140,000
Expected return on plan assets	(1,410,000)	(1,446,000)	(2,822,000)	(2,895,000)
Amortization:
Losses	195,000	1,197,000	421,000	2,554,000
Net amortization	195,000	1,197,000	421,000	2,554,000
Net Periodic Benefit Cost (Gain)	(50,000)	925,000	(64,000)	2,024,000
Contributions required			0
Other Benefits
Components of Net Periodic Benefit Cost
Service cost	165,000	209,000	330,000	419,000
Interest cost	66,000	62,000	132,000	123,000
Expected return on plan assets	0	0	0	0
Amortization:
Losses	25,000	48,000	50,000	96,000
Net amortization	25,000	48,000	50,000	96,000
Net Periodic Benefit Cost (Gain)	$ 256,000	$ 319,000	$ 512,000	$ 638,000