Defined Benefit Pension Plans and Other Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	$ 113	$ 112	$ 338	$ 337
Interest cost	1,062	1,163	3,202	3,501
Expected return on plan assets	(1,446)	(1,517)	(4,341)	(4,552)
Amortization:
Losses	1,197	860	3,751	2,686
Net amortization	1,197	860	3,751	2,686
Net Periodic Benefit Cost	926	618	2,950	1,972
Other Benefits
Components of Net Periodic Benefit Cost
Service cost	209	130	628	396
Interest cost	61	55	184	171
Expected return on plan assets	0	0	0	0
Amortization:
Losses	48	25	144	78
Net amortization	48	25	144	78
Net Periodic Benefit Cost	$ 318	$ 210	$ 956	$ 645