Benefit Plans (Tables)

9 Months Ended

Oct. 29, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of components of net periodic benefit costs

The components of net periodic benefit costs are as follows (in thousands): 

	Three Months Ended				Nine Months Ended
	October 29, 2016		October 31, 2015		October 29, 2016		October 31, 2015
Components of net periodic benefit costs:
Service cost	$	983	$	983	$	2,950	$	2,949
Interest cost	1,920		1,684		5,759		5,052
Net actuarial loss	301		924		903		2,772
Net periodic benefit costs	$	3,204	$	3,591	$	9,612	$	10,773

 Net periodic benefit costs are included in selling, general and administrative expenses.