Defined Benefit Plans (Tables)

3 Months Ended

Apr. 29, 2017

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of net periodic defined benefit pension cost related to the Company's defined benefit plans

The components of net periodic defined benefit pension cost for the three months ended April 29, 2017 and April 30, 2016 related to the Company’s defined benefit plans are as follows (in thousands):    

	Three Months Ended April 29, 2017
	SERP		Swiss Pension Plan			Total
Service cost	$	—	$	491		$	491
Interest cost	461		22			483
Expected return on plan assets	—		(49		)	(49		)
Net amortization of unrecognized prior service credit	—		(7		)	(7		)
Net amortization of actuarial losses	38		79			117
Net periodic defined benefit pension cost	$	499	$	536		$	1,035

	Three Months Ended April 30, 2016
	SERP		Swiss Pension Plan			Total
Service cost	$	—	$	379		$	379
Interest cost	460		22			482
Expected return on plan assets	—		(46		)	(46		)
Net amortization of unrecognized prior service credit	—		(7		)	(7		)
Net amortization of actuarial losses	39		47			86
Net periodic defined benefit pension cost	$	499	$	395		$	894