Employee Benefit Plans - Schedule of Benefit Obligation, Fair Value of Plan Assets, Funded Status and Liability of Swiss Plan (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Change in plan assets
Employer contributions	$ 500,000	$ 500,000	$ 500,000
Fair value of plan assets at end of year	0
Swiss Plan [Member]
Change in plan assets
Net liability at December 28, 2013	(7,767,000)
Swiss Plan [Member] | Projected Benefit Obligation [Member]
Change in projected benefit obligation
Benefit obligation at December 31, 2012	(23,541,000)
Service cost	(841,000)
Interest cost	(398,000)
Actuarial gain	1,538,000
Participant contributions	(751,000)
Benefits paid	704,000
Foreign currency exchange adjustment	(561,000)
Benefit obligation at end of year	(23,850,000)
Change in plan assets
Participant contributions	(751,000)
Benefits paid	704,000
Foreign currency exchange adjustment	(561,000)
Swiss Plan [Member] | Change in Plan Assets [Member]
Change in projected benefit obligation
Participant contributions	751,000
Benefits paid	(704,000)
Foreign currency exchange adjustment	387,000
Change in plan assets
Fair value of plan assets at December 31, 2012	15,236,000
Return on assets, net of actuarial loss	(338,000)
Employer contributions	751,000
Participant contributions	751,000
Benefits paid	(704,000)
Foreign currency exchange adjustment	387,000
Fair value of plan assets at end of year	$ 16,083,000