Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Employee Benefit Plans Disclosure [Line Items]
Matching contribution of eligible employee compensation, percent	1.50%	1.50%	1.50%
Employer contributions to plan	$ 500,000	$ 500,000	$ 500,000
Employer contributions to Swiss Plan during fiscal 2014	700,000
Employee contributions to Swiss Plan during fiscal 2014	700,000
Estimated benefit payments, 2014	800,000
Estimated benefit payments, 2015	700,000
Estimated benefit payments, 2016	800,000
Estimated benefit payments, 2017	800,000
Estimated benefit payments, 2018	800,000
Estimated benefit payments, thereafter through 2023	6,000,000
Net periodic benefit cost	100,000	300,000	400,000
Plan assets	0
Weighted average discount rate of accumulated post-retirement benefit obligation	4.60%	3.70%	4.20%
Assumed annual rates of increase of cost of health benefits	8.50%
Assumed annual rates of decrease for cost of health benefits	0.50%
Defined benefit plan cost of health benefit, trend rate	5.00%
Defined benefit plan cost of health benefit, year that rate reaches ultimate rate	2021
Result of one percent increase in net periodic benefit cost	13,000
Result of one percent decrease in net periodic benefit cost	(13,000)
Result of one percent increase in accumulated post-retirement benefit obligation	252,000
Result of one percent decrease in accumulated post-retirement benefit obligation	(212,000)
Percentage increase (decrease) in health care cost trend rates	1.00%
Payroll liability in accrued compensation and benefits	2,400,000	2,100,000
Cash surrender value of the related life insurance policies	2,100,000	1,700,000
Aggregate intrinsic value of options exercised	400,000	200,000	600,000
Aggregate intrinsic value of options outstanding	2,400,000
Aggregate intrinsic value of options exercisable	2,100,000
Debt Securities [Member]
Employee Benefit Plans Disclosure [Line Items]
Target allocations for plan assets, Percentage	54
Real Estate Investments [Member]
Employee Benefit Plans Disclosure [Line Items]
Target allocations for plan assets, Percentage	25
Equity Securities [Member]
Employee Benefit Plans Disclosure [Line Items]
Target allocations for plan assets, Percentage	15
Cash [Member]
Employee Benefit Plans Disclosure [Line Items]
Target allocations for plan assets, Percentage	1
Alternative Investments [Member]
Employee Benefit Plans Disclosure [Line Items]
Target allocations for plan assets, Percentage	5
Swiss Plan [Member]
Employee Benefit Plans Disclosure [Line Items]
Amounts recognized in accumulated other comprehensive income related to the Swiss Plan unrecognized net actuarial gain	1,000,000
Net periodic benefit cost	972,000
Weighted average discount rate of accumulated post-retirement benefit obligation	2.30%
Employee Stock Purchase Plan [Member]
Employee Benefit Plans Disclosure [Line Items]
Percentage of fair value of common stock, common stock price	85.00%
Shares issued under Employee Stock Purchase Plan	163,120	151,812	120,240
Shares available for equity grants	322,422
Employee Stock Purchase Plan [Member] | Maximum [Member]
Employee Benefit Plans Disclosure [Line Items]
Shares for issuance under Employee Stock Purchase Plan	1,900,000
Restricted Stock Units [Member] | Maximum [Member]
Employee Benefit Plans Disclosure [Line Items]
Period in which restricted stock unit vest	4 years
Restricted Stock Units [Member] | Minimum [Member]
Employee Benefit Plans Disclosure [Line Items]
Period in which restricted stock unit vest	1 year
Equity-Based Performance Stock Units [Member]
Employee Benefit Plans Disclosure [Line Items]
Period in which restricted stock unit vest	3 years
Award measurement period	1 year
Equity-Based Performance Stock Units [Member] | Maximum [Member]
Employee Benefit Plans Disclosure [Line Items]
Common stock granted on achievement of performance goals	150.00%
Equity-Based Performance Stock Units [Member] | Minimum [Member]
Employee Benefit Plans Disclosure [Line Items]
Common stock granted on achievement of performance goals	0.00%
Unvested Stock Options [Member]
Employee Benefit Plans Disclosure [Line Items]
Pre-tax unrecognized compensation cost of unvested stock options	2,800,000
Unvested stock options expected to be recognized weighted-average period	1 year 10 months 24 days
Unvested Restricted Stock Units [Member]
Employee Benefit Plans Disclosure [Line Items]
Unvested stock options expected to be recognized weighted-average period	1 year 10 months 24 days
Pre-tax unrecognized compensation cost of unvested restricted stock units	$ 7,200,000
Employee Stock Options [Member]
Employee Benefit Plans Disclosure [Line Items]
Shares available for equity grants	1,199,077
Description of fair value to determine the price of common stock	Under our equity incentive plans, stock options may be granted to employees, consultants and outside directors to purchase a fixed number of shares of our common stock at prices not less than 100% of the fair market value at the date of grant.
Range of period in which vested stock expire	10 years
Employee Stock Options [Member] | Maximum [Member]
Employee Benefit Plans Disclosure [Line Items]
Period in which restricted stock unit vest	4 years
Employee Stock Options [Member] | Minimum [Member]
Employee Benefit Plans Disclosure [Line Items]
Period in which restricted stock unit vest	1 year