Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Schedule Of Income Taxes [Line Items]
Cumulative GAAP domestic pretax loss	$ 29,900,000
Valuation allowance	36,064,000	24,948,000
State income taxes reduced by research tax credits	700,000	600,000	600,000
Net operating loss carryforwards, state	29,100,000
Net operating loss carryforwards, federal	16,300,000
Net operating loss carryforwards, foreign	19,100,000
Net operating loss carryforwards, expiration year	2033
Tax credit carryforwards, federal	6,300,000
Tax credit carryforwards, state	12,500,000
Accumulated undistributed earnings not provided of U.S. income taxes	17,000,000
Tax holidays expiration date	These holidays or incentives require compliance with certain conditions and expire at various dates through 2023.
Unrecognized tax benefits if recognized would reduce income tax expense and effective rate	6,200,000	2,500,000
Accrued payment of interest and penalties	1,500,000	400,000
Interest expense recognized	(100,000)	100,000	200,000
Internal Revenue Service [Member] | Ismeca [Member]
Schedule Of Income Taxes [Line Items]
Net operating loss carryforwards, federal	$ 5,100,000
Minimum [Member]
Schedule Of Income Taxes [Line Items]
Tax credit carryforwards, expiration date	Dec. 31, 2014
Time period for assessment and collection of income taxes	4 years
Maximum [Member]
Schedule Of Income Taxes [Line Items]
Tax credit carryforwards, expiration date	Dec. 31, 2033
Time period for assessment and collection of income taxes	10 years