Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Income Taxes [Line Items]
Income tax benefits	$ (17,000)	$ (3,011,000)	$ (1,184,000)	$ (5,570,000)
Tax benefit from release of certain unrecognized tax benefit liabilities due to lapse of statutes of limitation	213,000		213,000
Discrete income tax charges for accrued withholding tax in Singapore	147,000		231,000
Income tax benefit to bad debt write off				1,100,000
Income tax benefit from valuation allowance				108,000
Income tax benefit refunds received				188,000
Discrete income tax charge related to the gain on sale of mainframe technology				$ 554,000
Foreign Tax Authority
Income Taxes [Line Items]
Tax holiday ending years			2015