Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Dec. 31, 2009
Income Taxes [Line Items]
U.S. federal income tax rate	35.00%
Federal net operating loss carryforwards	$ 20,200,000
State net operating loss carryforwards	9,000,000
Operating loss carryforwards expiration year	Through fiscal 2024
Gross amount of unrecognized tax benefits	7,304,000	8,709,000	4,823,000	4,629,000
Unrecognized tax benefits that would impact effective tax rate	7,300,000
Unrecognized tax benefit, accrued interest	700,000	700,000
Unrecognized tax benefit, interest benefit (expense)		400,000
State and Local Jurisdiction
Income Taxes [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 1,700,000