Prepaid Expenses And Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Prepaid Expenses And Other Current Assets [Abstract]
Prepaid insurance	$ 1,266	$ 1,350
Other prepaid expenses	3,340	3,177
Federal income taxes receivable	4,865	2,680
Miscellaneous receivables, net	3,374	2,978
Deferred commissions	5,808	3,942
Deferred tax assets	4,255	3,320
Other current assets	2,317	1,291
Prepaid expenses and other current assets	$ 25,225	$ 18,738