Commitments And Contingencies (Details) (USD $)		6 Months Ended
	Jul. 01, 2012	Jul. 01, 2012 Real Property Leases, 1 To 3 Years Remaining [Member]	Jul. 01, 2012 Real Property Leases, 1 To 3 Years Remaining [Member] Maximum [Member] Y	Jul. 01, 2012 Real Property Leases, 1 To 3 Years Remaining [Member] Minimum [Member] Y	Jul. 01, 2012 Real Property Leases, 1 To 4 Years Remaining [Member]	Jul. 01, 2012 Real Property Leases, 1 To 4 Years Remaining [Member] Maximum [Member] Y	Jul. 01, 2012 Real Property Leases, 1 To 4 Years Remaining [Member] Minimum [Member] Y	Jul. 01, 2012 Southern California Region [Member] Real Property Leases, 1 To 4 Years Remaining [Member]	Jul. 01, 2012 Southern California Region [Member] Real Property Leases, 1 To 4 Years Remaining [Member] Maximum [Member]	Jul. 01, 2012 Southern California Region [Member] Real Property Leases, 1 To 4 Years Remaining [Member] Minimum [Member]	Aug. 06, 2012 Common Stock [Member] Tender Offer [Member]
Commitments And Contingencies [Line Items]
Maximum amount of lease payments remaining	$ 500,000	$ 500,000			$ 1,000,000
Secondarily liable real property leases terms, years			3	1		4	1		4	1
Secondarily liable number of leases		11			8			5
Common stock purchase price											$ 13.00