Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Income Taxes
Federal net operating loss carry forward benefits	$ 22,671	$ 22,675
State net operating loss carry forward benefit	2,206	2,696
Expiration in the year 2025
Income Taxes
Federal net operating loss carry forward benefits	3,300
Expiration in the year 2026
Income Taxes
Federal net operating loss carry forward benefits	1,100
Expiration in the year 2027
Income Taxes
Federal net operating loss carry forward benefits	1,700
Expiration in the year 2028
Income Taxes
Federal net operating loss carry forward benefits	3,600
Expiration in the year 2029
Income Taxes
Federal net operating loss carry forward benefits	11,100
Expiration in the year 2030
Income Taxes
Federal net operating loss carry forward benefits	1,600
Expiration in the year 2031
Income Taxes
Federal net operating loss carry forward benefits	100
Expiration in the year 2032
Income Taxes
Federal net operating loss carry forward benefits	200
Expiration in the year 2013 through 2020
Income Taxes
State net operating loss carry forward benefit	700
Expiration in the year 2021 and beyond
Income Taxes
State net operating loss carry forward benefit	$ 1,500