Note 4. Summary of Disposition (Details) - Summary of Discontinued Operation's Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 23, 2012	Sep. 30, 2013	Sep. 23, 2012
Summary of Discontinued Operation's Income (Loss) [Abstract]
Revenues	$ 18,491	$ 110	$ 169,805
Costs and expenses	19,527	523	179,205
Loss before income taxes	(1,036)	(413)	(9,400)
Income tax expense	2		1,188
Loss from discontinued operations	$ (1,038)	$ (413)	$ (10,588)