Note 3. Summary of Disposition (Details) - Summary of Discontinued Operation's Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 24, 2012	Jun. 30, 2013	Jun. 24, 2012
Summary of Discontinued Operation's Income (Loss) [Abstract]
Revenues		$ 76,014	$ 110	$ 151,314
Costs and expenses	(543)	73,026	523	159,678
Income before income taxes	543	2,988	(413)	(8,364)
Income tax expense		2,398		1,186
Income (loss) from discontinued operations	$ 543	$ 590	$ (413)	$ (9,550)