Note 15. Financial Instruments and Fair Value Measurements (Tables)

3 Months Ended

Mar. 30, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	March 30, 2014		December 29, 2013
Short-Term Investments
Commercial paper	$	29,943	$	21,993
Corporate bonds		15,864		27,106
Certificates of deposit		2,598		—