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Note 4 - Short-Term Investments (Tables)

9 Months Ended

Sep. 28, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

			Amortized Cost				Fair Value				Unrealized Gain/(Loss)
September 28, 2014
Commercial paper		$	33,962			$	33,969			$	7
Corporate bonds			13,127				13,118				(9	)
Certificates of deposit			240				240				—
Balances at September 28, 2014		$	47,329			$	47,327			$	(2	)
December 29, 2013
Commercial paper		$	21,986			$	21,993			$	7
Corporate bonds			27,113				27,106				(7	)
Balances at December 29, 2013		$	49,099			$	49,099			$	—

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Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

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