Note 4. Short-Term Investments

3 Months Ended

Mar. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4.  Short-Term Investments

Short-term investments consist of commercial paper, corporate bonds and certificates of deposit which are classified as available-for-sale securities and are carried at current fair market value, with the resulting unrealized gains and losses, if any, excluded from earnings and reported, net of tax, as a separate component of shareholders' equity until realized. If the carrying value of an investment is in excess of its fair market value, an impairment charge to adjust the carrying value to the fair market value is recorded if the impairment is considered other-than-temporary. There were no other-than-temporary impairments related to declines in fair market value of short-term investments during the three months ended March 30, 2014. The Company held no short-term investments as of March 31, 2013. All short-term investments held as of March 30, 2014 have original maturity dates of twelve months or less and are classified as current assets. Short-term investments consisted of the following (in thousands):

	Amortized  Cost		Fair Value		Unrealized  Gain/(Loss)
March 30, 2014
Commercial paper	$	29,946	$	29,943	$	(3	)
Corporate bonds		15,873		15,864		(9	)
Certificates of deposit		2,600		2,598		(2	)
Balances at March 30, 2014	$	48,419	$	48,405	$	(14	)
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	$	—