NOTE 4: SHORT-TERM INVESTMENTS

The following table summarizes the Company’s short-term investments (in thousands):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
As of March 29, 2013
Certificates of deposit	$	1,605	$	—	$	—		$	1,605
State, municipal and local government agencies bonds		59,137		56		(2	)		59,191
Corporate bonds		31,062		7		(22	)		31,047
Commercial paper		9,944		—		—			9,944
U.S. federal government bonds		8,003		1		(1	)		8,003

Total short-term investments	$	109,751	$	64	$	(25	)	$	109,790

As of December 31, 2012
Certificates of deposit	$	1,603	$	—	$	—		$	1,603
State, municipal and local government agencies bonds		59,009		45		(4	)		59,050
Corporate bonds		31,568		4		(10	)		31,562
Commercial paper		10,287		1		—			10,288
U.S. federal government bonds		2,003		—		—			2,003

Total short-term investments	$	104,470	$	50	$	(14	)	$	104,506

The following table summarizes the maturities of the Company’s short-term investments (in thousands):


	March 29, 2013		December 31, 2012
Less than one year	$	84,402	$	76,779
Due in 1 - 2 years		25,388		27,727

Total short-term investments	$	109,790	$	104,506

Realized gains and losses from the sale of investments for the three months ended March 29, 2013 and March 30, 2012 were not material.

Impairment of Investments. The Company monitors its investment portfolio for impairment on a periodic basis. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. A decline of fair value below amortized costs of debt securities is considered other-than temporary if the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of the entire amortized cost basis. At the present time, the Company does not intend to sell its investments that have unrealized losses in accumulated other comprehensive loss. In addition, the Company does not believe that it is more likely than not that it will be required to sell its investments that have unrealized losses in accumulated other comprehensive loss before the Company recovers the principal amounts invested. The Company believes that the unrealized losses are temporary and do not require an-other-than-temporary impairment, based on its evaluation of available evidence as of March 29, 2013.

As of March 29, 2013, there were no individual available-for-sale securities in a material unrealized loss position and the amount of unrealized losses on the total investment balance was insignificant.