Note 3. Available-for-sale Securities

The following is a summary of available-for-sale securities at March 31, 2013 (in thousands):


	March 31, 2013
	Carrying Value		Gross Unrealized Gain		Fair Value
Money market funds	$	53,569	$	0	$	53,569

Total available-for-sale securities	$	53,569	$	0	$	53,569

The following is a summary of available-for-sale securities at December 31, 2012 (in thousands):


	December 31, 2012
	Carrying Value		Gross Unrealized Gain		Fair Value
Money market funds	$	10,268	$	0	$	10,268

Total available-for-sale securities	$	10,268	$	0	$	10,268

Available-for-sale securities at March 31, 2013 and December 31, 2012 consisted of the following by original contractual maturity (in thousands):


	March 31, 2013				December 31, 2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
Due in one year or less	$	53,569	$	53,569	$	10,268	$	10,268
Due greater than three years and less than five years		0		0		0		0

Total cash equivalents and short-term investments	$	53,569	$	53,569	$	10,268	$	10,268

The Company did not record any gross realized gains from the sale or maturity of available-for-sale investments during the three months ended March 31, 2013 and 2012, respectively. The Company did not record losses on investments experiencing an other-than-temporary decline in fair value nor did it record any gross realized losses from the sale or maturity of available-for-sale investments during the three months ended March 31, 2013 and 2012.