Note 2. Short-Term Investments

Short-term investments consist of fixed income securities with remaining maturities of greater than three months at the date of purchase. At June 30, 2013, all of our short-term investments are classified as available for sale investments and measured as level 1 instruments of the fair value measurements standard.

The following summarizes the Company’s available for sale investments at June 30, 2013:

(in thousands)	Cost		Gross unrealized gains		Gross unrealized losses		Fair value

Debt securities:
U.S. Treasury	$	26,033	$	1	$	8	$	26,026
Corporate bonds	41,331		45		67		41,309
Total	$	67,364	$	46	$	75	$	67,335

Maturities of investments were as follows:
Less than one year	$	42,597	$	4	$	17	$	42,584
Greater than one year	24,767		42		58		24,751
Total	$	67,364	$	46	$	75	$	67,335

The following summarizes the Company’s available for sale investments at December 31, 2012:

(in thousands)	Cost		Gross unrealized gains		Gross unrealized losses		Fair value
Debt securities:
U.S. Treasury	$	29,000	$	8	$	—	$	29,008
Corporate bonds	42,334		10		14		42,330
Total	$	71,334	$	18	$	14	$	71,338

Maturities of investments were as follows:
Less than one year	$	34,553	$	10	$	3	$	34,560
Greater than one year	36,781		8		11		36,778
Total	$	71,334	$	18	$	14	$	71,338