INVESTMENTS |
Note 8 INVESTMENTS
The following tables summarize the investments in available-for-sale securities (in thousands):
December31, 2009
Gross Amortized Costs Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value
U.S. Government and agency securities $ 1,781,674 $ 868 $ (1,825 ) $ 1,780,717
Municipal bonds 465,823 739 (3 ) 466,559
Corporate debt securities, commercial paper, and bank certificates of deposit 995,291 1,305 (1,298 ) 995,298
Corporate equity securities 2,597 2,597
Total investments in available-for-sale securities $ 3,245,385 $ 2,912 $ (3,126 ) $ 3,245,171
March31, 2010
Gross Amortized Costs Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value
U.S. Government and agency securities $ 1,610,216 $ 1,239 $ (615 ) $ 1,610,840
Municipal bonds 330,681 345 (4 ) 331,022
Corporate debt securities, commercial paper, and bank certificates of deposit 969,641 1,947 $ (373 ) 971,215
Corporate equity securities 1,331 1,331
Total investments in available-for-sale securities $ 2,911,869 $ 3,531 $ (992 ) $ 2,914,408
Reported as:
December31, 2009 March31, 2010
Short-term marketable debt securities $ 2,015,655 $ 1,911,423
Long-term marketable debt securities 1,226,919 1,001,654
Other assets 2,597 1,331
Total $ 3,245,171 $ 2,914,408
Available-for-sale securities included in cash and cash equivalents on the condensed consolidated balance sheets are not included in the table above as the gross unrealized gains and losses were immaterial for both 2009 and the three months ended March31, 2010 as the carrying value approximates fair value because of the short maturity of those instruments.
The contractual maturities of available-for-sale marketable debt securities were as follows (in thousands):
December31, 2009 March31, 2010
Due within one year $ 2,015,655 $ 1,911,423
Due after one year through five years 1,226,919 1,001,654
Total available-for-sale marketable debt securities $ 3,242,574 $ 2,913,077
The following tables show all investments in an unrealized loss position for which an other-than-temporary impairment has not been recognized and the related gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
December31, 2009
Less than 12 Months 12MonthsorGreater Total
Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss
U.S. Government and agency securities $ 886,657 $ (1,825 ) $ $ $ 886,657 $ (1,825 )
Municipal bonds |