v3.7.0.1
Marketable Securities
3 Months Ended
Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities [Text Block]
Marketable Securities
The amortized cost, gross unrealized holding gains, gross unrealized holding losses and estimated fair value of available-for-sale investments by type of security as of March 31, 2017 and December 31, 2016 were as follows:
 
 
March 31, 2017
 
 
Amortized Cost
 
Gross Unrealized Holding Gains
 
Gross Unrealized Holding Losses
 
Fair Value
Commercial paper
 
$
38

 
$

 
$

 
$
38

Corporate bonds
 
387

 

 

 
387

Municipal bonds
 
15

 

 

 
15

Other government-related obligations:
 
 
 
 
 
 
 
 
U.S.
 
7

 

 

 
7

Foreign
 
331

 

 
(1
)
 
330

Bank certificates of deposit
 
11

 

 

 
11

Total available-for-sale debt securities
 
789

 

 
(1
)
 
788

Equity securities
 

 
1

 

 
1

Total available-for-sale securities
 
789

 
1

 
(1
)
 
789


 
 
December 31, 2016
 
 
Amortized Cost
 
Gross Unrealized Holding Gains
 
Gross Unrealized Holding Losses
 
Fair Value
Commercial paper
 
$
114

 
$

 
$

 
$
114

Corporate bonds
 
124

 

 
(1
)
 
123

Municipal bonds
 
91

 

 

 
91

Other government-related obligations:
 
 
 
 
 
 
 
 
U.S.
 
28

 

 

 
28

Foreign
 
73

 

 
(1
)
 
72

Bank certificates of deposit
 
5

 

 

 
5

Total available-for-sale debt securities
 
$
435

 
$

 
$
(2
)
 
$
433

Equity securities
 

 
1

 

 
1

Total available-for-sale securities
 
435

 
1

 
(2
)
 
434



The aggregate fair value of available-for-sale securities in an unrealized loss position as of March 31, 2017 and December 31, 2016 was $485 and $265, respectively. These investments have been in a continuous unrealized loss position for less than 12 months. As of March 31, 2017, we believe that the cost basis of our available-for-sale investments is recoverable.
The fair values of available-for-sale securities by classification in the condensed consolidated balance sheet were as follows:
 
March 31, 2017
 
December 31, 2016
Cash and cash equivalents
$
57

 
$
120

Marketable securities
732

 
314

 
$
789

 
$
434



The fair values of available-for-sale debt securities at March 31, 2017, by contractual maturity, are summarized as follows:
 
March 31, 2017
Due in one year or less
$
405

Due after one year through three years
383

 
$
788



As of March 31, 2017 and December 31, 2016, the fair value of our trading securities was $17 and $13, respectively.
We utilize the specific identification method in computing realized gains and losses. Realized gains and losses on our available-for-sale and trading securities were not material for the three months ended March 31, 2017 and 2016.