XML 23 R12.htm IDEA: XBRL DOCUMENT v3.7.0.1
Cash Equivalents and Marketable Securities
 6 Months Ended
Jun. 30, 2017
Cash Equivalents and Marketable Securities [Abstract]  
Cash Equivalents and Marketable Securities
Cash Equivalents and Marketable Securities
Cash equivalents and marketable securities classified as available-for-sale at June 30, 2017 and at December 31, 2016 consisted of the following (in thousands):
 
June 30, 2017
 
Adjusted Cost
 
Gross Unrealized
Gains
 
Gross Unrealized
Losses
 
Estimated
Fair Value
Money market funds (1)
$
10,736

 
$
—

 
$
—

 
$
10,736

Common shares of CO2 Solutions (2)
563

 
742

 
—

 
1,305

Total
$
11,299

 
$
742

 
$
—

 
$
12,041


 
December 31, 2016
 
Adjusted Cost
 
Gross Unrealized
Gains
 
Gross Unrealized
Losses
 
Estimated
Fair Value
Money market funds (1)
$
11,172

 
$
—

 
$
—

 
$
11,172

Common shares of CO2 Solutions (2)
563

 
579

 
—

 
1,142

Total
$
11,735

 
$
579

 
$
—

 
$
12,314


(1) Money market funds are classified in cash and cash equivalents on our condensed consolidated balance sheets.
(2) Common shares of CO2 Solutions are classified in marketable securities on our condensed consolidated balance sheets.
There were no marketable securities in an unrealized loss position at June 30, 2017 or at December 31, 2016.