XML 42 R28.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2016
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]  
Summary of financial instruments measured at fair value on a recurring basis
The following table presents the financial instruments that were measured at fair value on a recurring basis at December 31, 2016 and 2015 by level within the fair value hierarchy (in thousands): 
 
December 31, 2016
Financial Assets
Level 1
 
Level 2
 
Level 3
 
Total
Money market funds
$
11,172

 
$
—

 
$
—

 
$
11,172

Common shares of CO2 Solutions (1)
—

 
1,142

 
—

 
1,142

Total
$
11,172

 
$
1,142

 
$
—

 
$
12,314

 
December 31, 2015
Financial Assets
Level 1
 
Level 2
 
Level 3
 
Total
Money market funds
$
11,120


$
—

 
$
—


$
11,120

Common shares of CO2 Solutions (1)
—


1,549

 
—

 
1,549

Total
$
11,120

 
$
1,549

 
$
—

 
$
12,669


(1)
We calculated the fair value of our investment in 10,000,000 common shares of CO2 Solutions using the market value of common shares as determined by trading on the TSX Venture Exchange.