Cash Equivalents and Marketable Securities

9 Months Ended

Sep. 30, 2016

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 September 30, 2016 and at December 31, 2015 consisted of the following (in thousands):

	September 30, 2016
	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Money market funds (1)	$	11,153	$	—	$	—	$	11,153
Common shares of CO2 Solutions (2)	563		964		—		1,527
Total	$	11,716	$	964	$	—	$	12,680

	December 31, 2015
	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Money market funds (1)	$	11,120	$	—	$	—	$	11,120
Common shares of CO2 Solutions (2)	563		986		—		1,549
Total	$	11,683	$	986	$	—	$	12,669

(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 September 30, 2016 or at December 31, 2015.