Cash Equivalents and Marketable Securities

3 Months Ended

Mar. 31, 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 March 31, 2017 and at December 31, 2016 consisted of the following (in thousands):

	March 31, 2017
	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Money market funds (1)	$	11,190	$	—	$	—	$	11,190
Common shares of CO2 Solutions (2)	563		488		—		1,051
Total	$	11,753	$	488	$	—	$	12,241

	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 March 31, 2017 or at December 31, 2016.