Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Disclosure of Long Lived Assets Held-for-sale

Total assets reclassified as Assets Held for Sale at March 31, 2014 were (in thousands):

Assets Held for Sale	Adjusted Carrying Value
Research & development equipment classified as held for sale at December 31, 2013	$	2,179
Hungarian assets sold during the three months ended March 31, 2014	(779		)
U.S. assets sold during the three months ended March 31, 2014	(6		)
Research & development equipment classified as held for sale at March 31, 2014	$	1,394

The fair value of assets held for sale at March 31, 2014 and December 31, 2013, measured on a nonrecurring basis, is as follows (in thousands):

	March 31, 2014
	Level 1		Level 2		Level 3		Total
Assets held for sale	$	—	$	—	$	1,394	$	1,394

	December 31, 2013
	Level 1		Level 2		Level 3		Total
Assets held for sale	$	—	$	—	$	2,179	$	2,179

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 March 31, 2014 by level within the fair value hierarchy (in thousands):

	March 31, 2014
	Level 1		Level 2		Level 3		Total
Money market funds	$	14,592	$	—	$	—	$	14,592
Corporate bonds	—		1,002		—		1,002
Common shares of CO2 Solutions	—		1,446		—		1,446
Total	$	14,592	$	2,448	$	—	$	17,040

The following table presents the financial instruments that were measured at fair value on a recurring basis at December 31, 2013 by level within the fair value hierarchy (in thousands):

	December 31, 2013
	Level 1		Level 2		Level 3		Total
Money market funds	$	16,089	$	—	$	—	$	16,089
Corporate bonds	—		1,005		—		1,005
U.S. Treasury obligations	—		2,000		—		2,000
Common shares of CO2 Solutions	—		795		—		795
Total	$	16,089	$	3,800	$	—	$	19,889