Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2013

Carrying Value of Warrants to Purchase Shares of Company's Outstanding Preferred Stock

The following information summarizes the carrying value of the warrants to purchase shares of the Company’s previously outstanding preferred stock (in thousands):


Balance at December 31, 2012	$	3,532
Issuance of preferred stock warrants		—
Warrant revaluation		482

Balance at March 31, 2013		4,014
Issuance of preferred stock warrants		137
Warrant revaluation		(1,638	)

Balance at June 30, 2013	$	2,513

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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