Common Stock and Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2013

Schedule of Madatorily Redeemable Convertible Preferred Stock

Mandatorily redeemable convertible preferred stock at December 31, 2012 was as follows:


Mandatorily Redeemable Convertible Preferred Stock	Shares Authorized		Shares Outstanding		Liquidation Preference		Book Value
					(Amounts in thousands)
Series A		564,083		557,339	$	15,628	$	15,605
Series B		520,839		515,836		14,045		13,865
Series C		3,659,375		3,551,060		38,709		38,592
Series D		3,125,000		2,430,054		22,510		20,323
Series E		1,109,375		1,063,951		23,078		15,237

		8,978,672		8,118,240	$	113,970	$	103,622

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

The following information summarizes the carrying value of the warrants to purchase shares of the Company’s preferred stock:


	(In thousands)
Balance at December 31, 2010	$	42
Issuance of preferred stock warrants		2,528
Warrant revaluation		(73	)

Balance at December 31, 2011		2,497
Issuance of preferred stock warrants		648
Warrant revaluation		387

Balance at December 31, 2012		3,532
Issuance of preferred stock warrants		138
Warrant revaluation		(1,156	)
Reclassification to common stock warrants		(2,514	)

Balance at December 31, 2013	$	—

- Definition

Tabular disclosure of the nature and terms of the financial instruments and the rights and obligations embodied in those instruments, information about settlement alternatives, if any, in the contract and identification of the entity that controls the settlement alternatives including: a. The amount that would be paid, or the number of shares that would be issued and their fair value, determined under the conditions specified in the contract if the settlement were to occur at the reporting date b. How changes in the fair value of the issuer's equity shares would affect those settlement amounts (for example, "the issuer is obligated to issue an additional x shares or pay an additional y dollars in cash for each $1 decrease in the fair value of one share") c. The maximum amount that the issuer could be required to pay to redeem the instrument by physical settlement, if applicable d. The maximum number of shares that could be required to be issued, if applicable e. That a contract does not limit the amount that the issuer could be required to pay or the number of shares that the issuer could be required to issue, if applicable f. For a forward contract or an option indexed to the issuer's equity shares, the forward price or option strike price, the number of issuer's shares to which the contract is indexed, and the settlement date or dates of the contract, as applicable. g. The components of the liability that would otherwise be related to shareholders' interest and other comprehensive income (if any) subject to the redemption feature (for example, par value and other paid in amounts of mandatorily redeemable instruments are disclosed separately from the amount of retained earnings or accumulated deficit).

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