15. Subsequent Event	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
15. Subsequent Event	15. Subsequent Event In February 2014, we issued 3,713,309 shares of our common stock under the warrant exchange provisions of our May and September 2013 registered direct offerings. Under the warrant exchange provisions, the holders could elect to exchange the warrants for a variable number of shares of common stock as determined by a formula included in the warrants. We did not receive additional cash consideration in the exchange transaction. We expect to record a loss of $5.0 million during the first quarter of 2014 on the exchange, as the fair market value of the common stock issued was greater than the obligation recorded due to the increase in stock price subsequent to year end.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

No definition available.

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