Stock Offering	3 Months Ended
Mar. 31, 2013
Stock Offering [Abstract]
Stock Offering	Stock Offering In April 2011, the Company filed a shelf registration statement on Form S-3 with the SEC to, from time to time, sell up to an aggregate of $125 million of its common stock, warrants or debt securities. During the quarter ended March 31, 2012, the Company sold a total of 572,510 shares of its common stock for net proceeds of $10.3 million pursuant an At-the-Market Equity Offering Sales Agreement (“Sales Agreement”) with Citadel Securities LLC (“Citadel”) dated February 2012. No shares have been sold subsequent to the quarter ended March 31, 2012. As a result of the restatement of our previously issued financial statements as discussed in Note 2, the Company is no longer in compliance with the ongoing eligibility requirements of this shelf registration statement on Form S-3, the shelf registration statement is therefore no longer effective.

Stock Offering

In April 2011, the Company filed a shelf registration statement on Form S-3 with the SEC to, from time to time, sell up to an aggregate of $125 million of its common stock, warrants or debt securities. During the quarter ended March 31, 2012, the Company sold a total of 572,510 shares of its common stock for net proceeds of $10.3 million pursuant an At-the-Market Equity Offering Sales Agreement (“Sales Agreement”) with Citadel Securities LLC (“Citadel”) dated February 2012. No shares have been sold subsequent to the quarter ended March 31, 2012.

As a result of the restatement of our previously issued financial statements as discussed in Note 2, the Company is no longer in compliance with the ongoing eligibility requirements of this shelf registration statement on Form S-3, the shelf registration statement is therefore no longer effective.