Subsequent event	6 Months Ended
Jun. 30, 2012
Subsequent Events [Abstract]
Subsequent events	14. Subsequent event On July 23, 2012, the Company entered into a stipulation of settlement to resolve the consolidated class action securities lawsuits. The current and former officers and directors named as individual defendants in the consolidated lawsuits have also entered into the stipulation of settlement which remains subject to preliminary and final approval by the U.S. District Court. Subject to preliminary and final approval of the settlement by the U.S. District Court, and in exchange for a release of all claims by the class members, among others, and a dismissal of the consolidated lawsuits, the Company has agreed (i) to cause its insurers to pay class members and their attorneys a total of $16 million; and (ii) to issue to class members and their attorneys 2,777,778 shares of the Company’s common stock. The Company has also agreed that if the consolidated closing bid price for its common stock is below $1.00 per share on the date the U.S. District Court enters an order of final judgment, then the Company will issue class members and their attorneys an additional one million shares of its common stock. On August 3, 2012, the Company, while continuing to deny all allegations of wrongdoing or liability whatsoever arising out of the Derivative Actions, and without in any way admitting fault or liability, entered into a stipulation of settlement to resolve the Derivative Actions. Subject to preliminary and final approval of the settlement by the U.S. District Court and notice to shareholders, and in an exchange for a release of all claims by the plaintiffs, among others, and a dismissal of the Derivative Actions, the Company has agreed (i) to adopt certain corporate governance measures, (ii) to cause the Company’s insurers to pay the plaintiffs’ attorneys a total of $800,000, and (iii) to issue plaintiffs’ attorneys 225,000 shares of the Company’s common stock. Following final approval of the settlement by the U.S. District Court, the shares will be issued pursuant to an exemption from registration provided by Section 3(a)(10) of the Securities Act of 1933, as amended. As a result of settlement discussions with the plaintiff taking place in the latter part of the quarter ended June 30, 2012 and entering into the stipulation of settlement for Securities Action on July 23, 2012 and for the Derivative Action on August 3, 2012, the Company determined that the liabilities pertaining to both the securities and derivative lawsuits were probable as of June 30, 2012. Accordingly, the Company recorded a litigation settlement accrual in its financial statements as of and for the three months ended June 30, 2012 (see Note 10 — Commitments and contingencies).

Subsequent event

6 Months Ended

Jun. 30, 2012

14. Subsequent event

On July 23, 2012, the Company entered into a stipulation of settlement to resolve the consolidated class action securities lawsuits. The current and former officers and directors named as individual defendants in the consolidated lawsuits have also entered into the stipulation of settlement which remains subject to preliminary and final approval by the U.S. District Court.

Subject to preliminary and final approval of the settlement by the U.S. District Court, and in exchange for a release of all claims by the class members, among others, and a dismissal of the consolidated lawsuits, the Company has agreed (i) to cause its insurers to pay class members and their attorneys a total of $16 million; and (ii) to issue to class members and their attorneys 2,777,778 shares of the Company’s common stock. The Company has also agreed that if the consolidated closing bid price for its common stock is below $1.00 per share on the date the U.S. District Court enters an order of final judgment, then the Company will issue class members and their attorneys an additional one million shares of its common stock.

On August 3, 2012, the Company, while continuing to deny all allegations of wrongdoing or liability whatsoever arising out of the Derivative Actions, and without in any way admitting fault or liability, entered into a stipulation of settlement to resolve the Derivative Actions. Subject to preliminary and final approval of the settlement by the U.S. District Court and notice to shareholders, and in an exchange for a release of all claims by the plaintiffs, among others, and a dismissal of the Derivative Actions, the Company has agreed (i) to adopt certain corporate governance measures, (ii) to cause the Company’s insurers to pay the plaintiffs’ attorneys a total of $800,000, and (iii) to issue plaintiffs’ attorneys 225,000 shares of the Company’s common stock. Following final approval of the settlement by the U.S. District Court, the shares will be issued pursuant to an exemption from registration provided by Section 3(a)(10) of the Securities Act of 1933, as amended.

As a result of settlement discussions with the plaintiff taking place in the latter part of the quarter ended June 30, 2012 and entering into the stipulation of settlement for Securities Action on July 23, 2012 and for the Derivative Action on August 3, 2012, the Company determined that the liabilities pertaining to both the securities and derivative lawsuits were probable as of June 30, 2012. Accordingly, the Company recorded a litigation settlement accrual in its financial statements as of and for the three months ended June 30, 2012 (see Note 10 — Commitments and contingencies).