COMMITMENTS AND CONTINGENCIES	9 Months Ended
Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	4. COMMITMENTS AND CONTINGENCIES Operating Lease Commitment On September 21, 2017, we amended the lease agreement for our premises at 149 Commonwealth Drive, Menlo Park, California, to extend the lease term from February 2018 through January 2020. Operating lease obligations under the amended lease agreement for the extended lease term include aggregate future minimum payments of approximately $1,380,000. Securities Lawsuits We and certain of our officers were named as defendants in two purported class action securities lawsuits filed in the United States District Court for the Northern District of California, or the California District Court, as well as a third securities lawsuit, not styled as a class action, which was originally filed in the United States District Court for the Southern District of Mississippi, but subsequently transferred to the California District Court. These three cases, or the Class Action Lawsuits, which were based on the same factual background, were consolidated for all purposes. On July 21, 2017, the California District Court entered an order and final judgment that dismissed with prejudice and released the claims asserted in the Class Action Lawsuits against all named defendants in connection with the Class Action Lawsuits, including us, and any claims that could have been asserted that arise or relate to the facts alleged in the Class Action Lawsuits, such that every member of the settlement class will be barred from asserting such claims in the future. In connection with the settlement of the Class Action Lawsuits, in April 2017, we paid $250,000 and our insurance providers paid $6,000,000 to a settlement escrow account to be paid to members of the settlement class, less payment of attorneys’ fees and costs to plaintiff’s counsel. The settlement does not constitute any admission of fault or wrongdoing by us or any of the individual defendants. We do not expect to make any additional payments for and do not expect, and are not aware of, any additional claims arising from or related to the facts alleged in the Class Action Lawsuits and asserted by stockholders who have opted out of the settlement class in the Class Action Lawsuits. However, it is possible that additional lawsuits may be filed, or allegations may be made by stockholders, with respect to these same or other matters and also naming us and/or our officers and directors as defendants. Monitoring, initiating and defending against legal actions is time-consuming for our management, is likely to be expensive and may detract from our ability to fully focus our internal resources on our business activities. In addition, despite the availability of insurance, we may incur substantial legal fees and costs in connection with any additional litigation and such amounts could be material to our financial statements. We may expend significant resources in the settlement or defense of any additional lawsuits, and we may not prevail in such lawsuits. We have not established any reserve for any potential liability relating to any additional lawsuits. For a more complete discussion of the Class Action Lawsuits, see the section entitled “Legal Proceedings” under Part II, Item 1 of this Form 10-Q.

4. COMMITMENTS AND CONTINGENCIES

Operating Lease Commitment

On September 21, 2017, we amended the lease agreement for our premises at 149 Commonwealth Drive, Menlo Park, California, to extend the lease term from February 2018 through January 2020. Operating lease obligations under the amended lease agreement for the extended lease term include aggregate future minimum payments of approximately $1,380,000.

Securities Lawsuits

We and certain of our officers were named as defendants in two purported class action securities lawsuits filed in the United States District Court for the Northern District of California, or the California District Court, as well as a third securities lawsuit, not styled as a class action, which was originally filed in the United States District Court for the Southern District of Mississippi, but subsequently transferred to the California District Court. These three cases, or the Class Action Lawsuits, which were based on the same factual background, were consolidated for all purposes.

On July 21, 2017, the California District Court entered an order and final judgment that dismissed with prejudice and released the claims asserted in the Class Action Lawsuits against all named defendants in connection with the Class Action Lawsuits, including us, and any claims that could have been asserted that arise or relate to the facts alleged in the Class Action Lawsuits, such that every member of the settlement class will be barred from asserting such claims in the future. In connection with the settlement of the Class Action Lawsuits, in April 2017, we paid $250,000 and our insurance providers paid $6,000,000 to a settlement escrow account to be paid to members of the settlement class, less payment of attorneys’ fees and costs to plaintiff’s counsel. The settlement does not constitute any admission of fault or wrongdoing by us or any of the individual defendants.

We do not expect to make any additional payments for and do not expect, and are not aware of, any additional claims arising from or related to the facts alleged in the Class Action Lawsuits and asserted by stockholders who have opted out of the settlement class in the Class Action Lawsuits. However, it is possible that additional lawsuits may be filed, or allegations may be made by stockholders, with respect to these same or other matters and also naming us and/or our officers and directors as defendants. Monitoring, initiating and defending against legal actions is time-consuming for our management, is likely to be expensive and may detract from our ability to fully focus our internal resources on our business activities. In addition, despite the availability of insurance, we may incur substantial legal fees and costs in connection with any additional litigation and such amounts could be material to our financial statements. We may expend significant resources in the settlement or defense of any additional lawsuits, and we may not prevail in such lawsuits. We have not established any reserve for any potential liability relating to any additional lawsuits.

For a more complete discussion of the Class Action Lawsuits, see the section entitled “Legal Proceedings” under Part II, Item 1 of this Form 10-Q.