Contingencies	9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies The Company may be, from time to time, a party to various disputes and claims arising from normal business activities. The Company accrues for loss contingencies when available information indicates that it is probable that a liability has been incurred and the amount of such loss can be reasonably estimated. In the cases where the Company believes that a reasonably possible loss exists, the Company discloses the facts and circumstances of the litigation, including an estimable range, if possible. The Company is currently party to the legal proceedings described in Part II, Item 1, Legal Proceedings, of this Quarterly Report on Form 10-Q, which include patent litigation matters and litigation related to a license agreement. The Company has assessed such legal proceedings and recorded a loss contingency of $5.2 million during the nine months ended September 30, 2018 as a result of settlement of the Biogen matter discussed therein. For all other matters the Company does not believe that it is probable that a liability has been incurred or that the amount of any potential liability can be reasonably estimated. As a result, the Company did not record a loss contingency related to any of these legal proceedings. Particularly with respect to the litigation related to a license agreement, the Company is presently unable to predict the outcome of such lawsuit or to reasonably estimate the possible loss, or range of potential losses, if any, related to such lawsuit. While it is not possible to determine the outcome of the matters described in Part II, Item 1, Legal Proceedings, of this Quarterly Report on Form 10-Q, the Company believes that the resolution of all such matters could have a material adverse effect on its financial condition or results of operations and cash flows.

Contingencies

The Company may be, from time to time, a party to various disputes and claims arising from normal business activities. The Company accrues for loss contingencies when available information indicates that it is probable that a liability has been incurred and the amount of such loss can be reasonably estimated. In the cases where the Company believes that a reasonably possible loss exists, the Company discloses the facts and circumstances of the litigation, including an estimable range, if possible.

The Company is currently party to the legal proceedings described in Part II, Item 1, Legal Proceedings, of this Quarterly Report on Form 10-Q, which include patent litigation matters and litigation related to a license agreement. The Company has assessed such legal proceedings and recorded a loss contingency of $5.2 million during the nine months ended September 30, 2018 as a result of settlement of the Biogen matter discussed therein. For all other matters the Company does not believe that it is probable that a liability has been incurred or that the amount of any potential liability can be reasonably estimated. As a result, the Company did not record a loss contingency related to any of these legal proceedings. Particularly with respect to the litigation related to a license agreement, the Company is presently unable to predict the outcome of such lawsuit or to reasonably estimate the possible loss, or range of potential losses, if any, related to such lawsuit. While it is not possible to determine the outcome of the matters described in Part II, Item 1, Legal Proceedings, of this Quarterly Report on Form 10-Q, the Company believes that the resolution of all such matters could have a material adverse effect on its financial condition or results of operations and cash flows.