Legal Matters	9 Months Ended
Sep. 30, 2013
Loss Contingency, Information about Litigation Matters [Abstract]
Legal Matters	Legal Matters On February 7, 2012, the Company filed suit against Pragmatus Telecom LLC in the District of Delaware, seeking a declaratory judgment that the Company’s products do not infringe three patents owned by Pragmatus which Pragmatus had previously asserted were infringed by certain of the Company’s customers. On March 13, 2012, the Company amended the complaint to add a request for a declaratory judgment that those three patents are invalid. On April 6, 2012, Pragmatus answered the Amended Complaint, and asserted counterclaims against the Company asserting infringement of the same three patents and seeking unspecified monetary damages and injunctive relief. The Court entered a Scheduling Order on June 1, 2012 scheduling trial in this matter to begin on or after September 8, 2014. The matter is presently stayed until December 2013. The Company currently does not expect that the outcome of this matter will have a material adverse effect on the Company’s financial condition, results of operations or cash flows. However, litigation is inherently unpredictable; therefore, judgments could be rendered or settlements entered, that could adversely affect the Company’s operating results or cash flows in a particular period. Though it is reasonably possible that the Company will incur a liability associated with this litigation, the amount of any such liability is not reasonably estimable at this time. The Company routinely assesses all of its litigation and threatened litigation as to the probability of ultimately incurring a liability, and records its best estimate of the ultimate loss in situations where it assesses the likelihood of loss as probable. From time to time, the Company is involved in or subject to legal, administrative and regulatory proceedings, claims, demands and investigations arising in the ordinary course of business, including direct claims brought by or against the Company with respect to intellectual property, contracts, employment and other matters, as well as claims brought against its customers for whom it has a contractual indemnification obligation. The Company accrues for a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Significant judgment is required in both the determination of probability and the determination as to whether a loss is reasonably estimable. In addition, in the event the Company determines that a loss is not probable, but is reasonably possible, and it becomes possible to develop what the Company believes to be a reasonable range of possible loss, then the Company will include disclosures related to such matter as appropriate and in compliance with ASC 450. The accruals or estimates, if any, resulting from the foregoing analysis, are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter. To the extent there is a reasonable possibility that the losses could exceed the amounts already accrued, the Company will, as applicable, adjust the accrual in the period the determination is made, disclose an estimate of the additional loss or range of loss, indicate that the estimate is immaterial with respect to its financial statements as a whole or, if the amount of such adjustment cannot be reasonably estimated, disclose that an estimate cannot be made.

Legal Matters

On February 7, 2012, the Company filed suit against Pragmatus Telecom LLC in the District of Delaware, seeking a declaratory judgment that the Company’s products do not infringe three patents owned by Pragmatus which Pragmatus had previously asserted were infringed by certain of the Company’s customers. On March 13, 2012, the Company amended the complaint to add a request for a declaratory judgment that those three patents are invalid. On April 6, 2012, Pragmatus answered the Amended Complaint, and asserted counterclaims against the Company asserting infringement of the same three patents and seeking unspecified monetary damages and injunctive relief. The Court entered a Scheduling Order on June 1, 2012 scheduling trial in this matter to begin on or after September 8, 2014. The matter is presently stayed until December 2013. The Company currently does not expect that the outcome of this matter will have a material adverse effect on the Company’s financial condition, results of operations or cash flows. However, litigation is inherently unpredictable; therefore, judgments could be rendered or settlements entered, that could adversely affect the Company’s operating results or cash flows in a particular period. Though it is reasonably possible that the Company will incur a liability associated with this litigation, the amount of any such liability is not reasonably estimable at this time.

The Company routinely assesses all of its litigation and threatened litigation as to the probability of ultimately incurring a liability, and records its best estimate of the ultimate loss in situations where it assesses the likelihood of loss as probable.

From time to time, the Company is involved in or subject to legal, administrative and regulatory proceedings, claims, demands and investigations arising in the ordinary course of business, including direct claims brought by or against the Company with respect to intellectual property, contracts, employment and other matters, as well as claims brought against its customers for whom it has a contractual indemnification obligation. The Company accrues for a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Significant judgment is required in both the determination of probability and the determination as to whether a loss is reasonably estimable. In addition, in the event the Company determines that a loss is not probable, but is reasonably possible, and it becomes possible to develop what the Company believes to be a reasonable range of possible loss, then the Company will include disclosures related to such matter as appropriate and in compliance with ASC 450. The accruals or estimates, if any, resulting from the foregoing analysis, are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter. To the extent there is a reasonable possibility that the losses could exceed the amounts already accrued, the Company will, as applicable, adjust the accrual in the period the determination is made, disclose an estimate of the additional loss or range of loss, indicate that the estimate is immaterial with respect to its financial statements as a whole or, if the amount of such adjustment cannot be reasonably estimated, disclose that an estimate cannot be made.