Subsequent Events	9 Months Ended
Sep. 30, 2011
Subsequent Events [Abstract]
Subsequent Events	Note 14 — Subsequent Events On November 6, 2011, we entered into a definitive agreement to be acquired by an affiliate of Siris Capital Group, LLC ("Siris") for approximately $780.0 million. Our Board of Directors approved the transaction, which is subject to customary closing conditions, including approval by our shareholders and regulatory approvals. If the transaction is approved by our shareholders, the Siris affiliate would acquire all of the outstanding shares of common stock of Tekelec for $11.00 per share in cash with an expected closing in the first quarter of 2012. A special meeting of Tekelec's shareholders will be held after the preparation and filing of a proxy statement with the Securities and Exchange Commission and subsequent mailing of the proxy statement to shareholders. Upon completion of the proposed acquisition, Tekelec would become a private company, wholly owned by the affiliate of Siris.

Subsequent Events

9 Months Ended

Sep. 30, 2011

Note 14 — Subsequent Events

On November 6, 2011, we entered into a definitive agreement to be acquired by an affiliate of Siris Capital Group, LLC ("Siris") for approximately $780.0 million. Our Board of Directors approved the transaction, which is subject to customary closing conditions, including approval by our shareholders and regulatory approvals. If the transaction is approved by our shareholders, the Siris affiliate would acquire all of the outstanding shares of common stock of Tekelec for $11.00 per share in cash with an expected closing in the first quarter of 2012.

A special meeting of Tekelec's shareholders will be held after the preparation and filing of a proxy statement with the Securities and Exchange Commission and subsequent mailing of the proxy statement to shareholders. Upon completion of the proposed acquisition, Tekelec would become a private company, wholly owned by the affiliate of Siris.