Basis Of Presentation And Changes In Significant Accounting Policies	9 Months Ended
Sep. 30, 2011
Basis Of Presentation And Changes In Significant Accounting Policies [Abstract]
Basis Of Presentation And Changes In Significant Accounting Policies	Note 1 — Basis of Presentation and Changes in Significant Accounting Policies *Basis of Presentation* The accompanying unaudited condensed consolidated financial statements include the accounts of Tekelec and our wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared on substantially the same basis as the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2010. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted pursuant to the instructions for Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of our consolidated financial condition and consolidated results of operations. The results of operations for the current interim period are not necessarily indicative of results for the current year. We operate under a thirteen-week calendar quarter. For financial statement presentation purposes, the reporting periods are referred to as ended on the last calendar day of the quarter. The accompanying unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2011 and 2010 are for the thirteen and thirty-nine weeks ended September 30, 2011 and October 1, 2010, respectively. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2010 and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2010. *Recent Accounting Pronouncements* *Testing Goodwill for Impairment. In September, 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2011-08, "Testing Goodwill for Impairment (the revised standard)." The revised standard is intended to reduce the cost and complexity of the annual goodwill impairment test by providing both public and nonpublic entities with the option of performing a "qualitative" assessment to determine whether further impairment testing is necessary. The revised standard is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. However, an entity can choose to early adopt the revised standard even if its annual test date is before September 15, 2011 (the date on which the revised standard was issued), provided that the entity has not yet issued its financial statements for the period that includes its annual test date. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow. Presentation of Comprehensive Income.* In June 2011, the FASB issued ASU No. 2011-05, "Comprehensive Income: Presentation of Comprehensive Income," which amends current comprehensive income guidance. This ASU eliminates the option to present the components of other comprehensive income as part of the statement of shareholders' equity. Instead, it requires entities to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements. Under the two-statement approach, the first statement would include components of net income, which is consistent with the income statement format used today, and the second statement would include components of other comprehensive income ("OCI"). The ASU does not change the items that must be reported in OCI. ASU 2011-05 will be effective for public companies during the interim and annual periods beginning after December 15, 2011 with early adoption permitted. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow. *Fair Value Measurements and Disclosures.* In May 2011, the FASB issued ASU 2011-04 "Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." The ASU is the result of joint efforts by the FASB and the International Accounting Standards Board ("IASB") to develop a single, converged fair value framework. While the ASU is largely consistent with existing fair value measurement principles in U.S. GAAP, it expands existing disclosure requirements for fair value measurements and makes other amendments. Key additional disclosures include quantitative disclosures about unobservable inputs in Level 3 measures, qualitative information about sensitivity of Level 3 measures and valuation process, and classification within the fair value hierarchy for instruments where fair value is only disclosed in the footnotes but carrying amount is on some other basis. For public companies, the ASU is effective for interim and annual periods beginning after December 15, 2011. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow.

Basis Of Presentation And Changes In Significant Accounting Policies

9 Months Ended

Sep. 30, 2011

Basis Of Presentation And Changes In Significant Accounting Policies [Abstract]

Basis Of Presentation And Changes In Significant Accounting Policies

Note 1 — Basis of Presentation and Changes in Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Tekelec and our wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared on substantially the same basis as the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2010. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the United States have been condensed or omitted pursuant to the instructions for Form 10-Q and Article 10 of Regulation S-X.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of our consolidated financial condition and consolidated results of operations. The results of operations for the current interim period are not necessarily indicative of results for the current year.

We operate under a thirteen-week calendar quarter. For financial statement presentation purposes, the reporting periods are referred to as ended on the last calendar day of the quarter. The accompanying unaudited condensed consolidated financial statements for the three and nine months ended September 30, 2011 and 2010 are for the thirteen and thirty-nine weeks ended September 30, 2011 and October 1, 2010, respectively.

The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2010 and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2010.

Recent Accounting Pronouncements

Testing Goodwill for Impairment. In September, 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2011-08, "Testing Goodwill for Impairment (the revised standard)." The revised standard is intended to reduce the cost and complexity of the annual goodwill impairment test by providing both public and nonpublic entities with the option of performing a "qualitative" assessment to determine whether further impairment testing is necessary. The revised standard is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. However, an entity can choose to early adopt the revised standard even if its annual test date is before September 15, 2011 (the date on which the revised standard was issued), provided that the entity has not yet issued its financial statements for the period that includes its annual test date. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow.

Presentation of Comprehensive Income. In June 2011, the FASB issued ASU No. 2011-05, "Comprehensive Income: Presentation of Comprehensive Income," which amends current comprehensive income guidance. This ASU eliminates the option to present the components of other comprehensive income as part of the statement of shareholders' equity. Instead, it requires entities to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements. Under the two-statement approach, the first statement would include components of net income, which is consistent with the income statement format used today, and the second statement would include components of other comprehensive income ("OCI"). The ASU does not change the items that must be reported in OCI. ASU 2011-05 will be effective for public companies during the interim and annual periods beginning after December 15, 2011 with early adoption permitted. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow.

Fair Value Measurements and Disclosures. In May 2011, the FASB issued ASU 2011-04 "Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." The ASU is the result of joint efforts by the FASB and the International Accounting Standards Board ("IASB") to develop a single, converged fair value framework. While the ASU is largely consistent with existing fair value measurement principles in U.S. GAAP, it expands existing disclosure requirements for fair value measurements and makes other amendments. Key additional disclosures include quantitative disclosures about unobservable inputs in Level 3 measures, qualitative information about sensitivity of Level 3 measures and valuation process, and classification within the fair value hierarchy for instruments where fair value is only disclosed in the footnotes but carrying amount is on some other basis. For public companies, the ASU is effective for interim and annual periods beginning after December 15, 2011. We do not expect adoption of this ASU to have a material impact on our results of operations, financial position or cash flow.