Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2013
Summary of Significant Accounting Policies [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Presentation of Accumulated Other Comprehensive Income In February 2013, the FASB issued ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02"), which amends the provisions of FASB ASC 220, Comprehensive Income. The amendments in this update supercede and replace the presentation requirements for reclassifications out of accumulated other comprehensive income in FASB ASU 2011-05 and ASU 2011-12. The amendment requires an entity to present information about significant items reclassified out of accumulated other comprehensive income by component either (1) on the face of the statement where net income is presented or (2) as a separate disclosure in the notes to the consolidated financial statements. The amendment is effective for annual reporting periods beginning after December 15, 2012, which for us was January 1, 2013, and interim periods within those annual periods. As a result of the adoption of this standard, we have elected to present amounts reclassified out of accumulated other comprehensive income as a separate disclosure in the notes to the consolidated financial statements. Indefinite-Lived Intangible Assets Impairment Testing In July 2012, the FASB issued ASU 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment ("ASU 2012-02"), which amended the provisions of FASB ASC 350, Intangibles-Goodwill and Other. FASB ASU 2012-02 permits an entity to make a qualitative assessment of whether it is more likely than not that an indefinite-lived intangible asset is less than its carrying amount before applying the second step of the impairment test. If an entity concludes that it is not more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount, it would not be required to perform the second step of the impairment test for that indefinite-lived intangible asset. The new standard is effective for annual and interim indefinite-lived intangible assets impairment tests performed in fiscal years beginning after September 15, 2012, which for us was January 1, 2013. We will consider this new standard when conducting our annual impairment test of indefinite-lived intangible assets. Balance Sheet Disclosures about Offsetting Assets and Liabilities In December 2011, the FASB issued ASU 2011-11, Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities ("ASU 2011-11"). The update requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. The amendment was effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of FASB ASU 2011-11 did not have a material effect on our consolidated financial statements and disclosures.

Recently Issued Accounting Pronouncements

Presentation of Accumulated Other Comprehensive Income

In February 2013, the FASB issued ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02"), which amends the provisions of FASB ASC 220, Comprehensive Income. The amendments in this update supercede and replace the presentation requirements for reclassifications out of accumulated other comprehensive income in FASB ASU 2011-05 and ASU 2011-12. The amendment requires an entity to present information about significant items reclassified out of accumulated other comprehensive income by component either (1) on the face of the statement where net income is presented or (2) as a separate disclosure in the notes to the consolidated financial statements. The amendment is effective for annual reporting periods beginning after December 15, 2012, which for us was January 1, 2013, and interim periods within those annual periods. As a result of the adoption of this standard, we have elected to present amounts reclassified out of accumulated other comprehensive income as a separate disclosure in the notes to the consolidated financial statements.

Indefinite-Lived Intangible Assets Impairment Testing

In July 2012, the FASB issued ASU 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment ("ASU 2012-02"), which amended the provisions of FASB ASC 350, Intangibles-Goodwill and Other. FASB ASU 2012-02 permits an entity to make a qualitative assessment of whether it is more likely than not that an indefinite-lived intangible asset is less than its carrying amount before applying the second step of the impairment test. If an entity concludes that it is not more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount, it would not be required to perform the second step of the impairment test for that indefinite-lived intangible asset. The new standard is effective for annual and interim indefinite-lived intangible assets impairment tests performed in fiscal years beginning after September 15, 2012, which for us was January 1, 2013. We will consider this new standard when conducting our annual impairment test of indefinite-lived intangible assets.

Balance Sheet Disclosures about Offsetting Assets and Liabilities

In December 2011, the FASB issued ASU 2011-11, Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities ("ASU 2011-11"). The update requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. The amendment was effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of FASB ASU 2011-11 did not have a material effect on our consolidated financial statements and disclosures.