Non-Marketable Investments	9 Months Ended
Sep. 30, 2012
Non-Marketable Investments [Abstract]
Non-Marketable Investments	Note 4 — Non-Marketable Investments At September 30, 2012 and December 31, 2011, the carrying value of the Company’s non-marketable investments, which were composed primarily of interests in technology-related private equity funds, was $7.8 million and $7.9 million, respectively, and is recorded in other assets in the Consolidated Balance Sheets. One of the Company’s investments, with a book value of $1.4 million and $1.5 million at September 30, 2012 and December 31, 2011, respectively, is being accounted for using the cost method and, accordingly, is valued at cost unless an other-than-temporary impairment in its value occurs. The other investments are being accounted for using the equity method as the investments are limited partnerships and the Company has an ownership interest in excess of 5% and, accordingly, the Company records its share of the investee’s operating results each period. The Company recorded a gain from its non-marketable investments of $0.1 million during the three months ended September 30, 2012, and $0.3 million and $0.6 million during the nine months ended September 30, 2012 and 2011, respectively, which are included in gains on investments, net in the Consolidated Statements of Income. Gains from non-marketable investments were insignificant during the three months ended September 30, 2011. During the third quarter of 2012, the Company identified an error related to the amount of income previously recorded for investments under the equity-method. Income related to equity method investments was understated by approximately $0.4 million in 2007, $0.2 million in 2008 and, based on a revision received by the Company in the third quarter of 2012 to the information that was originally provided to the Company for the year ended December 31, 2011, was overstated by approximately $1.2 million in 2011. Management has concluded that these errors are immaterial to all prior period financial statements and recorded a correction of these errors as a $0.6 million reduction in equity method income in the three months ended September 30, 2012.

Non-Marketable Investments

9 Months Ended

Sep. 30, 2012

Non-Marketable Investments [Abstract]

Note 4 — Non-Marketable Investments

At September 30, 2012 and December 31, 2011, the carrying value of the Company’s non-marketable investments, which were composed primarily of interests in technology-related private equity funds, was $7.8 million and $7.9 million, respectively, and is recorded in other assets in the Consolidated Balance Sheets.

One of the Company’s investments, with a book value of $1.4 million and $1.5 million at September 30, 2012 and December 31, 2011, respectively, is being accounted for using the cost method and, accordingly, is valued at cost unless an other-than-temporary impairment in its value occurs. The other investments are being accounted for using the equity method as the investments are limited partnerships and the Company has an ownership interest in excess of 5% and, accordingly, the Company records its share of the investee’s operating results each period. The Company recorded a gain from its non-marketable investments of $0.1 million during the three months ended September 30, 2012, and $0.3 million and $0.6 million during the nine months ended September 30, 2012 and 2011, respectively, which are included in gains on investments, net in the Consolidated Statements of Income. Gains from non-marketable investments were insignificant during the three months ended September 30, 2011. During the third quarter of 2012, the Company identified an error related to the amount of income previously recorded for investments under the equity-method. Income related to equity method investments was understated by approximately $0.4 million in 2007, $0.2 million in 2008 and, based on a revision received by the Company in the third quarter of 2012 to the information that was originally provided to the Company for the year ended December 31, 2011, was overstated by approximately $1.2 million in 2011. Management has concluded that these errors are immaterial to all prior period financial statements and recorded a correction of these errors as a $0.6 million reduction in equity method income in the three months ended September 30, 2012.