Non-Marketable Investments	12 Months Ended
Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Non-Marketable Investments	(4) Non-Marketable Investments At December 31, 2015 and 2014, the carrying value of the Company’s non-marketable investments, which were composed primarily of interests in technology-related private equity funds, were $3.6 million and $3.8 million, respectively, and are included in other assets in the Consolidated Balance Sheets. One of the Company’s investments, with a book value of $0.4 million and $0.7 million at December 31, 2015 and 2014, 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. During the years ended December 31, 2014 and 2013, the Company recorded losses from its non-marketable investments of $(0.3) million and $(0.6) million, respectively, which are included in losses on investments, net in the Consolidated Statements of Income. During the year ended December 31, 2015 losses from non-marketable investments were insignificant. During the years ended December 31, 2015, 2014 and 2013, gross distributions of $0.1 million, $1.5 million and $0.4 million, respectively, were received from the funds.

(4) Non-Marketable Investments

At December 31, 2015 and 2014, the carrying value of the Company’s non-marketable investments, which were composed primarily of interests in technology-related private equity funds, were $3.6 million and $3.8 million, respectively, and are included in other assets in the Consolidated Balance Sheets.

One of the Company’s investments, with a book value of $0.4 million and $0.7 million at December 31, 2015 and 2014, 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. During the years ended December 31, 2014 and 2013, the Company recorded losses from its non-marketable investments of $(0.3) million and $(0.6) million, respectively, which are included in losses on investments, net in the Consolidated Statements of Income. During the year ended December 31, 2015 losses from non-marketable investments were insignificant. During the years ended December 31, 2015, 2014 and 2013, gross distributions of $0.1 million, $1.5 million and $0.4 million, respectively, were received from the funds.