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Investments in Marketable Securities | 12 Months Ended
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Dec. 31, 2013
Marketable Securities [Abstract] |
Investments in Marketable Securities | Investments in Marketable Securities Investment in marketable securities at December 31, 2012 and 2013 were $128.9 million and $157.9 million, respectively. These investments are comprised of the Company's investment in Value Partners Group Limited ("Value Partners"), a publicly-traded asset management firm based in Hong Kong, and investments held by Affiliates. The following is a summary of the cost, gross unrealized gains and losses and fair value of investments classified as available-for-sale and trading at December 31, 2012 and 2013:
| Available-for-Sale |  | Trading
| December 31, 2012 |  | December 31, 2013 |  | December 31, 2012 |  | December 31, 2013 |
Cost | $ | 103.2 |  |  | $ | 103.2 |  |  | $ | 10.3 |  |  | $ | 17.9 |
Unrealized Gains | 15.3 |  |  | 33.3 |  |  | 6.5 |  |  | 4.6 |
Unrealized Losses | (3.2 | ) |  | (1.1 | ) |  | (3.2 | ) |  | — |
Fair Value | $ | 115.3 |  |  | $ | 135.4 |  |  | $ | 13.6 |  |  | $ | 22.5 |
The Company had no significant realized gains and losses on investments for the periods presented.

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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