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Investments | 3 Months Ended
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Mar. 31, 2018
Investments Schedule [Abstract] |
Investments | Investments At March 31, 2018 and December 31, 2017, the Company's investments were as follows:
| March 31, 2018 |  | December 31, 2017
($ in thousands) |  |  |
Marketable securities | $ | 62,039 |  |  | $ | 66,424 |
Equity method investments | 12,420 |  |  | 11,098 |
Nonqualified retirement plan assets | 6,669 |  |  | 6,706 |
Investments in collateralized loan obligations | 43,295 |  |  | 23,339 |
Other investments | 925 |  |  | 925 |
Total investments | $ | 125,348 |  |  | $ | 108,492 |
Marketable Securities Marketable securities consist primarily of investments in the Company's sponsored mutual funds, excluding the investments in consolidated investment products discussed in Note 15. The composition of the Company’s marketable securities is summarized as follows: March 31, 2018
| Cost |  | Unrealized Loss |  | Unrealized Gain |  | Fair Value
($ in thousands) |  |  |  |  |  |  |
Marketable securities: |  |  |  |  |  |  |
Sponsored funds | $ | 41,463 |  |  | $ | (928 | ) |  | $ | 1,380 |  |  | $ | 41,915 |
Equity securities | 13,621 |  |  | (11 | ) |  | 2,939 |  |  | 16,549 |
Sponsored closed-end funds | 3,770 |  |  | (382 | ) |  | 187 |  |  | 3,575 |
Total marketable securities | $ | 58,854 |  |  | $ | (1,321 | ) |  | $ | 4,506 |  |  | $ | 62,039 |
December 31, 2017
| Cost |  | Unrealized Loss |  | Unrealized Gain |  | Fair Value
($ in thousands) |  |  |  |  |  |  |
Marketable securities: |  |  |  |  |  |  |
Sponsored funds | $ | 47,084 |  |  | $ | (1,294 | ) |  | $ | 1,059 |  |  | $ | 46,849 |
Equity securities | 13,141 |  |  | (2 | ) |  | 2,671 |  |  | 15,810 |
Sponsored closed-end funds | 3,761 |  |  | (302 | ) |  | 306 |  |  | 3,765 |
Total marketable securities | $ | 63,986 |  |  | $ | (1,598 | ) |  | $ | 4,036 |  |  | $ | 66,424 |
For the three months ended March 31, 2018, the Company recognized a net realized loss of $0.4 million on marketable securities. For the three months ended March 31, 2017, the Company recognized a net realized gain of $0.6 million on marketable securities.

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- Definition The entire disclosure for investments, including all tables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 6 -Section 10 -Paragraph (c) -Subparagraph (1) + Details
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- References No definition available. + Details
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