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Investment Portfolio (Tables) | 9 Months Ended
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Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract] |
Summary of Market Value of Investments | The following table summarizes the fair value of these investments as of September 30, 2014 and December 31, 2013:
| As of
| September 30, 2014 |  | December 31, 2013
Seed Capital Investments: |  |  |
Diamond Hill Research Opportunities Fund | $ | 13,619,318 |  |  | $ | 13,305,830 |
Diamond Hill Mid Cap Fund | 10,199,901 |  |  | — |
Diamond Hill Valuation-Weighted 500, L.P. | 3,259,028 |  |  | 3,000,328 |
Diamond Hill Global Fund, L.P. | 1,452,249 |  |  | — |
Diamond Hill Financial Long-Short Fund | 1,154,780 |  |  | 1,131,034 |
Diamond Hill Investment Partners, L.P. | — |  |  | 1,133 |
Total Seed Capital Investments | 29,685,276 |  |  | 17,438,325 |
Deferred Compensation Investments | 5,304,623 |  |  | 1,287,745 |
Total Investment Portfolio | $ | 34,989,899 |  |  | $ | 18,726,070 |
Carrying Value and Income from Partnerships | The underlying assets of the Partnerships are cash and marketable equity securities. Summary financial information, including the Company’s carrying value and income from the Partnerships, is as follows:
| As of
| September 30, 2014 |  | December 31, 2013
Total partnership assets | $ | 112,580,280 |  |  | $ | 122,106,403 |
Total partnership liabilities | 20,624,650 |  |  | 25,217,600 |
Net partnership assets | $ | 91,955,630 |  |  | $ | 96,888,803 |
DHCM’s portion of net assets | $ | 4,711,277 |  |  | $ | 3,001,461 |
| For the Nine Months Ended |  | For the Year Ended
| September 30, 2014 |  | December 31, 2013
Net partnership income | $ | 4,682,472 |  |  | $ | 24,294,495 |
DHCM’s portion of net income | $ | 286,013 |  |  | $ | 899,958 |

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- Definition Tabular disclosure of the summary of investment holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Article 12 + Details
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