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Fair Value of Other Securities (Details 2) (USD $)
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3 Months Ended |
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Jun. 30, 2013
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Public company historical EBITDA analysis [Member]
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| Quantitative table for Valuation Techniques | |
| Other equity securities, at fair value | $ 21,239,935 |
| Valuation Technique | Public company historical EBITDA analysis |
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Public company historical EBITDA analysis [Member] | Minimum [Member]
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| Quantitative table for Valuation Techniques | |
| Historical EBITDA Valuation Multiples | 9.4 |
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Public company historical EBITDA analysis [Member] | Maximum [Member]
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| Quantitative table for Valuation Techniques | |
| Historical EBITDA Valuation Multiples | 13.2 |
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Public company historical EBITDA analysis [Member] | Weighted Average [Member]
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| Quantitative table for Valuation Techniques | |
| Historical EBITDA Valuation Multiples | 11.3 |
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Public company projected EBITDA analysis [Member]
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| Quantitative table for Valuation Techniques | |
| Valuation Technique | Public company projected EBITDA analysis |
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Public company projected EBITDA analysis [Member] | Minimum [Member]
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| Quantitative table for Valuation Techniques | |
| Projected EBITDA Valuation Multiples | 8.8 |
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Public company projected EBITDA analysis [Member] | Maximum [Member]
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| Quantitative table for Valuation Techniques | |
| Projected EBITDA Valuation Multiples | 11.5 |
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Public company projected EBITDA analysis [Member] | Weighted Average [Member]
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| Quantitative table for Valuation Techniques | |
| Projected EBITDA Valuation Multiples | 10.15 |
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M&A company analysis [Member]
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| Quantitative table for Valuation Techniques | |
| Valuation Technique | M&A company analysis |
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M&A company analysis [Member] | Minimum [Member]
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| Quantitative table for Valuation Techniques | |
| EV/LTM 2012 EBITDA | 8.8 |
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M&A company analysis [Member] | Maximum [Member]
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| Quantitative table for Valuation Techniques | |
| EV/LTM 2012 EBITDA | 10.6 |
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M&A company analysis [Member] | Weighted Average [Member]
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| Quantitative table for Valuation Techniques | |
| EV/LTM 2012 EBITDA | 9.7 |
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Discounted cash flow [Member]
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| Quantitative table for Valuation Techniques | |
| Valuation Technique | Discounted cash flow |
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Discounted cash flow [Member] | Minimum [Member]
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| Quantitative table for Valuation Techniques | |
| Weighted Average Cost of Capital | 9.50% |
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Discounted cash flow [Member] | Maximum [Member]
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| Quantitative table for Valuation Techniques | |
| Weighted Average Cost of Capital | 14.00% |
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Discounted cash flow [Member] | Weighted Average [Member]
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| Quantitative table for Valuation Techniques | |
| Weighted Average Cost of Capital | 11.80% |