In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | 10-K | 10-K/A |
Investment income: | | | | | | | | |
Interest income | | | | | | | | |
|
Dividend income | | | | | | | | |
Other income | 0.3 | 0.0 | | | | | | |
|
Expenses: | | | | | | | | |
Base management fees (Note 4) | 28.8 | 28.3 | 28.6 | | | | | |
Incentive fees (Note 4) | 21.4 | 17.7 | 18.6 | | | | | |
Professional fees | 3.1 | 3.2 | 3.1 | | | | | |
Administrative service fees (Note 4) | 1.6 | 1.3 | 0.7 | | | | | |
Directors’ fees and expenses | 0.6 | 0.6 | 0.4 | | | | | |
Other general and administrative | 1.9 | 1.8 | 1.8 | | | | | |
Total expenses | 101.4 | 83.6 | 92.7 | | | | | |
Net investment income (loss) before taxes | 105.9 | 87.6 | 89.4 | 107.7 | | 92.2 | 59.6 | 35.5 |
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Net realized gain (loss) and net change in unrealized appreciation (depreciation): | | | | | | | | |
Net realized gain (loss) on investments: | | | | | | | | |
Net realized currency gain (loss) on non-investment assets and liabilities | -0.4 | -0.2 | 0.5 | | | | | |
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Net change in unrealized appreciation (depreciation) on investments: | | | | | | | | |
|
Net change in unrealized currency gains (losses) on non-investment assets and liabilities | | | | | | | | |
Net realized gain (loss) and net change in unrealized appreciation (depreciation) on investments and non-investment assets and liabilities | | | | | | | | |
Net increase (decrease) in net assets resulting from operations | 85.6 | 160.4 | 6.8 | | | | | |
Preferred stock dividend | 3.5 | 3.5 | 2.3 | | | | | |
Net increase (decrease) in net assets resulting from operations attributable to Common Stockholders | 82.1 | 156.9 | 4.6 | | | | | |
|
Basic and diluted earnings per share | | | | | | | | |
Basic (in dollars per share) | $1.58 | $2.89 | $0.08 | $60,189,502.00 | | $1.59 | $1.93 | $0.75 |
Diluted (in dollars per share) | $1.49 | $2.69 | $0.08 | $60,189,502.00 | | $1.59 | $1.93 | $0.75 |
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Weighted-average common shares outstanding | | | | | | | | |
Basic (in shares) | 52.1 | 54.2 | 56.4 | | | 52,997.5 | 36,152.4 | 24,830.2 |
Diluted (in shares) | 57.5 | 59.5 | 56.4 | | | | | |