| 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 | 10-K | 10-K | 10-K |
| Interest income from loans | 6.8 | 5.6 | 6.0 | | | | | |
| Origination fees | 1.8 | 1.2 | 1.0 | 1.2 | 1.1 | 0.9 | 0.8 | 0.6 |
| Total Revenue | 8.6 | 6.8 | 7.0 | 7.3 | 7.2 | 5.9 | 4.6 | 4.0 |
| Total Revenue growth | 25.9% | -2.8% | -4.5% | 1.6% | 22.1% | 27.3% | 16.2% | 37.8% |
| Operating costs and expenses: | | | | | | | | |
| Interest and amortization of deferred financing costs | -1.8 | -1.0 | -1.4 | -1.6 | -1.7 | -1.2 | -0.8 | -0.7 |
| Referral fees | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| General and administrative expenses | 1.5 | 1.3 | 1.4 | 1.2 | 1.3 | 1.2 | 1.0 | 1.0 |
| Total operating costs and expenses | 3.4 | 2.4 | 2.8 | 2.8 | 3.0 | 2.5 | 1.8 | 1.7 |
| Income from operations | 5.2 | 4.4 | 4.2 | 4.5 | 4.2 | 3.5 | 2.9 | 2.3 |
| Operating margin | 60.6% | 64.7% | 60.1% | 61.3% | 58.2% | 58.5% | 61.4% | 56.7% |
| Other income | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | | 0.0 |
| Income before income tax expense | 5.2 | 4.4 | 4.2 | 4.5 | 4.2 | 3.4 | 2.8 | 2.2 |
| Income tax expense | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Net income | 5.2 | 4.4 | 4.2 | 4.5 | 4.2 | 3.4 | 2.8 | 2.2 |
| |
| Basic and diluted net income per common share outstanding: | | | | | | | | |
| —Basic | $0.45 | $0.42 | $0.44 | $0.47 | $0.48 | $0.42 | $0.37 | $0.33 |
| —Diluted | $0.45 | $0.42 | $0.44 | $0.47 | $0.48 | $0.42 | $0.37 | $0.33 |
| |
| Weighted average number of common shares outstanding | | | | | | | | |
| —Basic | 11.5 | 10.5 | 9.6 | 9.7 | 8.8 | 8.1 | 7.6 | 6.8 |
| —Diluted | 11.5 | 10.5 | 9.6 | 9.7 | 8.8 | 8.1 | 7.6 | 6.8 |