| 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 |
| Assets | | | | | | | | |
| Loans receivable | 74.5 | 65.7 | | | | | | 20.2 |
| Interest receivable on loans | 1.4 | 1.0 | 0.8 | 0.7 | 0.6 | 0.5 | 0.3 | 0.4 |
| Cash | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | | |
| Other assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Operating lease right-of-use asset, net | 0.3 | 0.3 | 0.4 | 0.1 | | | | |
| Deferred financing costs, net | 0.0 | 0.0 | 0.0 | 0.0 | | | | |
| Total assets | 76.3 | 67.2 | 59.8 | 54.4 | 55.9 | 45.9 | 35.3 | 31.7 |
| |
| Liabilities and Stockholders’ Equity | | | | | | | | |
| Liabilities: | | | | | | | | |
| Line of credit | 25.0 | 15.6 | 20.3 | 15.2 | 16.6 | 16.9 | 6.5 | |
| Senior secured notes | 5.8 | 5.7 | 5.6 | 5.5 | 5.5 | 5.4 | 5.3 | |
| Deferred origination fees | 0.7 | 0.6 | 0.4 | 0.3 | 0.4 | 0.3 | 0.3 | 0.3 |
| Accounts payable and accrued expenses | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 |
| Operating lease liability | 0.3 | 0.3 | 0.4 | 0.1 | | | | |
| Dividends payable | 1.4 | 1.4 | 1.1 | 1.2 | 1.2 | 0.9 | 0.8 | 0.6 |
| Total liabilities | 33.4 | 23.8 | 27.9 | 22.5 | 23.8 | 23.7 | 13.0 | 13.9 |
| |
| Commitments and contingencies | | | | | | | | |
| Stockholders’ equity: | | | | | | | | |
| Preferred shares - $.01 par value; 5,000,000 shares authorized; none issued | | | | | | | | |
| Common shares | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Additional paid-in capital | 45.5 | 45.5 | 33.2 | 33.1 | 33.1 | 23.2 | 23.1 | 18.5 |
| Treasury stock, at cost – 262,113 shares | -0.8 | -0.8 | -0.8 | -0.6 | -0.6 | -0.5 | -0.4 | -0.4 |
| Accumulated deficit | -1.9 | -1.3 | -0.4 | -0.6 | -0.4 | -0.4 | -0.5 | -0.4 |
| Total stockholders’ equity | 42.9 | 43.4 | 32.0 | 31.9 | 32.1 | 22.2 | 22.3 | 17.7 |
| Total liabilities and stockholders’ equity | 76.3 | 67.2 | 59.8 | 54.4 | 55.9 | 45.9 | 35.3 | 31.7 |