| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Current assets: | | | | | | | | |
| Cash and cash equivalents | 7.1 | 6.9 | 8.0 | 7.2 | 5.9 | 6.5 | 6.8 | 7.3 |
| Accounts receivable, net of allowance of $422,671 and $490,311 as of June 30, 2023 and December 31, 2022, respectively | 2.2 | 2.2 | 2.2 | 2.3 | 2.2 | 1.8 | 1.9 | 1.6 |
| Unbilled services | 0.5 | 0.9 | 0.4 | 0.4 | 0.3 | 0.6 | 0.3 | 0.2 |
| Deferred charges | 2.0 | 1.8 | 1.5 | 1.1 | | | | |
| Prepaid expenses and other current assets | 1.5 | 1.7 | 1.6 | 1.0 | 1.5 | 1.5 | 1.7 | 0.7 |
| Total current assets | 13.4 | 13.6 | 13.7 | 12.0 | 10.0 | 10.4 | 10.7 | 9.8 |
| Property and equipment, net | 0.6 | 0.6 | 0.7 | 0.8 | 0.9 | 0.6 | 0.6 | 0.7 |
| Operating lease right-of-use assets | 0.5 | 0.4 | | | | | | |
| Intangible assets, net | 3.9 | 4.1 | 4.3 | 4.6 | 4.7 | 4.9 | 3.5 | 3.6 |
| Goodwill | 1.1 | 1.1 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Deferred tax assets | 0.9 | 1.0 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 0.9 |
| Deposits and other assets | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Total assets | 20.6 | 21.1 | 21.4 | 20.0 | 18.3 | 18.7 | 18.0 | 17.2 |
| |
| Current liabilities: | | | | | | | | |
| Accounts payable | 2.8 | 2.8 | 3.3 | 2.5 | 1.9 | 2.1 | 2.0 | 1.4 |
| Accrued expenses | 2.2 | 2.2 | 2.4 | 2.1 | 1.4 | 1.9 | 1.7 | 1.6 |
| Accrued interest | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Long-term debt – current portion | 0.5 | 0.5 | 0.7 | 0.6 | 0.5 | 0.5 | 0.3 | 0.4 |
| Long-term debt – related party – current portion | 0.1 | 0.1 | | | | | | |
| Finance lease obligations – current portion | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 |
| Operating lease liabilities – current portion | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 |
| Deferred revenue | 3.4 | 4.0 | 3.8 | 3.1 | 2.6 | 2.5 | 2.5 | 2.3 |
| Total current liabilities | 9.5 | 10.2 | 10.8 | 9.1 | 7.2 | 7.7 | 7.4 | 6.4 |
| Long-term debt net of current portion | 0.5 | 0.6 | 0.7 | 0.8 | 1.0 | 1.1 | 0.5 | 0.6 |
| Finance lease obligations net of current portion | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.2 | 0.2 | 0.2 |
| Operating lease liabilities net of current portion | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.5 | 0.6 |
| Total liabilities | 10.4 | 11.2 | 11.9 | 10.5 | 9.0 | 9.3 | 8.6 | 7.9 |
| |
| Commitments and contingencies | | | | | | | | |
| Stockholders’ equity: | | | | | | | | |
| Common stock, value | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Additional paid-in capital | 10.5 | 10.5 | 10.4 | 10.4 | 10.0 | 10.0 | 10.0 | 9.6 |
| Accumulated deficit | -0.3 | -0.6 | -0.9 | -0.9 | -0.7 | -0.6 | -0.6 | -0.2 |
| Total stockholders’ equity | 10.2 | 9.9 | 9.6 | 9.5 | 9.3 | 9.4 | 9.4 | 9.4 |
| Total liabilities and stockholders’ equity | 20.6 | 21.1 | 21.4 | 20.0 | 18.3 | 18.7 | 18.0 | 17.2 |