| 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 |
| Cash flows from operating activities: | | | | | | | | |
| Net loss | -3.9 | | | | -1.9 | | | |
| Adjustments to reconcile net loss to net cash used in operating activities: | | | | | | | | |
| Depreciation and amortization | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | |
| Amortization of right-of-use assets | 0.7 | 0.7 | 0.7 | 0.6 | 0.3 | 0.2 | | |
| Amortization of debt and warrant discounts | 0.1 | | | 0.0 | | | | |
| Inventory allowance | 0.3 | | | | | | | |
| Changes in operating assets and liabilities | | | | | | | | |
| Accounts receivable | 0.1 | -0.6 | -0.7 | -0.6 | 0.0 | 0.5 | 0.2 | |
| Prepaid expenses and other assets | 0.0 | | | | 1.0 | | | |
| Inventory | -1.3 | -1.4 | -2.8 | -3.7 | -2.4 | -2.2 | -0.9 | |
| Accounts payable | 0.6 | 0.7 | 0.8 | 0.6 | -0.1 | -0.3 | -0.4 | |
| Dividends payable | | | | | | | | |
| Lease and warranty liabilities | | | | | | | | |
| Other current liabilities | 0.2 | 0.8 | | 0.5 | 0.6 | 0.3 | | |
| Net cash used in operating activities | -4.2 | -4.4 | -4.4 | -6.1 | -6.0 | -5.0 | -4.3 | |
| |
| Cash flows from investing activities: | | | | | | | | |
| Purchase of property and equipment | -0.3 | -0.3 | -0.4 | -0.3 | -0.2 | -0.1 | 0.0 | |
| Cash used in investing activities | -0.3 | -0.3 | -0.4 | -0.3 | -0.2 | -0.1 | 0.0 | |
| |
| Cash flows from financing activities: | | | | | | | | |
| Proceeds from related party advances, net of payments | 0.7 | 0.0 | | | | | | |
| Proceeds from contribution from parent | 0.6 | | | | 2.1 | | | |
| Proceeds from issuance of warrants | 0.0 | | | | | | | |
| Proceeds from note payable, net of discount | 0.2 | | | | | | | |
| Net cash provided by financing activities | 4.5 | 4.7 | 5.0 | 6.3 | 6.3 | 5.1 | 4.2 | |
| Net (decrease) increase in cash and cash equivalents | 0.0 | 0.0 | | | 0.2 | 0.2 | | |