| In millions, except per share items | Sep-30-22 | Sep-30-21 | Sep-30-20 | Sep-30-19 | Sep-30-18 | Sep-30-17 | Sep-30-16 | Sep-30-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Operating activities | | | | | | | | |
| Net loss | -7.1 | 3.1 | -0.2 | -3.6 | -12.2 | -5.0 | -3.3 | -4.5 |
| |
| Adjustments to reconcile net (loss) to net cash used in operating activities: | | | | | | | | |
| Depreciation and amortization of property and equipment | 1.3 | 1.3 | 0.9 | 1.0 | 1.1 | 2.0 | 2.2 | 2.3 |
| Deferred income taxes | -0.2 | | | | -4.5 | -0.1 | 0.3 | 0.1 |
| Loss on sale of fixed assets | 0.0 | 0.0 | | 0.0 | | 0.0 | 0.1 | |
| Provision for doubtful accounts | -0.1 | 0.0 | 0.1 | 0.1 | 0.5 | 0.3 | 0.1 | 0.1 |
| Stock-based compensation expense related to stock options | 0.7 | 0.5 | 0.2 | 0.2 | | | | |
| Remeasurement (gain) on derivative liability | -0.1 | 0.0 | 0.1 | 0.0 | 0.0 | -0.1 | -0.1 | 0.0 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable | 0.0 | 0.8 | 0.3 | 1.0 | 0.3 | 1.6 | 2.9 | -4.4 |
| Inventories | -1.0 | 0.7 | -0.7 | 0.5 | 0.0 | 0.9 | 0.5 | -0.3 |
| Investment in sales-type lease | 0.1 | -0.5 | 0.0 | 0.1 | | | | |
| Capitalized commissions | 0.2 | 0.1 | 0.0 | 0.1 | | | | |
| Prepaid expenses and other current assets | 0.0 | -0.1 | -0.1 | 0.0 | 0.1 | 0.1 | -0.5 | 0.2 |
| Right-of-use assets under operating leases | 0.2 | -0.4 | 0.5 | | | | | |
| Operating lease obligations | -0.2 | 0.4 | -0.5 | | | | | |
| Hardware receivable, long-term | 0.0 | 0.8 | 0.3 | 1.0 | 0.3 | 1.6 | 2.9 | -4.4 |
| Other long-term assets | 0.4 | -0.4 | | | | | | |
| Accounts payable and accrued liabilities | 0.5 | -1.0 | 1.5 | -0.2 | 0.3 | -0.1 | -1.0 | 0.1 |
| Other long-term liabilities | 0.1 | -0.1 | 0.0 | -0.1 | -0.2 | 0.1 | -0.1 | -0.1 |
| Unearned revenue | -0.9 | -1.0 | 0.6 | -0.9 | -0.9 | | | |
| Net cash used in operating activities | -5.6 | 1.2 | 3.3 | -0.7 | -0.6 | 0.7 | 1.7 | -3.1 |
| |
| Investing activities | | | | | | | | |
| Purchases of property and equipment | -2.6 | -1.5 | -1.7 | -0.4 | -0.8 | -0.8 | -0.3 | -0.7 |
| Capitalization of software development costs | -2.4 | | | | | | | |
| Net cash used in investing activities | -5.0 | -1.5 | -1.7 | -0.4 | -0.8 | -0.8 | -0.3 | -0.7 |
| |
| Financing activities | | | | | | | | |
| Proceeds from notes payable | 0.4 | | 3.2 | 5.5 | 3.0 | | 0.5 | 2.3 |
| Payments on notes payable | | -0.9 | -1.4 | -0.8 | -0.8 | -1.7 | -1.7 | -2.9 |
| Payment on debt issuance costs | | | | -0.1 | -0.1 | 0.0 | 0.0 | -0.1 |
| Proceeds from issuance of common stock and warrants | 4.0 | 3.4 | 0.1 | 0.9 | | 1.3 | 0.1 | 0.7 |
| Proceeds from exercise of common stock options | 0.1 | 0.3 | 0.1 | 0.9 | | | | 0.0 |
| Payments on finance lease obligations | -0.1 | -0.1 | | | | | | |
| Net cash provided by financing activities | 4.5 | 2.7 | 1.7 | 4.3 | 1.5 | -0.5 | -1.6 | 1.6 |
| Changes in cash and cash equivalents due to changes in foreign currency | -0.5 | 0.0 | 0.0 | 0.0 | | | | |
| |
| Supplemental cash flow information: | | | | | | | | |
| Interest paid | 0.0 | 0.0 | 0.1 | 0.6 | 0.4 | 0.5 | 0.5 | 0.4 |
| Income taxes paid, foreign | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 |
| Non-cash financing and investing activities: | | | | | | | | |
| Property and equipment financed by finance lease or accounts payable | 0.1 | 0.2 | 0.7 | 0.2 | | | | |