| 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-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Operating activities | | | | | | | | |
| Net loss | -18.3 | -12.0 | -9.9 | -7.1 | -4.8 | -0.7 | 0.9 | 3.1 |
| |
| Adjustments to reconcile net (loss) to net cash used in operating activities: | | | | | | | | |
| Amortization of warrant debt, debt discount and debt issuance costs | 0.5 | 0.3 | 0.0 | | 0.0 | 0.0 | 0.0 | |
| Depreciation and amortization of property and equipment | 2.1 | 1.8 | 1.5 | 1.3 | 1.4 | 1.3 | 1.2 | 1.3 |
| Deferred income taxes | | 0.1 | -0.1 | -0.2 | -0.4 | | | |
| Loss on sale of fixed assets | -0.1 | | | 0.0 | 0.2 | | 0.2 | 0.0 |
| Provision for doubtful accounts | -0.3 | -0.1 | -0.1 | | -0.1 | -0.1 | -0.1 | |
| Stock-based compensation expense related to stock options | 0.6 | 0.8 | 0.8 | 0.7 | 0.7 | 0.6 | 0.6 | 0.5 |
| Stock issued for board of director fees | 0.0 | | | | 0.0 | | | |
| Remeasurement (gain) on derivative liability | | | | -0.1 | -0.1 | -0.1 | 0.0 | 0.0 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable | 0.1 | -1.2 | 1.8 | 0.0 | 0.1 | 0.6 | -0.4 | 0.8 |
| Inventories | -1.5 | -1.7 | -1.8 | -1.0 | -0.6 | 0.0 | 0.5 | 0.7 |
| Investment in sales-type lease | 0.2 | 0.2 | 0.1 | 0.1 | -0.3 | -0.4 | -0.5 | -0.5 |
| Capitalized commissions | 0.0 | | 0.2 | 0.2 | 0.0 | 0.0 | 0.0 | 0.1 |
| Prepaid expenses and other current assets | -0.2 | -0.5 | -0.2 | 0.0 | -0.5 | -0.1 | -0.2 | -0.1 |
| Right-of-use assets under operating leases | 0.2 | 0.7 | 0.9 | 0.2 | 0.5 | -1.1 | -1.0 | -0.4 |
| Operating lease obligations | -0.2 | -0.7 | -0.9 | -0.2 | -0.5 | 1.1 | 1.1 | 0.4 |
| Hardware receivable, long-term | 0.1 | -1.2 | 1.8 | 0.0 | 0.1 | 0.6 | -0.4 | 0.8 |
| Other long-term assets | 0.0 | 0.0 | 0.4 | 0.4 | 0.3 | 0.0 | -0.4 | -0.4 |
| Accounts payable and accrued liabilities | 0.1 | -0.2 | 0.6 | 0.5 | 1.5 | 0.8 | 0.9 | -1.0 |
| Other long-term liabilities | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | -0.1 |
| Unearned revenue | 1.6 | 1.6 | -0.5 | -0.9 | -0.7 | -0.9 | -0.7 | -1.0 |
| Net cash used in operating activities | -10.7 | -10.5 | -6.9 | -5.6 | -3.0 | -1.0 | -0.1 | 1.2 |
| |
| Investing activities | | | | | | | | |
| Purchases of property and equipment | -0.6 | -1.8 | -2.2 | -2.6 | -3.2 | -2.1 | -1.8 | -1.5 |
| Capitalization of software development costs | | -3.0 | -2.9 | -2.4 | -1.7 | -1.0 | -0.3 | |
| Net cash used in investing activities | -2.9 | -4.8 | -5.1 | -5.0 | -4.9 | -3.0 | -2.1 | -1.5 |
| |
| Financing activities | | | | | | | | |
| Proceeds from notes payable | 0.3 | 8.8 | 8.5 | | | | | |
| Payments on notes payable | -0.4 | -0.3 | 0.0 | | | | | |
| Payment on debt issuance costs | | | -0.2 | | | | | |
| Proceeds from issuance of common stock and warrants | | 5.2 | 5.2 | 4.0 | 7.4 | 3.5 | | 3.4 |
| Proceeds from exercise of common stock options | | 0.0 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 |
| Payments on finance lease obligations | 0.0 | 0.0 | -0.1 | -0.1 | -0.1 | -0.1 | -0.1 | -0.1 |
| Net cash provided by financing activities | 11.4 | 13.9 | 13.9 | 4.5 | 7.4 | 3.2 | 3.0 | 2.7 |
| Changes in cash and cash equivalents due to changes in foreign currency | -0.2 | -0.3 | -0.5 | -0.5 | -0.5 | -0.2 | -0.1 | 0.0 |
| |
| Supplemental cash flow information: | | | | | | | | |
| Interest paid | 0.6 | 0.3 | 0.1 | | | | 0.0 | |
| Income taxes paid, foreign | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Non-cash financing and investing activities: | | | | | | | | |
| Property and equipment financed by finance lease or accounts payable | 0.0 | -0.1 | -0.2 | 0.1 | 0.1 | 0.2 | 0.3 | |