In millions, except per share items | Apr-30-22 | Apr-30-21 | Apr-30-20 | Apr-30-19 | Apr-30-18 | Apr-30-17 | Apr-30-16 | Apr-30-15 |
| 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
Operating activities: | | | | | | | | |
Net income (loss) | 0.5 | 0.4 | -2.1 | 0.1 | -1.5 | -6.9 | -10.4 | -13.1 |
Adjustments to reconcile net income (loss) to net cash from operating activities: | | | | | | | | |
Stock-based compensation | 0.9 | 0.6 | 0.6 | 0.6 | 1.0 | 2.7 | 2.6 | 3.2 |
Depreciation and amortization expense | 1.6 | 1.2 | 0.8 | 0.6 | 0.4 | 0.2 | 0.2 | 0.2 |
Net gain on disposal of equipment | 0.0 | | -0.1 | | | | | |
Provision for doubtful accounts | 0.3 | 0.0 | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | |
Changes in operating assets and liabilities: | | | | | | | | |
Accounts receivable | -2.8 | -2.3 | -0.7 | -0.5 | -1.6 | -1.0 | -0.3 | 0.3 |
Prepaid expenses and other current assets | -0.2 | -0.6 | -0.1 | 0.0 | 0.0 | 0.1 | -0.1 | 0.0 |
Accounts payable | 1.0 | -1.2 | 0.3 | 0.7 | 0.3 | 0.0 | 0.5 | 0.4 |
Accrued liabilities | 0.2 | -0.3 | 1.4 | 0.6 | -0.1 | 0.4 | -0.1 | -0.2 |
Other current liabilities | | | | | | | | |
Other non-current liabilities | | 0.0 | 0.0 | | 0.0 | 0.0 | 0.1 | 0.1 |
Operating lease liabilities | -0.6 | -0.2 | -0.2 | | | | | |
Net cash provided by operating activities | 6.5 | -1.7 | 2.9 | 1.9 | -1.2 | -2.8 | -6.4 | -9.6 |
|
Investing activities: | | | | | | | | |
Purchase of property and equipment | -2.4 | -3.3 | -2.2 | -0.8 | -1.2 | -0.8 | -0.3 | -0.1 |
Net cash used in investing activities | -2.4 | -3.2 | -2.2 | -0.8 | -1.2 | -0.8 | -0.3 | -0.1 |
|
Financing activities: | | | | | | | | |
Net cash provided by financing activities | 0.2 | 1.2 | 4.4 | 1.2 | 0.0 | 4.3 | 0.0 | 13.2 |