| In millions, except per share items | Jun-30-19 | Jun-30-18 | Jun-30-17 | Jun-30-16 | Jun-30-15 | Jun-30-14 | Jun-30-13 | Jun-30-12 |
| | 10-K/A | 10-K/A | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net revenues | 37.7 | 35.8 | 31.6 | 32.2 | 31.6 | 30.7 | 27.5 | 26.1 |
| Net revenues growth | 5.4% | 13.2% | -1.9% | 1.8% | 3.1% | 11.7% | 5.3% | 1.8% |
| Cost of revenues | 16.7 | 16.1 | 14.2 | 14.6 | 13.8 | 13.5 | 11.4 | 10.7 |
| Gross Profit | 21.0 | 19.7 | 17.4 | 17.6 | 17.9 | 17.2 | 16.1 | 15.4 |
| Gross margin | 55.6% | 55.0% | 55.1% | 54.7% | 56.5% | 56.0% | 58.5% | 59.1% |
| |
| Operating Expenses | | | | | | | | |
| Research and development | 5.8 | 4.7 | 3.8 | 3.8 | 3.9 | 3.7 | 3.4 | 3.3 |
| Sales and marketing | 3.3 | 3.5 | 3.7 | 4.0 | 4.3 | 4.4 | 3.3 | 2.7 |
| General and administrative | 6.6 | 6.4 | 5.5 | 5.7 | 5.5 | 5.6 | 4.2 | 3.4 |
| Depreciation and amortization | 0.2 | 0.2 | 0.2 | 0.4 | 0.4 | 1.0 | 1.1 | 1.2 |
| Total Operating Expenses | 16.0 | 14.8 | 13.2 | 13.8 | 14.0 | 14.7 | 12.1 | 10.6 |
| Operating Income | 4.9 | 4.9 | 4.2 | 3.8 | 3.8 | 2.5 | 4.0 | 4.8 |
| Operating margin | 13.1% | 13.7% | 13.3% | 11.8% | 12.1% | 8.0% | 14.6% | 18.4% |
| |
| Other Income (Expense) | | | | | | | | |
| Interest expense, net | -0.4 | -0.4 | -0.6 | -0.3 | 0.0 | 0.0 | -0.1 | -0.2 |
| Total other expense, net | -0.4 | -0.4 | -0.6 | -0.1 | 0.0 | | -0.3 | 0.3 |
| Income before provision for income taxes | 4.6 | 4.5 | 3.7 | 3.7 | 3.8 | 2.4 | 3.7 | 5.0 |
| Provision for income taxes | 0.9 | 1.3 | -0.9 | 0.2 | 0.8 | 0.7 | 0.7 | 1.0 |
| Net Income | 3.7 | 3.2 | 4.6 | 3.6 | 3.0 | 1.7 | 3.0 | 4.1 |
| |
| Earnings per share attributed to common stockholders - basic | $0.31 | $0.27 | $0.39 | $0.29 | $0.22 | $0.13 | $0.24 | $0.29 |
| Earnings per share attributed to common stockholders - diluted | $0.30 | $0.27 | $0.39 | $0.28 | $0.22 | $0.13 | $0.24 | $0.29 |
| |
| Weighted average common shares outstanding – basic (in shares) | 12.2 | 11.8 | 11.7 | 12.3 | 13.4 | 13.1 | 12.7 | 14.0 |
| Weighted average common shares outstanding – diluted (in shares) | 12.2 | 11.9 | 11.8 | 12.5 | 13.5 | 13.2 | 12.8 | 14.3 |
| Net Income | 3.7 | 3.2 | 4.6 | 3.6 | 3.0 | 1.7 | 3.0 | 4.1 |
| Foreign currency translation gain (loss) | -0.5 | 0.0 | -0.3 | -1.7 | -1.2 | 1.1 | -0.2 | -0.4 |
| Total Comprehensive Income | 3.2 | 3.3 | 4.3 | 1.8 | 1.8 | 2.8 | 2.8 | 3.7 |