| In millions, except per share items | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 |
| | 10-K | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Assets | | | | | | | | |
| Current assets: | | | | | | | | |
| Cash and cash equivalents | 120.8 | 72.2 | 43.4 | 32.9 | 41.7 | 63.4 | 57.8 | 35.4 |
| Accounts receivable, net | 67.9 | 52.3 | 45.6 | 47.2 | 44.4 | 43.1 | 40.2 | 44.6 |
| Inventory, net | 81.3 | 70.3 | 84.5 | 85.2 | 76.8 | 54.5 | 56.8 | 68.6 |
| Prepaid expenses and other current assets | 33.3 | 21.8 | 19.6 | 19.8 | 18.4 | 21.7 | 15.4 | 11.7 |
| Total current assets | 303.3 | 216.6 | 193.0 | 185.1 | 181.3 | 182.7 | 170.1 | 160.3 |
| Property and equipment, net | 7.9 | 9.3 | 10.6 | 12.2 | 13.9 | 15.6 | 13.8 | 16.8 |
| Intangible assets, net | 78.0 | 84.1 | 86.2 | 88.2 | 90.2 | 92.3 | 94.3 | 96.3 |
| Goodwill | 171.6 | 171.6 | 171.6 | 171.6 | 171.6 | 171.6 | 171.6 | 171.6 |
| Investments | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 |
| Other assets | 31.9 | 29.3 | 30.4 | 30.9 | 33.0 | 33.3 | 34.7 | 33.0 |
| Total assets | 595.6 | 513.9 | 494.6 | 491.0 | 493.0 | 498.4 | 487.4 | 480.9 |
| |
| Liabilities and stockholders' equity | | | | | | | | |
| Current liabilities: | | | | | | | | |
| Current portion of long-term debt and finance lease obligations | 5.6 | 5.8 | 5.8 | 5.8 | 19.3 | 32.2 | 16.3 | 15.3 |
| Accounts payable | 31.4 | 16.0 | 19.2 | 22.8 | 19.3 | 17.1 | 15.7 | 20.1 |
| Accrued expenses and other current liabilities | 71.0 | 39.9 | 40.0 | 34.0 | 32.7 | 33.6 | 41.4 | 31.3 |
| Total current liabilities | 108.0 | 61.7 | 65.0 | 62.5 | 71.2 | 83.0 | 73.3 | 66.7 |
| Long-term debt and finance lease obligations | 60.9 | 89.7 | 91.1 | 92.5 | 93.9 | 95.3 | 110.3 | 114.4 |
| Deferred tax liabilities | 3.7 | 13.5 | 9.6 | 13.1 | 15.1 | 17.8 | 13.5 | 16.2 |
| Long-term operating lease obligations | 11.2 | 14.6 | 15.7 | 16.7 | 17.9 | 19.1 | 20.1 | 18.4 |
| Other long-term liabilities | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.7 | 0.6 | 0.6 |
| Total liabilities | 184.6 | 180.4 | 182.2 | 185.5 | 198.9 | 215.8 | 217.7 | 216.3 |
| |
| Commitments and contingencies (Note 9) | | | | | | | | |
| Stockholders' equity: | | | | | | | | |
| Common stock | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Additional paid-in capital | 832.5 | 802.0 | 795.4 | 790.0 | 784.9 | 779.1 | 774.4 | 769.4 |
| Accumulated deficit | -422.0 | -469.1 | -483.5 | -485.1 | -491.3 | -497.0 | -505.3 | -505.3 |
| Total stockholders' equity | 411.0 | 333.4 | 312.4 | 305.5 | 294.1 | 282.6 | 269.6 | 264.6 |
| Total liabilities and stockholders' equity | 595.6 | 513.9 | 494.6 | 491.0 | 493.0 | 498.4 | 487.4 | 480.9 |