| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-K | 10-Q |
| Operating activities | | | | | | | |
| Net loss | | | -91.7 | -82.0 | -87.5 | -73.2 | -39.2 |
| |
| Adjustments to reconcile net loss to cash used in operating activities: | | | | | | | |
| Stock-based compensation expense | | | 25.8 | 21.2 | 15.7 | | 13.4 |
| Depreciation and amortization | | | 2.4 | 2.1 | 2.0 | | 2.1 |
| Noncash lease expense | | | 0.5 | 0.4 | | | |
| Change in fair value of warrant liabilities | | | -20.2 | -5.7 | 7.0 | 8.1 | |
| Change in fair value contingent consideration | | | 1.9 | -14.6 | 1.9 | 5.7 | |
| Amortization of premium (accretion of discount) on available-for-sale securities, net | | | 0.2 | 0.3 | 0.3 | | 0.2 |
| Provision (recovery) for expected credit losses | | | 0.0 | 0.1 | 0.0 | | 0.0 |
| Other | | | 0.0 | 0.0 | 0.0 | | 0.0 |
| Changes in operating assets and liabilities: | | | | | | | |
| Accounts receivable | | | 1.0 | -6.0 | 1.5 | | -5.9 |
| Inventory | | | -8.9 | -2.0 | -0.8 | | 0.8 |
| Deferred costs of services | | | 0.9 | 0.2 | 0.2 | | 0.8 |
| Prepaid expenses and other current assets | | | 0.3 | -0.3 | -0.3 | | -0.3 |
| Other long-term assets | | | 1.2 | -0.1 | | | |
| Accounts payable | | | 7.9 | 5.8 | 4.6 | | 1.8 |
| Deferred revenue | | | 30.5 | 29.5 | 1.3 | | 1.5 |
| Accrued and other liabilities | | | 1.9 | 0.7 | 3.6 | | -0.6 |
| Net cash used in operating activities | | | -75.8 | -46.3 | -46.1 | -32.2 | -14.7 |
| |
| Investing activities | | | | | | | |
| Purchases of property and equipment | | | -5.8 | -6.6 | -4.7 | | -1.4 |
| Purchases of available-for-sale securities | | | -150.3 | -140.1 | -140.1 | | -142.1 |
| Proceeds from maturities of available-for-sale securities | | | 128.7 | | | | |
| Net cash (used in) provided by investing activities | | | -0.9 | -6.0 | -87.3 | | -112.6 |
| |
| Financing activities | | | | | | | |
| Proceeds from exercise of stock options and employee stock purchase plan | | | 6.0 | 4.3 | 3.9 | | 3.0 |
| Net cash provided by financing activities | | | 5.3 | -37.4 | -38.1 | | 141.0 |
| Effect of exchange rates on cash, cash equivalents and restricted cash | | | 0.0 | 0.0 | 0.0 | | 0.0 |
| |
| Supplemental disclosure of non-cash investing and financing activities: | | | | | | | |
| Capital expenditures included in accounts payable | | | 0.9 | 1.7 | 0.9 | | 0.7 |
| Operating lease assets obtained in exchange for lease obligations | | | | 4.1 | | | |
| Issuance of Common Stock for services | | | | 1.0 | 1.1 | | 0.3 |
| Reconciliation of cash, cash equivalents and restricted cash | | | | | | | |
| Cash and cash equivalents | | | | | | | |