| In millions, except per share items | Jun-30-23 | Dec-31-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Operating Activities | | | | | | | | |
| Net income (loss) | 3.5 | | 9.1 | 8.2 | 14.0 | 29.3 | 20.4 | 14.1 |
| |
| Adjustments to reconcile net income (loss) to net cash from (used in) operating activities: | | | | | | | | |
| Depreciation and amortization | | | 21.9 | 21.1 | 19.9 | 18.2 | 17.4 | 17.6 |
| Loss on disposal of property and equipment | | | | | 0.1 | 0.3 | | |
| Share-based compensation expense | | | 17.2 | 16.2 | 14.7 | 13.7 | 13.0 | 11.8 |
| Deferred income taxes | | | -4.6 | -4.9 | -5.3 | 1.6 | 1.3 | -0.9 |
| Amortization of operating lease right-of-use assets | | | 3.5 | 3.3 | 3.2 | 3.0 | 2.9 | 2.9 |
| Amortization of debt issuance costs | | | 1.0 | 1.0 | 0.9 | 0.9 | 0.9 | 0.8 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable and unbilled receivables | | | -21.4 | -50.0 | -1.4 | -19.9 | -4.2 | -15.4 |
| Inventories | | | -15.3 | -17.3 | -15.6 | -3.6 | -5.5 | -1.0 |
| Prepaid expenses | | | 3.4 | -1.7 | 2.6 | -6.8 | -0.3 | -1.1 |
| Other current assets | | | -9.9 | 8.0 | 3.9 | -1.2 | -2.9 | 3.1 |
| Investment in sales-type leases | | | -11.4 | -1.1 | 0.7 | 0.3 | 1.5 | 0.9 |
| Prepaid commissions | | | 1.9 | 4.2 | -5.8 | -2.9 | -0.9 | 2.7 |
| Other long-term assets | | | -0.8 | 2.2 | -5.8 | 1.0 | -0.6 | 2.2 |
| Accounts payable | | | -3.4 | 0.3 | -4.0 | 17.4 | 5.3 | 10.4 |
| Accrued compensation | | | 12.7 | -23.9 | 24.3 | -4.8 | 10.6 | -17.9 |
| Accrued liabilities | | | 3.9 | 0.8 | 14.7 | 10.0 | 5.5 | 4.7 |
| Deferred revenues | | | -18.4 | 19.8 | 3.0 | -6.2 | 5.7 | 21.7 |
| Operating lease liabilities | | | -3.7 | -3.5 | -3.1 | -3.1 | -3.1 | -3.1 |
| Other long-term liabilities | | | 1.5 | -0.5 | -5.8 | -8.7 | 0.2 | -0.6 |
| Net cash provided by (used in) operating activities | 3.5 | | -9.6 | -16.0 | 59.6 | 43.0 | 71.8 | 57.4 |
| |
| Investing Activities | | | | | | | | |
| External-use software development costs | | | -6.5 | | | | | |
| Purchases of property and equipment | | | -9.6 | -11.5 | -11.1 | -6.8 | -6.0 | -5.1 |
| Business acquisition, net of cash acquired | | | | -3.4 | -176.1 | -178.1 | | |
| Net cash used in investing activities | | | -6.8 | -18.7 | -192.4 | -193.6 | -13.4 | -13.1 |
| |
| Financing Activities | | | | | | | | |
| Proceeds from issuances under stock-based compensation plans | | | 2.2 | 19.0 | 13.4 | 21.6 | 11.5 | 20.8 |
| Employees’ taxes paid related to restricted stock units | | | -4.1 | -4.3 | -6.1 | -3.5 | -4.1 | -2.6 |
| Stock repurchases | | | | -52.2 | | | | |
| Net cash provided by (used in) financing activities | | | -1.5 | -32.1 | 6.7 | 18.3 | 6.8 | 15.6 |
| Net increase (decrease) in cash, cash equivalents, and restricted cash | | | -19.5 | -67.3 | -126.6 | -7.7 | 65.5 | 59.5 |
| |
| Reconciliation of cash, cash equivalents, and restricted cash to the Condensed Consolidated Balance Sheets: | | | | | | | | |
| Cash and cash equivalents | | | | | | | | |
| Restricted cash included in other current assets | | | | | | | | |
| Supplemental disclosure of non-cash investing activities | | | | | | | | |
| Unpaid purchases of property and equipment | | | 0.7 | 0.7 | 0.2 | 0.1 | 0.1 | 0.5 |
| Transfers between inventory and property and equipment, net | | | 0.3 | | | | 0.6 | 1.3 |