| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 |
| | 8-K | 10-K | 10-K | 10-K | 8-K |
| Cash flows from operating activities | | | | | |
| Net income | 16.7 | 0.1 | -7.2 | -2.5 | -13.7 |
| |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | |
| Depreciation and amortization | 24.4 | 33.8 | 56.5 | 54.1 | 56.0 |
| Benefit from doubtful accounts | | 2.2 | 1.5 | 1.8 | 1.7 |
| Stock-based compensation expense | 36.5 | 29.4 | 21.1 | 8.7 | 1.8 |
| Deferred taxes | -1.4 | -1.9 | -4.1 | -4.7 | -10.5 |
| Amortization of debt issuance costs | 1.6 | 0.7 | | | |
| Operating lease right-of-use assets, net | | -0.7 | | | |
| Loss (gain) on foreign currency exchange rates | | 1.4 | 1.7 | -0.6 | |
| Other non-cash expenses | | | | -0.1 | |
| Changes in operating assets and liabilities, net of assets acquired and liabilities assumed in business combinations: | | | | | |
| Accounts receivable | -3.4 | -5.6 | -3.5 | -5.0 | -4.9 |
| Income tax receivable | | -6.0 | -0.2 | -0.3 | |
| Prepaid expenses and other assets | | -10.7 | -0.6 | -1.0 | |
| Accounts payable | -1.6 | -0.5 | 3.3 | -0.2 | 0.8 |
| Due to and from affiliates | | -8.3 | 6.2 | -3.8 | |
| Accrued liabilities and other | | 11.9 | 8.0 | -2.6 | |
| Income taxes payable | | 0.2 | 0.4 | 0.8 | |
| Deferred revenue | | 1.3 | 1.1 | -0.5 | |
| Other long-term assets | 1.1 | 0.2 | | | |
| Other long-term liabilities | | | | | 1.7 |
| Net cash provided by operating activities | 71.4 | 45.3 | 85.7 | 25.5 | 52.3 |
| |
| Cash flows from investing activities | | | | | |
| Purchases of property and equipment | | -30.7 | -11.9 | -5.8 | |
| Purchases of intangible assets | -8.2 | -4.2 | -4.2 | -2.4 | -0.5 |
| Net cash used in investing activities | -30.2 | -34.8 | -16.1 | -23.0 | -22.9 |
| |
| Cash flows from financing activities | | | | | |
| Payments of tax withholding obligations related to restricted stock units | | -2.2 | | | |
| Exercise of stock options | 0.1 | 0.0 | | | |
| Proceeds from issuance of common stock under employee stock purchase plan | 0.1 | | | | |
| Repayments of borrowings from Credit Agreement | | -0.9 | | | |
| Net cash used in financing activities | -10.4 | -42.3 | -10.6 | -42.8 | |
| Effect of exchange rate changes on cash and cash equivalents | | -1.2 | 1.5 | 1.8 | |
| |
| Cash and cash equivalents | | | | | |
| |
| Supplemental disclosure of cash flow information: | | | | | |
| Cash paid for interest | | 20.4 | 26.6 | 52.7 | 24.9 |
| Cash paid for income taxes | | 19.0 | 14.2 | 8.9 | 3.8 |
| Supplemental disclosure of non-cash activities: | | | | | |
| Right-of-use assets obtained in exchange for operating lease liabilities | | 31.1 | 5.8 | 2.3 | |