| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q/A | 10-Q | 10-Q | 10-K | 10-Q/A |
| Cash flows from operating activities | | | | | | | | |
| Net loss | -2.9 | -12.7 | 4.0 | -21.1 | -20.1 | -18.2 | -16.8 | -16.8 |
| |
| Adjustments to reconcile net loss to net cash provided by operating activities: | | | | | | | | |
| Depreciation and amortization | 3.2 | 3.5 | 3.8 | 3.8 | 3.5 | 3.8 | 4.2 | 4.4 |
| Stock-based compensation expense | 14.6 | 12.1 | 12.7 | 13.5 | 14.3 | 12.8 | 11.5 | 12.3 |
| Amortization of debt discount and issuance costs | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | | 0.5 |
| Unrealized (gain) loss on foreign currency exchange | -0.5 | -1.1 | -6.6 | 12.6 | 4.7 | 0.9 | | 2.7 |
| Accretion on short-term investments | -2.0 | -1.6 | -0.3 | | | | | |
| Non-cash operating lease expenses | 3.1 | 1.9 | | | 0.7 | 0.8 | | |
| Amortization of creator signing fees | 0.3 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.6 | 0.7 |
| Adjustments related to creator advances, creator signing fees, and allowance for credit losses | -0.8 | -0.7 | -0.9 | 0.2 | -0.7 | -1.3 | | 0.1 |
| Provision for chargebacks and refunds | 1.0 | 4.7 | | 2.7 | 4.4 | 3.8 | 0.8 | 4.8 |
| Other | 0.6 | 0.3 | 0.2 | 0.0 | 0.6 | 0.0 | 0.1 | 0.1 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable | -0.2 | -0.5 | -0.5 | -0.6 | -0.2 | -0.9 | 0.2 | -0.3 |
| Funds receivable | 6.3 | 17.8 | -16.5 | -5.9 | 2.7 | -6.2 | 0.2 | -3.3 |
| Creator signing fees and creator advances | 0.0 | 0.7 | 1.5 | 2.9 | 1.0 | 1.6 | | 4.5 |
| Prepaid expenses and other assets | 1.3 | -0.2 | -3.7 | 0.9 | 0.5 | 7.1 | 2.7 | -13.0 |
| Accounts payable, creators | -41.9 | 57.7 | -51.6 | 27.3 | -33.6 | 95.7 | -38.5 | -16.7 |
| Accounts payable | -0.4 | -0.1 | 0.3 | -0.8 | 0.3 | 0.1 | 0.3 | -0.6 |
| Chargebacks and refunds reserve | -3.7 | -4.6 | -4.5 | -3.8 | -3.9 | -4.2 | -5.8 | -5.3 |
| Accrued compensation and benefits | 0.8 | 0.1 | 0.3 | 1.9 | 1.9 | -3.4 | 1.7 | 2.0 |
| Accrued taxes | -4.0 | -4.6 | 2.9 | -1.4 | -1.3 | -3.4 | 4.9 | 1.8 |
| Operating lease liabilities | -0.9 | -1.1 | -1.0 | -1.1 | -1.1 | -1.1 | -1.0 | -0.8 |
| Other accrued liabilities | -1.4 | 2.8 | -3.0 | 3.0 | -1.1 | -11.2 | -5.5 | 13.5 |
| Net cash provided by operating activities | -27.0 | 75.2 | -63.9 | 33.4 | -26.7 | 77.5 | -30.4 | -11.4 |
| |
| Cash flows from investing activities | | | | | | | | |
| Purchase of short-term investments | -55.9 | -94.7 | -83.9 | | | | | |
| Maturities of short-term investments | 85.5 | | | | | | | |
| Purchases of property and equipment | -0.2 | -0.3 | -0.2 | -0.5 | -0.4 | -0.3 | -0.5 | -0.2 |
| Capitalized internal-use software development costs | -1.7 | -1.5 | -0.7 | -1.2 | -0.5 | -0.5 | -0.4 | -0.6 |
| Cash paid for acquisitions | | | | | -1.1 | | | |
| Net cash used in investing activities | 27.7 | -96.4 | -84.8 | -1.8 | -2.1 | -0.8 | -0.9 | -0.8 |
| |
| Cash flows from financing activities | | | | | | | | |
| Proceeds from exercise of stock options | 0.3 | 0.5 | 0.1 | 0.2 | 1.4 | 1.5 | 8.3 | 2.5 |
| Taxes paid related to net share settlement of equity awards | -1.4 | -1.8 | -1.3 | -1.5 | -2.1 | -1.7 | -4.3 | -2.8 |
| Proceeds from issuance of common stock under ESPP | 0.6 | | | | 0.8 | | | |
| Principal payments on finance lease obligations | | 0.0 | | | 0.0 | 0.0 | | |
| Net cash used in financing activities | -0.5 | -1.4 | -0.5 | -1.4 | 0.1 | -0.3 | 4.5 | -0.4 |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | 1.0 | 1.8 | 12.2 | -25.2 | -10.5 | -1.2 | -6.8 | -4.9 |
| Net (decrease) increase in cash, cash equivalents and restricted cash | 1.2 | -20.8 | -96.0 | | -39.1 | 75.1 | | |
| |
| Cash, cash equivalents and restricted cash | | | | | | | | |
| |
| Supplemental cash flow data | | | | | | | | |
| Interest paid | 3.8 | 0.8 | 3.8 | 0.8 | 3.8 | 0.9 | 3.9 | 0.8 |
| Income taxes paid, net of refunds | 0.3 | 0.0 | 0.5 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| |
| Non-cash investing and financing activities | | | | | | | | |
| Reduction of right of use asset due to modification or exit | 2.9 | 1.0 | | | 1.2 | 0.9 | | |