| In millions, except per share items | Jun-30-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 | Mar-31-19 | Dec-31-18 | Sep-30-18 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Cash flows from operating activities | | | | | | | | |
| Net income (loss) | 60.0 | -60.0 | 8.0 | 8.1 | -5.3 | 5.3 | 13.3 | 9.3 |
| |
| Adjustments to reconcile net income (loss) to net cash from operating activities: | | | | | | | | |
| Provision for credit losses | -107.9 | 107.9 | | | -43.3 | 43.3 | | |
| Depreciation and amortization | -1.6 | 1.6 | 1.3 | 1.6 | -1.7 | 1.7 | 1.6 | 2.0 |
| Amortization of debt issuance costs | -16.5 | 16.5 | 16.6 | 17.2 | -18.6 | 18.6 | 17.6 | 17.0 |
| Stock-based compensation | -1.4 | 1.4 | 2.3 | 2.4 | -2.7 | 2.7 | 3.0 | 2.8 |
| Amortization of net deferred origination costs | -16.5 | 16.5 | 16.6 | 17.2 | -18.6 | 18.6 | 17.6 | 17.0 |
| Changes in servicing rights, at fair value | | | | | -0.1 | 0.1 | 0.1 | 0.0 |
| Unfunded loan commitment reserve | | | 1.0 | -0.2 | 0.0 | 0.0 | 0.6 | 0.2 |
| Loss on disposal of fixed assets | | | 1.7 | | -0.7 | 0.7 | 0.1 | 0.0 |
| Amortization of intangibles | -0.1 | 0.1 | 0.1 | 0.2 | | | | |
| Goodwill impairment | 11.0 | | | | | | | |
| Changes in operating assets and liabilities: | | | | | | | | |
| Other assets | 5.2 | -5.2 | -4.9 | -0.5 | 3.8 | -3.8 | 2.1 | -5.1 |
| Accounts payable | -0.5 | 0.5 | 3.1 | -2.1 | -0.9 | 0.9 | -1.4 | 1.6 |
| Interest payable | -0.8 | 0.8 | -0.3 | -0.1 | -0.4 | 0.4 | 0.3 | -0.4 |
| Accrued expenses and other liabilities | 6.2 | -6.2 | 3.0 | 0.4 | 1.0 | -1.0 | 6.2 | -2.6 |
| Net cash provided by operating activities | -57.4 | 57.4 | 75.7 | 70.1 | -69.0 | 69.0 | 83.2 | 63.9 |
| |
| Cash flows from investing activities | | | | | | | | |
| Purchases of property, equipment and software | 2.4 | -2.4 | -0.1 | -1.7 | 0.5 | -0.5 | -0.4 | 0.0 |
| Capitalized internal-use software | 2.8 | -2.8 | | | 1.4 | -1.4 | | |
| Originations of loans and finance receivables, excluding rollovers into new originations | 510.6 | -510.6 | -2,079.4 | | 537.1 | -537.1 | -2,115.8 | |
| Payments of net deferred origination costs | 17.0 | -17.0 | -17.6 | -18.3 | 18.5 | -18.5 | -19.5 | -17.2 |
| Principal repayments of loans and finance receivables | -426.0 | 426.0 | | | -469.9 | 469.9 | | |
| Acquisition of shares in business combination | | | 0.0 | 0.0 | | | | |
| Net cash provided by (used in) investing activities | 106.8 | -106.8 | -95.4 | -82.8 | 87.7 | -87.7 | -106.5 | -117.2 |
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| Cash flows from financing activities | | | | | | | | |
| Tax withholding related to vesting of restricted stock units | 0.2 | -0.2 | -0.6 | -0.2 | 0.3 | -0.3 | -1.1 | -0.4 |
| Repurchases of common stock | 32.9 | -32.9 | -33.0 | -11.0 | | | | |
| Proceeds from exercise of stock options | 0.0 | 0.0 | 0.0 | 1.0 | -1.3 | 1.3 | 0.0 | 0.8 |
| Issuance of common stock under employee stock purchase plan | | | | | -1.3 | 1.3 | | |
| Proceeds from the issuance of debt | -261.7 | 261.7 | 299.8 | 105.8 | -210.8 | 210.8 | 61.6 | 290.3 |
| Payments of debt issuance costs | 0.2 | -0.2 | -2.1 | -0.5 | 3.1 | -3.1 | -0.6 | -1.7 |
| Repayments of debt principal | 126.3 | -126.3 | -256.9 | -75.3 | 182.8 | -182.8 | -55.2 | -234.8 |
| Net cash (used in) provided by financing activities | -102.2 | 102.2 | 7.3 | 19.8 | -25.9 | 25.9 | 3.1 | 54.3 |
| Effect of exchange rate changes on cash and cash equivalents | -0.5 | 0.5 | -0.5 | | 0.1 | -0.1 | -3.1 | |
| Net increase (decrease) in cash, cash equivalents and restricted cash | -53.4 | 53.4 | -0.8 | | -7.1 | 7.1 | -17.2 | |
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| Reconciliation to amounts on consolidated balance sheets | | | | | | | | |
| Cash and cash equivalents | | | | | | | | |
| Restricted cash | | | | | | | | |
| |
| Supplemental disclosure of other cash flow information | | | | | | | | |
| Cash paid for interest | -9.6 | 9.6 | 9.8 | 10.2 | -9.9 | 9.9 | 20.8 | |
| Cash paid for income taxes | 0.0 | 0.0 | | | | | | |
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| Supplemental disclosures of non-cash investing and financing activities | | | | | | | | |
| Stock-based compensation included in capitalized internal-use software | 0.0 | 0.0 | 0.1 | 0.1 | -0.1 | 0.1 | 0.1 | |
| Unpaid principal balance of term loans rolled into new originations | -79.7 | 79.7 | 95.3 | 101.6 | -98.5 | 98.5 | 200.7 | |