| In millions, except per share items | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Operating activities | | | | | | | | |
| Net income (loss) | 13.8 | | | | 14.8 | | | |
| |
| Adjustments to reconcile net income to net cash from (used in) operating activities: | | | | | | | | |
| Depreciation and amortization | 5.2 | 5.2 | 5.1 | 5.0 | 5.2 | 5.0 | 5.0 | 4.9 |
| Loss (gain) on disposal of fixed asset | 0.2 | -0.1 | -0.1 | -0.1 | -0.1 | | | |
| Amortization of deferred financing costs and debt discount | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 | 0.4 | 0.5 | 0.3 |
| Loss on extinguishment of debt | | | | | 4.9 | | | |
| Stock-based compensation | 3.2 | 1.9 | -0.2 | 0.0 | 4.1 | 2.0 | 0.1 | 0.2 |
| Adjustments on derivatives not classified as hedges | -0.3 | | | | -0.8 | | | |
| Provision for losses on accounts receivable | 0.0 | 0.1 | -0.5 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 |
| Deferred income taxes | 0.1 | 1.0 | 0.7 | 0.4 | 0.2 | 0.3 | -1.0 | 1.2 |
| Non-cash lease expense | 1.1 | 1.2 | -0.6 | 0.7 | 0.6 | 1.0 | 1.1 | 1.0 |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable | -84.8 | 27.9 | 53.6 | -32.2 | -47.1 | 37.9 | 39.7 | -46.7 |
| Inventories | 12.3 | -39.8 | -3.9 | -6.2 | 6.1 | -20.2 | 14.3 | 5.8 |
| Prepaid assets, refundable income taxes and other assets | 3.7 | -1.1 | 1.8 | -3.1 | -0.2 | -0.3 | -0.2 | -1.8 |
| Accounts payable | 1.0 | -9.3 | 9.9 | -2.4 | -0.4 | 3.3 | -3.2 | 0.5 |
| Accrued expenses and other current liabilities | 8.7 | -8.9 | 3.5 | -0.6 | 1.2 | -4.1 | 7.5 | 2.8 |
| Benefit obligations and other long-term liabilities | -0.5 | -0.1 | 0.7 | -1.3 | -0.6 | -0.7 | -1.4 | 1.0 |
| Net cash provided by (used in) operating activities | -32.2 | -26.0 | 80.0 | -32.6 | -11.0 | 24.1 | 80.4 | -21.1 |
| |
| Investing activities | | | | | | | | |
| Capital expenditures | -3.4 | -2.2 | -3.9 | -2.7 | -2.4 | -2.2 | -5.0 | -4.4 |
| Net cash used in investing activities | -3.4 | -2.2 | -3.9 | -2.7 | -2.4 | -2.2 | -5.0 | -4.4 |
| |
| Financing activities | | | | | | | | |
| Repurchase of common stock | -3.0 | -3.0 | | | | | | |
| Payments of financing costs | | | | -0.1 | -1.3 | | -0.1 | |
| Dividends paid | -6.8 | -6.7 | -6.6 | -6.6 | -6.5 | -6.8 | -6.5 | -6.5 |
| Net revolver borrowings | 46.0 | 12.0 | | 37.0 | | | | 12.0 |
| |
| Borrowings on long-term debt | | | | | | | | |
| Repayment of long-term debt | -2.8 | -2.8 | -2.8 | -2.8 | -223.6 | -20.7 | -30.0 | -0.7 |
| Net cash provided by (used in) financing activities | 33.4 | -0.6 | -46.5 | 27.5 | -6.9 | -27.5 | -48.7 | 4.8 |
| Change in cash and cash equivalents | -2.2 | -28.8 | 29.6 | -7.8 | -20.3 | -5.5 | 26.7 | -20.6 |
| |
| Non-cash operating and financing activities | | | | | | | | |
| Truck chassis inventory acquired through floorplan obligations | 0.6 | 0.7 | 6.4 | 2.0 | 9.8 | 16.2 | 10.5 | 19.2 |