| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 |
| | 8-K | 10-K | 10-K | 10-K | 10-K/A | 10-K |
| Cash flows from operating activities: | | | | | | |
| Net income | | 31.6 | -0.4 | -36.8 | 10.8 | 8.3 |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | | |
| Amortization of debt issuance costs | | 2.1 | 2.1 | 0.7 | 0.4 | 0.3 |
| Stock-based compensation | | 6.4 | 5.5 | 2.2 | 0.5 | 0.8 |
| Gain on disposal of property and equipment | | -0.1 | 0.0 | 0.1 | 0.1 | 0.3 |
| Remeasurement of contingent consideration | | 4.3 | -0.6 | 6.7 | 0.9 | |
| Payments on consideration payable | | -2.6 | -1.8 | | | |
| Accretion of interest on route and customer acquisition costs payable, contingent consideration, and contingent stock consideration | | 2.6 | 2.0 | 1.6 | 0.9 | 0.7 |
| Deferred income taxes | | 6.1 | -16.8 | 4.1 | 4.3 | 1.5 |
| Changes in operating assets and liabilities: | | | | | | |
| Prepaid expenses and other current assets | | -5.0 | -2.9 | -3.5 | -0.5 | -3.8 |
| Income taxes receivable | | 3.3 | 0.6 | -1.8 | -1.4 | -0.7 |
| Route and customer acquisition costs | | -3.1 | -0.6 | -5.4 | -3.7 | -2.8 |
| Route and customer acquisition costs payable | | 0.1 | -0.8 | -1.3 | -1.0 | -1.4 |
| Accounts payable and accrued expenses | | 6.8 | -13.4 | -0.4 | -2.6 | 3.2 |
| Accrued compensation and related expenses | | 3.0 | 3.5 | 0.5 | -0.9 | |
| Other assets | | 0.0 | -0.1 | -0.2 | 0.0 | -0.4 |
| Net cash provided by operating activities | 108.0 | 110.8 | -3.7 | 45.6 | 44.3 | 33.1 |
| |
| Cash flows from investing activities: | | | | | | |
| Purchases of property and equipment | | -29.8 | -25.8 | -20.8 | -23.2 | -23.6 |
| Proceeds from the sale of property and equipment | | 1.4 | 0.4 | 0.1 | 1.2 | 0.3 |
| Business and asset acquisitions, net of cash acquired | | -6.2 | -35.8 | -100.9 | -51.4 | -45.1 |
| Net cash used in investing activities | -189.3 | -34.5 | -61.4 | -151.5 | -73.5 | -70.9 |
| |
| Cash flows from financing activities: | | | | | | |
| Proceeds from debt | | 42.0 | 49.0 | 179.3 | | |
| Payments on debt | | -42.0 | -107.5 | -187.8 | | |
| Payments for repurchase of common stock | | -9.0 | | | -3.3 | -0.1 |
| Proceeds from exercise of stock-based awards | | 1.7 | 0.8 | 3.6 | 0.4 | |
| Payments on consideration payable | | | -0.3 | | | -0.4 |
| Tax withholding on stock-based payments | | -0.1 | 0.0 | -5.1 | | |
| Net cash (used in) provided by financing activities | 106.6 | -11.9 | 74.2 | 139.1 | 46.1 | 59.1 |
| |
| Cash and cash equivalents: | | | | | | |
| Supplemental disclosures of cash flow information: | | | | | | |
| Cash payments for: | | | | | | |
| Interest | | 9.6 | 12.9 | 12.0 | 8.7 | 6.2 |
| Income taxes | | 8.6 | | 1.8 | 1.6 | |
| Supplemental schedules of noncash investing and financing activities: | | | | | | |
| Purchases of property and equipment in accounts payable and accrued liabilities | | 2.7 | 15.0 | 11.5 | 2.2 | 1.1 |
| Acquisition of businesses and assets: | | | | | | |
| Total identifiable net assets acquired | | 6.9 | 39.7 | 119.2 | 63.7 | |
| Less cash acquired | | -0.6 | -0.7 | -8.9 | -3.6 | -4.9 |
| Cash purchase price | | -6.2 | -35.8 | -100.9 | -51.4 | -45.1 |