| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Schedule of Segment Reporting Information By Segment [Table] | | | | | | | | |
| Segment Reporting Information [Line Items] | | | | | | | | |
| Revenues | 370.2 | 375.9 | 329.4 | 274.1 | 268.0 | 258.1 | 248.2 | 242.5 |
| Revenues growth | -1.5% | 14.1% | 20.2% | 2.3% | 3.8% | 4.0% | 2.3% | 7.2% |
| Field costs and expenses: | | | | | | | | |
| Cost of service and merchandise | | | | | | | | |
| Cemetery property amortization | 5.9 | 6.7 | 5.0 | 4.0 | 3.6 | 3.4 | 3.9 | |
| Regional and unallocated funeral and cemetery costs | 23.0 | 25.8 | 18.1 | 13.8 | 12.7 | 13.3 | 10.8 | 12.0 |
| Other expenses | 5.0 | 5.0 | 4.8 | 2.1 | 1.5 | | | |
| Total field costs and expenses | 250.9 | 246.4 | 223.5 | 194.5 | 192.0 | 181.3 | 168.6 | 165.0 |
| Gross profit | 119.2 | 129.5 | 105.9 | 79.6 | 75.9 | 76.8 | 79.7 | 77.5 |
| Gross margin | 32.2% | 34.5% | 32.2% | 29.0% | 28.3% | 29.8% | 32.1% | 32.0% |
| |
| Corporate costs and expenses: | | | | | | | | |
| General, administrative and other | 37.5 | 35.2 | 27.3 | 25.9 | 30.8 | 26.3 | 27.9 | 27.1 |
| Net (gain) loss on divestitures, disposals and impairments charges | 0.9 | 1.0 | | | 0.8 | | | |
| Operating income | 79.7 | 93.7 | 57.2 | 47.4 | 42.1 | 48.9 | 50.2 | 48.6 |
| Operating margin | 21.5% | 24.9% | 17.4% | 17.3% | 15.7% | 19.0% | 20.2% | 20.1% |
| Interest expense | -25.9 | -25.4 | -32.5 | -25.5 | -21.1 | -12.9 | -11.7 | -10.6 |
| Other, net | | | | | | 1.3 | 1.1 | |
| Expense for income taxes | -16.2 | -12.3 | -8.0 | -7.4 | -5.8 | -13.1 | -12.7 | 13.7 |
| Tax adjustment related to discrete items | 0.4 | 1.2 | -0.6 | -0.5 | -0.9 | | | |
| Total expense for income taxes | -15.8 | -11.1 | -8.6 | | | | | |
| Net income | 41.4 | 33.2 | 16.1 | 14.5 | 11.6 | 37.2 | 19.6 | 20.9 |
| |
| Earnings Per Share, Basic and Diluted [Abstract] | | | | | | | | |
| Continuing operations (in dollars per Share) | 14.9 | 17.4 | 17.9 | 17.9 | 18.0 | | | |
| Continuing operations (in dollars per Share) | 15.7 | 18.3 | 18.1 | 18.0 | 18.4 | | | |
| |
| Dividends declared per common share (in dollars per Share) | $0.45 | $0.41 | $0.34 | $0.30 | $0.30 | $0.23 | $0.15 | $0.10 |
| |
| Weighted average number of common and common equivalent shares outstanding: | | | | | | | | |
| Basic (in Shares) | 14.9 | 17.4 | 17.9 | 17.9 | 18.0 | 16.4 | 16.5 | 17.8 |
| Diluted (in Shares) | 15.7 | 18.3 | 18.1 | 18.0 | 18.4 | 17.7 | 17.5 | 18.3 |