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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2024
Employee Benefit Plans |
Schedule of funded status of the defined benefit plans and amounts recognized in the consolidated balance sheets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended |  | Year Ended
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Change in projected benefit obligation | ​ | ​ | ​ | ​ | ​ | ​
Balance at beginning of period | ​ | $ | 73.5 | ​ | $ | 68.0
Service cost | ​ | ​ | — | ​ | ​ | —
Administration costs paid | ​ | ​ | — | ​ | ​ | —
Interest cost | ​ | ​ | 1.9 | ​ | ​ | 0.7
Actuarial loss (gain) | ​ | ​ | (6.3) | ​ | ​ | 5.5
Annuity benefits paid | ​ | ​ | (4.1) | ​ | ​ | (0.7)
Lump sum benefits paid | ​ | ​ | (15.0) | ​ | ​ | —
Annuity sale to insurer | ​ | ​ | (50.0) | ​ | ​ | —
Balance at end of year | ​ | $ | — | ​ | $ | 73.5
Change in fair value of plan assets | ​ | ​ | ​ | ​ | ​ | ​
Balance at beginning of period | ​ | $ | 74.4 | ​ | $ | 67.9
Actual gain (loss) on plan assets | ​ | ​ | 2.5 | ​ | ​ | 7.2
Employer contributions | ​ | ​ | — | ​ | ​ | —
Administration costs paid | ​ | ​ | — | ​ | ​ | —
Annuity benefits paid | ​ | ​ | (4.1) | ​ | ​ | (0.7)
Lump sum settlement benefits paid | ​ | ​ | (15.0) | ​ | ​ | —
Annuity settlement sale to insurer | ​ | ​ | (50.0) | ​ | ​ | —
Transfer surplus assets | ​ | ​ | (7.8) | ​ | ​ | —
Fair value of plan assets at end of the year | ​ | $ | — | ​ | $ | 74.4
Funded (underfunded) status at end of year | ​ | $ | — | ​ | $ | 0.9
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Current liabilities | ​ | $ | — | ​ | $ | —
Noncurrent assets (liabilities) | ​ | ​ | — | ​ | ​ | 0.9
Net amount recognized | ​ | $ | — | ​ | $ | 0.9
Schedule of amounts recognized in accumulated other comprehensive income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Net actuarial gain recognized | ​ | $ | (6.9) | ​ | $ | (0.9)
Settlement gain | ​ | ​ | 7.8 | ​ | ​ | —
Change in period | ​ | $ | 0.9 | ​ | $ | (0.9)
Schedule of the components of net periodic benefit cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended |  | Year Ended
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Service cost - benefits earned | ​ | $ | — | ​ | $ | —
Interest costs on benefit obligation | ​ | ​ | 1.9 | ​ | ​ | 0.7
Expected return on plan assets | ​ | ​ | (2.0) | ​ | ​ | (0.7)
Settlement gain | ​ | $ | (7.8) | ​ | $ | —
Net periodic benefit income | ​ | $ | (7.9) | ​ | $ | —
Schedule of weighted average assumptions used to determine benefit obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Discount rate | ​ | N/A | % | ​ | 4.64 | %
Schedule of weighted-average assumptions used to determine net periodic benefit costs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Discount rate | ​ | 4.64 | % | ​ | 5.36 | %
Long-term rate of return on plan assets | ​ | 4.64 | % | ​ | 5.60 | %
Schedule of the weighted average asset allocations by asset category | ​
​ | ​ | ​ | ​
​ | ​ | ​ | ​
Asset Category | ​ | ​ | ​
Cash | ​ | 39 | %
Equity | ​ | - | ​
Fixed Income | ​ | 61 | ​
Total | ​ | 100 | %
Schedule of the investments in the pension plan measured at fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2023
​ | ​ | Level 1 | ​ | Level 2 | ​ | Level 3 | ​ | Total
​ | ​ | (in millions)
Cash | ​ | $ | 28.9 | ​ | $ | — | ​ | $ | — | ​ | $ | 28.9
Fixed income securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate notes | ​ | ​ | — | ​ | ​ | 31.7 | ​ | ​ | — | ​ | ​ | 31.7
Treasury notes | ​ | ​ | 12.7 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 12.7
Other investments(a) | ​ | ​ | 1.7 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1.7
Total investments | ​ | $ | 43.3 | ​ | $ | 31.7 | ​ | $ | — | ​ | $ | 75.0
| (a) | Includes Aetna Co. Annuity Contract and accrued interest and dividends
Information related to the company's pension funds cash flow | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended |  | Year Ended
​ |  | December 31, 2024 |  | December 31, 2023
​ | ​ | (in millions)
Employer contributions | ​ | $ | — | ​ | $ | —
Benefit payments | ​ | ​ | 4.1 | ​ | ​ | 0.7
Lump sum settlement benefits paid | ​ | ​ | 15.0 | ​ | ​ | —
Annuity settlement sale to insurer | ​ | ​ | 50.0 | ​ | ​ | —
​

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- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (j) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation, including assumed discount rates and rate increase in compensation increase. + References No definition available. + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References No definition available. + Details
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