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DEBT (Tables) | 12 Months Ended
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Dec. 31, 2023
DEBT |
Schedule of debt | The Company’s debt consists of the following as of December 31, 2023 and 2022:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
(In millions) |  | 2023 |  | 2022
Private Placement Term Loans: | ​ | ​ | ​ | ​ | ​ | ​
3.66 %, payable through 2023 | ​ | $ | — | ​ | $ | 4.5
3.37 %, payable through 2027 | ​ | ​ | 46.2 | ​ | ​ | 57.7
3.14 %, payable through 2031 | ​ | ​ | 114.4 | ​ | ​ | 132.8
Title XI Debt: | ​ | ​ | ​ | ​ | ​ | ​
5.34 %, payable through 2028 | ​ |  | — | ​ |  | 13.2
5.27 %, payable through 2029 | ​ |  | — | ​ |  | 15.4
1.22 %, payable through 2043 | ​ | ​ | 158.2 | ​ | ​ | 166.2
1.35 %, payable through 2044 | ​ | ​ | 121.8 | ​ | ​ | 127.7
Total Debt | ​ |  | 440.6 | ​ |  | 517.5
Less: Current portion | ​ |  | (39.7) | ​ |  | (76.9)
Total Long-term Debt | ​ | ​ | 400.9 | ​ | ​ | 440.6
Less: Deferred loan fees | ​ | ​ | (11.6) | ​ | ​ | (12.9)
Total Long-term Debt, net of deferred loan fees | ​ | $ | 389.3 | ​ | $ | 427.7
Schedule of maturities of debt | ​
​ | ​ | ​ | ​
​ | ​ | As of
Year (in millions) |  | December 31, 2023
2024 | ​ | $ | 39.7
2025 | ​ |  | 39.7
2026 | ​ |  | 39.7
2027 | ​ |  | 39.7
2028 | ​ |  | 28.2
Thereafter | ​ |  | 253.6
Total Debt | ​ | $ | 440.6
Schedule of deferred loan fees | ​
​ | ​ | ​ | ​
Deferred Loan Fees (in millions) |  | Amount
Balance at December 31, 2022 | ​ | $ | 12.9
Amortization expense for the year ended December 31, 2023 | ​ |  | (1.3)
Balance at December 31, 2023 | ​ | $ | 11.6
Schedule of estimated amortization expense relating to deferred laon fees | ​
​ | ​ | ​ | ​
Year (in millions) |  | Amount
2024 | ​ | $ | 1.2
2025 | ​ |  | 1.1
2026 | ​ |  | 1.0
2027 | ​ |  | 0.9
2028 | ​ |  | 0.9
Thereafter | ​ |  | 6.5
Total amortization expense of deferred loan fees | ​ | $ | 11.6

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