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DEBT - REVOLVING CREDIT FACILITY (Details) | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2020 USD ($) | Apr. 30, 2020 USD ($)
Senior Unsecured Series A Notes |  |  |  |  |  |
Debt |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.37% |  |  |  |
Debt issued |  | $ 75,000,000 |  |  |  |
Debt instrument term |  | 11 years |  |  |  |
Revolving Credit Facility |  |  |  |  |  |
Debt |  |  |  |  |  |
Maximum borrowing capacity under revolving credit facility | $ 650,000,000 |  |  |  |  |
Ratio of debt instrument covenant threshold leverage | 3.5 |  |  |  |  |
Ratio of debt instrument covenant threshold leverage connection with material acquisition | 4 |  |  |  |  |
Funds available under the revolving credit facility |  |  |  | $ 643,900,000 |  |
Standby commercial letters of credit |  |  |  |  |  |
Debt |  |  |  |  |  |
Used portion of revolving credit facility |  |  |  | 6,100,000 |  |
Amendment to 2021 Private Placement Term Loan |  |  |  |  |  |
Debt |  |  |  |  |  |
Ratio of debt instrument covenant threshold leverage | 3.5 |  |  |  |  |
Ratio of debt instrument covenant threshold leverage connection with material acquisition | 4 |  |  |  |  |
Fees paid | $ 800,000 |  |  |  |  |
Debt Instrument, Threshold Leverage Ratio To Trigger Interest Enhancement Payments | 3.25 |  |  |  |  |
The Senior Unsecured Notes (The "Series D Notes") |  |  |  |  |  |
Debt |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 3.14% |  |  |
Debt issued |  |  | $ 200,000,000 |  |  |
Debt instrument term |  |  | 15 years |  |  |
LIBOR | Revolving Credit Facility | Minimum |  |  |  |  |  |
Debt |  |  |  |  |  |
Variable rate margin | 1.00% |  |  |  |  |
LIBOR | Revolving Credit Facility | Maximum |  |  |  |  |  |
Debt |  |  |  |  |  |
Variable rate margin | 1.75% |  |  |  |  |
Base rate | Revolving Credit Facility | Minimum |  |  |  |  |  |
Debt |  |  |  |  |  |
Variable rate margin | 0.00% |  |  |  |  |
Base rate | Revolving Credit Facility | Maximum |  |  |  |  |  |
Debt |  |  |  |  |  |
Variable rate margin | 0.75% |  |  |  |  |
MatNav | Title XI Notes |  |  |  |  |  |
Debt |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 1.35% | 1.22%
Minimum working capital covenant |  |  |  | $ 1 |  |
Debt instrument covenant ratio, maintenance of net worth |  |  |  | 90.00% |  |
Debt issued |  |  |  |  | $ 139,600,000 | $ 185,900,000
MatNav | Minimum | Title XI Notes |  |  |  |  |  |
Debt |  |  |  |  |  |
Debt instrument covenant, long-term debt to net worth |  |  |  | 2 |  |

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