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BORROWINGS - Additional information (Details) $ in Thousands, € in Millions, £ in Millions, kr in Millions |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 05, 2024 USD ($) | Feb. 07, 2024 USD ($) | Nov. 23, 2021 USD ($) | Feb. 28, 2019 USD ($) | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Mar. 31, 2025 GBP (£) | Mar. 31, 2025 EUR (€) | Dec. 31, 2024 GBP (£) | Dec. 31, 2024 EUR (€) | Dec. 31, 2024 SEK (kr) | Feb. 12, 2024 USD ($) | Apr. 30, 2022 USD ($) | Apr. 01, 2022 USD ($) | Feb. 25, 2022 USD ($) | Nov. 04, 2021 USD ($) | Feb. 25, 2021 USD ($) | Nov. 04, 2020 USD ($) | Sep. 29, 2020 USD ($) | Sep. 24, 2020 USD ($) | Aug. 03, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings under credit facility |  |  |  |  | $ 497,268 | $ 438,590 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment aggregate amount | $ 825,000 |  |  | $ 800,000 | $ 800,000 | 800,000 |  |  |  |  |  |  |  | $ 1,065,000 | $ 965,000 | $ 875,000 |  |  |  |  |
Line of credit facility commitment aggregate value |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  | $ 1,500,000 | $ 1,500,000 |  |  |  |  |  |
Line of credit, repayment period after maturity |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reallocation of loans from revolving commitments to term loan commitments | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable floor rate (as percent) |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of unused portion of credit facility, greater than two-third of commitments (as percent) |  |  |  | 0.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs, financing fees |  |  |  | $ 6,400 |  |  |  |  |  |  |  |  | $ 10,700 |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  | 5.898% |  | 5.898% | 5.898% |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 497,300 | 438,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 2.25% |  |  | 1.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Applicable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.875% |  |  | 1.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Screen Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 2.0875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Federal Funds Purchased |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Overnight Bank Funding Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | One-Month Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, credit spread adjustment |  |  |  | 0.0010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Interest Period Of One Month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, credit spread adjustment | 0.0010 |  |  | 0.0010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Interest Period Of Three Month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, credit spread adjustment | 0.0015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | Interest Period Of Six Month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, credit spread adjustment | 0.0025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 21, 2019 | Line of Credit | External Credit Rating, Investment Grade |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Denominated In U.S Dollars | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings under credit facility |  |  |  |  | $ 303,000 | $ 237,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  | 6.347% | 6.484% | 6.347% | 6.347% | 6.484% | 6.484% | 6.484% |  |  |  |  |  |  |  |  |  |
Debt Denominated In U.S Dollars | Line of Credit | One-Month Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  | 4.303% | 4.509% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Denominated In Swedish Kronas | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings under credit facility |  |  |  |  |  | $ 900 |  |  |  |  | kr 9.8 |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  |  | 4.625% |  |  | 4.625% | 4.625% | 4.625% |  |  |  |  |  |  |  |  |  |
Debt Denominated In Swedish Kronas | Line of Credit | Stockholm Interbank Offered Rate (STIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Denominated In British Pounds | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings under credit facility |  |  |  |  | $ 64,000 | $ 69,600 | £ 49.6 |  | £ 55.6 |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  | 6.363% | 6.608% | 6.363% | 6.363% | 6.608% | 6.608% | 6.608% |  |  |  |  |  |  |  |  |  |
Debt Denominated In British Pounds | Line of Credit | Sterling Overnight Index Average (SONIA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  | 4.455% | 4.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Denominated In Euro | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings under credit facility |  |  |  |  | $ 130,300 | $ 131,100 |  | € 120.6 |  | € 126.6 |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  | 4.625% | 4.938% | 4.625% | 4.625% | 4.938% | 4.938% | 4.938% |  |  |  |  |  |  |  |  |  |
Debt Denominated In Euro | Line of Credit | Euro Interbank Offered Rate (EURIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  | 2.75% | 3.063% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
September 24, 2020 - August 2025 Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000 | $ 25,000 | $ 50,000
Fixed interest rate |  |  |  |  | 4.66% |  | 4.66% | 4.66% |  |  |  |  |  |  |  |  |  |  |  |  | 4.66%
Debt instrument, ownership percentage for immediate conversion |  |  |  |  | 66.67% |  | 66.67% | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |
September 24, 2020 - August 2025 Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 49,800 | $ 49,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 5, 2020 - Series B Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 62,500 |  |  |
Fixed interest rate |  |  |  |  | 4.25% |  | 4.25% | 4.25% |  |  |  |  |  |  |  |  |  | 4.25% |  |  |
November 5, 2020 - Series B Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 61,700 | 61,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 5, 2020 - Series C Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 112,500 |  |  |
Fixed interest rate |  |  |  |  | 4.75% |  | 4.75% | 4.75% |  |  |  |  |  |  |  |  |  | 4.75% |  |  |
November 5, 2020 - Series C Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 108,900 | 108,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B And Series C Senior Unsecured Notes Due November | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, ownership percentage for immediate conversion |  |  |  |  | 66.67% |  | 66.67% | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate extended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0075 |  |  |
Investment grade conditions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0150 |  |  |
February 25, 2021 Series D Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 80,000 |  |  |  |
Fixed interest rate |  |  |  |  | 3.41% |  | 3.41% | 3.41% |  |  |  |  |  |  |  |  | 3.41% |  |  |  |
February 25, 2021 Series D Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 78,300 | 77,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 25, 2021 Series E Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 70,000 |  |  |  |
Fixed interest rate |  |  |  |  | 4.06% |  | 4.06% | 4.06% |  |  |  |  |  |  |  |  | 4.06% |  |  |  |
February 25, 2021 Series E Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 66,400 | 65,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series D And Series E Senior Unsecured Notes Due February | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, ownership percentage for immediate conversion |  |  |  |  | 66.67% |  | 66.67% | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate extended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0075 |  |  |  |
Investment grade conditions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0150 |  |  |  |
November 23, 2021 - November 2026 Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 350,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate |  |  | 3.30% |  | 3.30% |  | 3.30% | 3.30% |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage on purchase price (as percent) |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 23, 2021 - November 2026 Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 330,400 | 329,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 12, 2024 - February 2029 Notes | Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |  |
Company receives |  |  |  |  |  |  |  |  |  |  |  | 7.00% |  |  |  |  |  |  |  |  |
Derivative liabilities |  |  |  |  | $ 1,300 | (4,400) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 12, 2024 - February 2029 Notes | Secured Overnight Financing Rate (SOFR) | Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, variable interest rate |  |  |  |  |  |  |  |  |  |  |  | 3.1475% |  |  |  |  |  |  |  |  |
February 12, 2024 - February 2029 Notes | Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate |  | 7.00% |  |  | 7.00% |  | 7.00% | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage on purchase price (as percent) |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt |  | $ 292,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
February 12, 2024 - February 2029 Notes | Notes | Fair Value, Inputs, Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  |  |  | $ 301,300 | $ 295,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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