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v3.23.3

Long-Term Debt - Schedule of Components of Long-Term Debt (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |
Borrowings | $ 1,838,774,000 | $ 1,746,145,000
Unamortized Deferred Issuance Costs / Discount | (9,214,000) | (12,720,000)
Net Carrying Value | 1,829,560,000 | 1,733,425,000
Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | 1,322,182,000 | 1,079,353,000
Unamortized Deferred Issuance Costs / Discount | (1,449,000) | (2,153,000)
Net Carrying Value | 1,320,733,000 | 1,077,200,000
Trust preferred securities and subordinated notes |  |
Debt Instrument [Line Items] |  |
Borrowings | 139,500,000 | 139,500,000
Unamortized Deferred Issuance Costs / Discount | (698,000) | (733,000)
Net Carrying Value | $ 138,802,000 | $ 138,767,000
Trust preferred securities and subordinated notes | SOFR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.51% |
Trust preferred securities and subordinated notes | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) |  | 2.25%
Facility A | Recourse Subordinate Securities Financing | Affiliated Entity |  |
Debt Instrument [Line Items] |  |
Borrowings |  | $ 130,408,000
Unamortized Deferred Issuance Costs / Discount |  | 0
Net Carrying Value |  | $ 130,408,000
Weighted Average Interest Rate (as a percent) |  | 5.71%
Facility B | Recourse Subordinate Securities Financing | Affiliated Entity |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 101,247,000 | $ 101,706,000
Unamortized Deferred Issuance Costs / Discount | 0 | (50,000)
Net Carrying Value | $ 101,247,000 | $ 101,656,000
Weighted Average Interest Rate (as a percent) | 5.71% | 4.21%
Facility C | Recourse Subordinate Securities Financing | Affiliated Entity |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 60,657,000 | $ 68,995,000
Unamortized Deferred Issuance Costs / Discount | 0 | (125,000)
Net Carrying Value | $ 60,657,000 | $ 68,870,000
Weighted Average Interest Rate (as a percent) | 4.75% | 4.75%
Facility D | Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 486,099,000 | $ 404,622,000
Unamortized Deferred Issuance Costs / Discount | (596,000) | (667,000)
Net Carrying Value | 485,503,000 | 403,955,000
Limit | $ 750,000,000 | $ 750,000,000
Facility D | Line of Credit | SOFR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.89% | 2.87%
Facility E | Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 225,865,000 | $ 308,933,000
Unamortized Deferred Issuance Costs / Discount | (844,000) | (838,000)
Net Carrying Value | 225,021,000 | 308,095,000
Limit | $ 335,000,000 | $ 335,000,000
Facility E | Line of Credit | SOFR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 3.25% | 3.25%
Facility F | Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 21,293,000 | $ 64,689,000
Unamortized Deferred Issuance Costs / Discount | (9,000) | (473,000)
Net Carrying Value | 21,284,000 | 64,216,000
Limit | $ 500,000,000 | $ 500,000,000
Facility F | Line of Credit | SOFR | Minimum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.35% | 2.25%
Facility F | Line of Credit | SOFR | Maximum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.60% | 2.50%
Facility H | Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 234,014,000 |
Unamortized Deferred Issuance Costs / Discount | 0 |
Net Carrying Value | 234,014,000 |
Limit | $ 450,000,000 |
Facility H | Line of Credit | SOFR | Minimum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.40% |
Facility H | Line of Credit | SOFR | Maximum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.60% |
Facility I | Line of Credit |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 193,007,000 |
Unamortized Deferred Issuance Costs / Discount | 0 |
Net Carrying Value | 193,007,000 |
Limit | $ 450,000,000 |
Facility I | Line of Credit | SOFR | Minimum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.25% |
Facility I | Line of Credit | SOFR | Maximum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 2.77% |
5.625% convertible senior notes | Convertible notes |  |
Debt Instrument [Line Items] |  |
Borrowings |  | $ 150,200,000
Unamortized Deferred Issuance Costs / Discount |  | (1,282,000)
Net Carrying Value |  | $ 148,918,000
Weighted Average Interest Rate (as a percent) | 5.625% | 5.625%
5.75% exchangeable senior notes | Convertible notes |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 162,092,000 | $ 162,092,000
Unamortized Deferred Issuance Costs / Discount | (1,793,000) | (2,410,000)
Net Carrying Value | $ 160,299,000 | $ 159,682,000
Weighted Average Interest Rate (as a percent) | 5.75% | 5.75%
7.75% convertible senior notes | Convertible notes |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 215,000,000 | $ 215,000,000
Unamortized Deferred Issuance Costs / Discount | (5,274,000) | (6,142,000)
Net Carrying Value | $ 209,726,000 | $ 208,858,000
Weighted Average Interest Rate (as a percent) | 7.75% | 7.75%

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