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Debt Obligations - Senior Unsecured Notes, Summary (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2023	May 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Debt Obligations
Weighted average rate (as a percent)	7.06%	7.06%
Redemption of aggregate principal amount (as a percent)		100.00%
Outstanding principal balance repaid		$ 47,400
Senior Unsecured Notes
Debt Obligations
Debt, Face Value (UPB)	$ 1,423,850	1,423,850		$ 1,399,600
Carrying value	$ 1,409,899	$ 1,409,899		$ 1,385,994
Weighted average rate (as a percent)	5.42%	5.42%		5.40%
Deferred financing fees	$ 14,000	$ 14,000		$ 13,600
Weighted average note rate including certain fees and costs (as a percent)	5.72%	5.72%		5.69%	5.72%	5.72%
Senior Unsecured Notes
Debt Obligations
Interest rate (as a percent)	8.00%	8.00%
Proceeds from issuance of unsecured notes	$ 93,400
Amount utilized to repurchase a portion of unsecured notes	$ 70,800
5.625% Notes
Debt Obligations
Interest rate (as a percent)	5.625%	5.625%
5.625% Notes | Subsequent
Debt Obligations
Interest rate (as a percent)			5.625%
7.75% senior unsecured notes
Debt Obligations
Carrying value	$ 95,000	$ 95,000
Interest rate (as a percent)	7.75%	7.75%

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- Definition

The cash outflow of amount used from proceeds of unsecured notes in purchase of another unsecured notes.

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Represents the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding, including certain fees and costs.

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The cash outflow of amount used for repaying the outstanding principal amount of debt.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage of principal amount of debt redeemed.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt.

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