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Fair Value Measurements - Summary of Carrying Value and Fair Value of Debt Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt obligations carrying value	$ 438,000	$ 403,000
Debt obligations fair value	405,036	368,817
SBA Debentures
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt obligations carrying value	188,000	153,000
Debt obligations fair value	188,000	153,000
January 2026 Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt obligations carrying value	125,000	125,000
Debt obligations fair value	112,417	111,854
November 2026 Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt obligations carrying value	125,000	125,000
Debt obligations fair value	104,619	103,963
Credit Facility Borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt obligations carrying value	0	0
Debt obligations fair value	$ 0	$ 0

X

- Definition

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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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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