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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of units distributed for payment of a unit distribution to unit-holder of a limited liability company (LLC).

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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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The aggregate amount of the participation liability at the end of the accounting period.

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Business (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 29, 2023	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Oct. 01, 2022	Mar. 02, 2020
Financial Highlights
Common stock, shares, issued (in shares)						4,574,470.35
Participating mortgage loans, participation liabilities, amount						$ 49.8
Cash						$ 25.5
Class B Common Stock
Financial Highlights
Common stock, shares, issued (in shares)		24,338,919	24,337,952
Common stock, par or stated value per share (in usd per share)		$ 0.01	$ 0.01	$ 0.01
Partnership interest \| Terra Fund 7
Financial Highlights
Beneficial ownership interest (as percent)		8.70%
Partnership interest \| Terra Offshore REIT
Financial Highlights
Beneficial ownership interest (as percent)		10.10%
Terra BDC \| Class B Common Stock
Financial Highlights
Common stock, shares, issued (in shares)					4,847,910
Common stock, par or stated value per share (in usd per share)					$ 0.01
Terra Fund 5 \| Stock Distribution
Financial Highlights
Distribution made to limited liability company (LLC) member, unit distribution (in shares)	2,252.02
Minimum
Financial Highlights
Loan origination amount		$ 10.0
Maximum
Financial Highlights
Loan origination amount		$ 50.0