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Shareholders' and Member's Equity - Schedule of Dividends and Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2025
Class A Shares |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  |  |  | $ 10,159
OpCo unitholders |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  |  |  | 20,489
LandBridge |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Tax distributions | $ 3,177 | $ 7,140 | $ 16,650 | $ 5,821 | $ 32,788
O 2025 Q1 Dividends |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Date of Record |  |  |  | Mar. 06, 2025 |
Dividends, rate per share |  |  |  | $ 0.1 |
O 2025 Q1 Dividends | Class A Shares |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  |  | $ 2,326 |
O 2025 Q1 Dividends | OpCo unitholders |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  |  | $ 5,319 |
O 2025 Q2 Dividends |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Date of Record |  |  | Jun. 05, 2025 |  |
Dividends, rate per share |  |  | $ 0.1 |  |
O 2025 Q2 Dividends | Class A Shares |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  | $ 2,515 |  |
O 2025 Q2 Dividends | OpCo unitholders |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  |  | $ 5,124 |  |
O 2025 Q3 Dividends |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Date of Record |  | Sep. 04, 2025 |  |  |
Dividends, rate per share |  | $ 0.1 |  |  |
O 2025 Q3 Dividends | Class A Shares |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  | $ 2,534 |  |  |
O 2025 Q3 Dividends | OpCo unitholders |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid |  | $ 5,121 |  |  |
O 2025 Q4 Dividends |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Date of Record | Dec. 04, 2025 |  |  |  |
Dividends, rate per share | $ 0.1 |  |  |  |
O 2025 Q4 Dividends | Class A Shares |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid | $ 2,784 |  |  |  |
O 2025 Q4 Dividends | OpCo unitholders |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |
Dividends paid | $ 4,925 |  |  |  |

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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