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Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Acquisitions: |  |  |  |  |  |
Acreage purchases | [1] | $ 8,574 |  |  | $ 21,942 |
Development | [1] | 107,987 |  |  | 381,753 |
Gas gathering facilities: |  |  |  |  |  |
Development | [1] | 7 |  |  | 3,402 |
Subtotal | [1] | 121,267 |  |  | 436,981 |
Asset retirement obligations |  | 1,377 | [1] | $ 761 | 18,634 | [1]
Total costs incurred | [1] | 122,644 |  |  | 455,615 |
Exploration Expense |  |  |  |  |  |
Exploration: |  |  |  |  |  |
Drilling | [1] | 0 |  |  | 6,329 |
Expense | [1] | 4,247 |  |  | 22,048 |
Stock-based compensation expense | [1] | $ 452 |  |  | $ 1,507 |
[1] | Includes costs incurred whether capitalized or expensed.

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