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Consolidated Statement of Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Total Stockholders' Equity - PrimeEnergy [Member] | Non-Controlling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 | $ 62,901 | $ 383 | $ 7,854 | $ 92,878 | $ (5) | $ (45,380) | $ 55,730 | $ 7,171
Balance, shares at Dec. 31, 2015 |  | 3,836,397 |  |  |  |  |  |
Purchase shares of common stock | (1,093) |  |  |  |  | (1,093) | (1,093) |
Net income | 5,422 |  |  | 3,444 |  |  | 3,444 | 1,978
Other comprehensive income, net of taxes | 5 |  |  |  | $ 5 |  | 5 |
Purchase of non-controlling interest | (224) |  | 459 |  |  |  | 459 | (683)
Distributions to non-controlling interest | (1,131) |  |  |  |  |  |  | (1,131)
Balance at Dec. 31, 2016 | $ 65,880 | $ 383 | 8,313 | 96,322 |  | (46,473) | 58,545 | 7,335
Balance, shares at Dec. 31, 2016 | 3,836,397 | 3,836,397 |  |  |  |  |  |
Purchase shares of common stock | $ (5,650) |  |  |  |  | (5,650) | (5,650) |
Net income | 47,434 |  |  | 41,998 |  |  | 41,998 | 5,436
Purchase of non-controlling interest | (308) |  | 416 |  |  |  | 416 | (724)
Distributions to non-controlling interest | (4,917) |  |  |  |  |  |  | (4,917)
Balance at Dec. 31, 2017 | $ 102,439 | $ 383 | $ 8,729 | $ 138,320 |  | $ (52,123) | $ 95,309 | $ 7,130
Balance, shares at Dec. 31, 2017 | 3,836,397 | 3,836,397 |  |  |  |  |  |

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