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Consolidated Statement of Equity - 3 months ended Mar. 31, 2018 - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total Stockholders' Equity - PrimeEnergy [Member]
Non-Controlling Interest [Member]
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          
Purchase shares of common stock $ (3,379) $ 0 0 0 (3,379) (3,379) 0
Net income 3,301 0 0 3,286 0 3,286 15
Balance at Mar. 31, 2018 $ 102,361 $ 383 $ 8,729 $ 141,606 $ (55,502) $ 95,216 $ 7,145
Balance, shares at Mar. 31, 2018 3,836,397 3,836,397