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Condensed Consolidated Statement of Equity - Unaudited - 9 months ended Sep. 30, 2017 - 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, 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          
Repurchase 101,207 shares of common stock $ (5,000)       (5,000) (5,000)  
Net income 26,294     20,648   20,648 5,646
Repurchase of non-controlling interests (60)   127     127 (187)
Distribution of non-controlling interests (4,410)           (4,410)
Balance at Sep. 30, 2017 $ 82,704 $ 383 $ 8,440 $ 116,970 $ (51,473) $ 74,320 $ 8,384
Balance, shares at Sep. 30, 2017 3,836,397 3,836,397