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Condensed Consolidated Statement of Equity - Unaudited - 6 months ended Jun. 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 92,824 shares of common stock $ (4,605)       (4,605) (4,605)  
Net income 28,184     22,659   22,659 5,525
Repurchase of non-controlling interests (61)   126     126 (187)
Balance at Jun. 30, 2017 $ 89,398 $ 383 $ 8,439 $ 118,981 $ (51,078) $ 76,725 $ 12,673
Balance, shares at Jun. 30, 2017 3,836,397 3,836,397