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Consolidated Statement Of Operations (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Revenues    
Oil and gas sales $ 88,429 $ 81,685
Realized gain on derivative instruments, net 7,601 3,578
Field service income 23,201 22,621
Administrative overhead fees 8,688 8,707
Unrealized gain (loss) on derivative instruments (914) 1,373
Other income 75 205
Total Revenues 127,080 118,169
Costs and Expenses    
Lease operating expense 36,897 34,984
Field service expense 17,242 14,315
Depreciation, depletion, amortization and accretion on discounted liabilities 48,400 45,688
Loss on settlement of asset retirement obligation   37
General and administrative expense 14,890 13,464
Exploration costs 38 91
Total Costs and Expenses 117,467 108,579
Gain on Sale and Exchange of Assets 1,602 1,725
Income from Operations 11,215 11,315
Other Income and Expenses    
Less: Interest expense 3,711 6,650
Add: Interest income 446 621
Income Before Provision for Income Taxes 7,950 5,286
Provision for Income Taxes 1,275 1,002
Net Income 6,675 4,284
Less: Net Income Attributable to Non-Controlling Interest 1,864 1,531
Net Income Attributable to PrimeEnergy $ 4,811 $ 2,753
Basic Income Per Common Share $ 1.75 $ 0.94
Diluted Income Per Common Share $ 1.38 $ 0.75