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Property And Equipment (Tables)
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12 Months Ended |
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Dec. 31, 2011
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| Property And Equipment [Abstract] |
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| Schedule Of Property And Equipment |
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December 31, |
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2011 |
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2010 |
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Oil and natural gas properties
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$ |
1,035,754,000 |
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$ |
747,344,000 |
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Office furniture and fixtures
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3,692,000 |
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3,277,000 |
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Building
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4,049,000 |
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4,049,000 |
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Land
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283,000 |
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283,000 |
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Total property and equipment
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1,043,778,000 |
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754,953,000 |
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累积损耗、折旧、摊销及减值
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(575,142,000 |
) |
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(512,822,000 |
) |
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Property and equipment, net
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$ |
468,636,000 |
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$ |
242,131,000 |
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| 不应摊销的石油和天然气资产摘要 |
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Costs Incurred in |
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2011 |
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2010 |
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2009 |
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Prior to 2009 |
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Total |
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Acquisition costs
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$ |
123,721,000 |
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$ |
8,144,000 |
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$ |
915,000 |
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$ |
132,000 |
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$ |
132,912,000 |
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Exploration costs
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689,000 |
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2,692,000 |
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155,000 |
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2,175,000 |
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5,711,000 |
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Development costs
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— |
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— |
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— |
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— |
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— |
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总石油和天然气资产不受摊销
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$ |
124,410,000 |
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$ |
10,836,000 |
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$ |
1,070,000 |
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$ |
2,307,000 |
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$ |
138,623,000 |
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| Schedule Of Asset Retirement Obligation |
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December 31, |
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2011 |
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2010 |
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资产退休义务，期初
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$ |
10,845,000 |
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$ |
10,153,000 |
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Liabilities incurred
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1,390,000 |
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1,328,000 |
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Liabilities settled
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(248,000 |
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(1,253,000 |
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Accretion expense
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666,000 |
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617,000 |
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期末资产退休义务
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12,653,000 |
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10,845,000 |
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Less current portion
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620,000 |
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635,000 |
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Asset retirement obligation, long-term
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$ |
12,033,000 |
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$ |
10,210,000 |
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