Note 13 - Asset Retirement Obligations (Tables) |
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| Schedule of Change in Asset Retirement Obligation [Table Text Block] |
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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