Note 16 - Oil And Gas Disclosures (Unaudited) (Detail) - Cost Relating to Property Acquisition, Exploration and Development Activities (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Proved	$ 2,451
Unproved	0
Exploration	0
Development	502
Total domestic costs incurred	$ 2,953

- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

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- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves.

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- Definition

Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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- Definition

Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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