Note 16 - Oil And Gas Disclosures (Unaudited) (Detail) - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Future cash inflows	$ 1,694
Production costs	(422)
Development costs	0
Future income taxes	0
Future net cash flows	1,272
10% discount factor	(437)
Standardized measure of discounted future net cash flows (1)	$ 835	[1]

[1] Cash flows associated with asset retirement obligations are included in the Standardized Measure of Discounted Future Net Cash Flows.