Note 16 - Oil And Gas Disclosures (Unaudited) (Detail) - Estimates of Proved Crude Oil and Nature Gas Reserves	12 Months Ended
	Dec. 31, 2012 bbl		Dec. 31, 2010 bbl
Oil [Member]
As of December 31, 2011			0
As of December 31, 2012	17,000	[1]	0
Proved developed reserves at:
December 31, 2012	17,000
Proved undeveloped reserves at:
December 31, 2012	0
Extensions and discoveries	0
Revisions	0
Production	(4,000)
Purchases of reserves in place	21,000
Sales of reserves in place	0
Natural Gas [Member]
As of December 31, 2011			0
As of December 31, 2012	29,000	[1]	0
Proved developed reserves at:
December 31, 2012	29,000
Proved undeveloped reserves at:
December 31, 2012	0
Extensions and discoveries	0
Revisions	0
Production	(6,000)
Purchases of reserves in place	35,000
Sales of reserves in place	0

[1] All reserves were held within the United States for the years ended December 31, 2012.