Note 8 - Discontinued Operations (Detail) - Discontinued Oil and Gas Operations, Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current Assets:
Accounts receivable, net		$ 594
Total Current Assets		594
Other assets		2
Total Assets of Discontinued Operations		596
Current Liabilities:
Trade payables	3	19
Revenues and royalties payable	17	323
Accrued liabilities and other	227	1,050
Total Current Liabilities	247	1,392
Total Liabilities of Discontinued Operations	$ 247	$ 1,392