Note 9 - Income Taxes (Detail) (USD $)	12 Months Ended							3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2009	Dec. 31, 2012 Alternative Minimum Tax [Member]	Dec. 31, 2012 Statutory Depletion [Member]	Dec. 31, 2012 Capital Loss Carryforward [Member]	Jun. 30, 2012 IRS Examination [Member]	Dec. 31, 2011 IRS Examination [Member]	Jun. 30, 2009 BWI [Member]
Operating Loss Carryforwards	$ 98,000,000
Other Tax Carryforward, Gross Amount					79,000,000	9,000,000	8,000,000
Noncontrolling Interest, Ownership Percentage by Parent		100.00%	52.09%							19.50%
Deferred Tax Liabilities, Net				573,000
Maximum Effective Rate, Texas Margin Tax	0.70%
Liability for Uncertain Tax Positions, Current		225,000							225,000
Income Tax Expense (Benefit)	$ (80,000)	$ (573,000)						$ (73,000)