Note 7 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2012			2011
Deferred tax assets:
Net operating losses	$	50,502		$	44,850
Fixed asset basis difference		7,141			7,177
Contributions carryover		2			2
Deferred compensation		2,367			2,230
Accrued liabilities		29			529
Total deferred tax assets		60,041			54,788
Valuation allowance for deferred tax assets		(60,041	)		(54,788	)
Net deferred tax asset	$	-		$	-

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year Ended December 31,
	2012			2011			2010
Expected federal income tax benefit at 34%	$	(6,614	)	$	(5,720	)	$	(5,405	)
Loss with no tax benefit provided		5,535			4,880			4,545
State income tax		10			7			6
State tax benefit		(321	)		0			0
Stock Options		0			(6	)		154
Non-deductible expenses and other		1,079			846			706
Income (benefit) tax expense	$	(311	)	$	7		$	6