Note 7 - Income Taxes (Detail) - Deferred Taxes (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
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)	(50,312)	(47,350)
Net deferred tax asset	$ 0	$ 0

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.

+ References+ Details

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

+ References+ Details

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

+ References+ Details

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.

+ References+ Details

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

+ References+ Details

- Definition

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

+ References+ Details