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Note 9 - Income Taxes (Detail) - Deferred Income Taxes (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Net operating loss carryforwards	$ 14,491	$ 16,728
Inventory	1,769	1,736
Other liabilities	3,055	2,229
Fixed assets	440	452
Other temporary differences	589	625
	20,344	21,770
Deferred tax valuation allowance	(20,344)	(3,268)
		$ 18,502

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

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

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

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.