Note 6 - Income Taxes (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Loss Carryforwards	$ 46,600,000
Deferred Tax Assets, Operating Loss Carryforwards	(15,872,000)	(14,862,000)
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	4,500,000
Income Tax Reconciliation, Tax Credits, Foreign	(84,000)	81,000	118,000
Liability for Uncertain Tax Positions, Current	820,000	784,000
French Subsidiary [Member]
Income Tax Reconciliation, Tax Credits, Foreign	297,000
Potential Liability [Member] | France [Member]
Liability for Uncertain Tax Positions, Current	722,000	712,000
Possible Interest [Member] | France [Member]
Liability for Uncertain Tax Positions, Current	72,000	46,000
Potential Penalty [Member] | France [Member]
Liability for Uncertain Tax Positions, Current	26,000	26,000
Foreign Tax Authority [Member]
Liability for Uncertain Tax Positions, Current	80,000	80,000
France [Member]
Liability for Uncertain Tax Positions, Current	820,000	784,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	820,000
Non-Qualified Option Deductions [Member]
Deferred Tax Assets, Operating Loss Carryforwards	$ 3,600,000