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Note 7 - Fair Value Measurements (Details) - The Changes on the Value of the Warrants (USD $)	9 Months Ended
	Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Issuances	$ 232,000
Change in fair value	56,000
Fair value – end of period	288,000
Fair value – end of period	265,000
Tribute Warrant [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Issuances	334,000
Change in fair value	(69,000)
Fair value – end of period	$ 265,000

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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