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Note 14 - Stockholders' Equity (Details) - Stock Option Valuation Assumptions (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Stock Option Valuation Assumptions [Abstract]      
Expected life (years) (a)   5 years 36 days [1] 4 years 73 days [1]
Risk-free interest rate (c)    [2] 0.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate [2] 0.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate [2]
Volatility (b)    [3] 82.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate [3] 85.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate [3]
Dividend yield (d)    [4]    [4]    [4]
Weighted-average fair value per share at grant date (in Dollars per share)   $ 1.78us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 2.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
[1] The expected life was derived based on a weighting between (a) the Company's historical exercise and forfeiture activity and (b) the average midpoint between vesting and the contractual term and (c) from the analysis of other companies of a similar size and operational life cycle.
[2] The risk-free interest rate is based on the observed U.S. Treasury yield curve in effect at the time the options were granted.
[3] The volatility is based on the historical volatility of our stock for a period approximating the expected life.
[4] The dividend yield is based on the fact the Company does not anticipate paying any dividends.