Note 14 - Stockholders' Equity (Details) - Performance Stock Unit Valuation Assumptions	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Note 14 - Stockholders' Equity (Details) - Performance Stock Unit Valuation Assumptions [Line Items]
Expected life (years) (a)			5 years 36 days	[1]	4 years 73 days	[1]
Risk-free interest rate (c)		[2]	0.80%	[2]	0.80%	[2]
Volatility (b)		[3]	82.50%	[3]	85.80%	[3]
Dividend yield (d)		[4]		[4]		[4]
Performance Shares [Member]
Note 14 - Stockholders' Equity (Details) - Performance Stock Unit Valuation Assumptions [Line Items]
Expected life (years) (a)	2 years 328 days	[5]
Risk-free interest rate (c)	0.67%	[3]
Volatility (b)	64.60%	[6]
Dividend yield (d)	0.00%	[4]

[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.

[5] The expected life is the period between the grant date and the last day of the performance period.

[6] The risk-free interest rate is based on the observed U.S. Treasury yield curve in effect at the time the performance stock units were granted.