Note 17 - Share-based Compensation (Details) - Inputs Used for Valuation of Option Grants under Stock Option Plans	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Minimum [Member]
Note 17 - Share-based Compensation (Details) - Inputs Used for Valuation of Option Grants under Stock Option Plans [Line Items]
Expected volatility	46.20%	47.10%
Weighted-average volatility	46.20%	47.10%
Expected dividends	2.09%	3.02%
Risk-free rate	2.20%	1.10%
Average risk-free rate	2.20%	1.40%
Expected term (in years)	7 years 73 days	5 years 292 days
Pre-vesting departure rate	0.50%	0.40%
Maximum [Member]
Note 17 - Share-based Compensation (Details) - Inputs Used for Valuation of Option Grants under Stock Option Plans [Line Items]
Expected volatility	46.20%	47.40%
Weighted-average volatility	46.20%	47.40%
Expected dividends	2.09%	3.02%
Risk-free rate	2.20%	1.50%
Average risk-free rate	2.20%	1.40%
Expected term (in years)	7 years 73 days	7 years 73 days
Pre-vesting departure rate	0.50%	4.10%