Note 17 - Share-based Compensation (Details) - Inputs Used for Valuation of Option Grants under Stock Option Plans	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Minimum [Member]
Note 17 - Share-based Compensation (Details) - Inputs Used for Valuation of Option Grants under Stock Option Plans [Line Items]
Expected volatility	45.80%	46.90%	45.80%	46.90%
Weighted-average volatility	45.80%	47.10%	45.80%	47.10%
Expected dividends	1.90%	2.79%	1.90%	2.79%
Risk-free rate	2.20%	0.80%	2.20%	0.80%
Average risk-free rate	2.20%	1.10%	2.20%	1.10%
Expected term (in years)	7 years 73 days	5 years 292 days	7 years 73 days	5 years 292 days
Pre-vesting departure rate	0.50%	0.40%	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	45.80%	47.10%	46.20%	47.40%
Weighted-average volatility	45.80%	47.10%	46.20%	47.30%
Expected dividends	1.90%	2.79%	2.09%	3.02%
Risk-free rate	2.20%	1.10%	2.20%	1.50%
Average risk-free rate	2.20%	1.10%	2.20%	1.40%
Expected term (in years)	7 years 73 days	7 years 73 days	7 years 73 days	7 years 73 days
Pre-vesting departure rate	0.50%	4.10%	0.50%	4.10%