Note 15 - Stock-Based Compensation (Details) - Summary of Stock Option Weighted Average Assumptions (Non-Employee Directors' Stock Option Plan [Member])	0 Months Ended
	Jan. 15, 2014	Jan. 15, 2013	Jan. 15, 2012
Non-Employee Directors' Stock Option Plan [Member]
Note 15 - Stock-Based Compensation (Details) - Summary of Stock Option Weighted Average Assumptions [Line Items]
Risk-free interest rate	1.66%	0.89%	0.94%
Expected life (in years)	5 years 146 days	5 years 146 days	5 years 146 days
Expected volatility	28.90%	32.00%	34.00%
Dividend yield	1.35%	1.30%	1.11%