Note 11 - Capital Stock (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Jul. 23, 2012
Note 11 - Capital Stock (Details) [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		850,000
Percent of Oustanding Stock		5.00%
Stock Repurchased During Period, Shares	419,564
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 25.89
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	154,136
Prior to New Stock Repurchase Program [Member]
Note 11 - Capital Stock (Details) [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		700,000