Note 13 - Share-Based Compensation (Details) - Summary of Stock-Settled Stock Appreciation Rights Transactions (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 13 - Share-Based Compensation (Details) - Summary of Stock-Settled Stock Appreciation Rights Transactions [Line Items]
Outstanding	557,029	614,917	671,500
Outstanding (in Dollars per share)	$ 11.51	$ 11.24	$ 10.66
Granted	202,884	194,223
Granted (in Dollars per share)	$ 11.43	$ 12.62
Exercised	(206,441)	(138,252)
Exercised (in Dollars per share)	$ 10.73	$ 9.32
Cancelled	(23,181)	(26,154)
Cancelled (in Dollars per share)	$ 11.67	$ 12.37
Stock Appreciation Rights (SARs) [Member]
Note 13 - Share-Based Compensation (Details) - Summary of Stock-Settled Stock Appreciation Rights Transactions [Line Items]
Outstanding	226,406	176,476	257,424
Outstanding (in Dollars per share)	$ 11.52	$ 11.60	$ 11.32
Granted	59,716	65,752
Granted (in Dollars per share)	$ 11.29	$ 13.15
Exercised	(9,786)	(134,304)
Exercised (in Dollars per share)	$ 11.73	$ 11.67
Cancelled		(12,396)
Cancelled (in Dollars per share)		$ 13.15