Note 14 - Stock-Based Compensation (Details) - Stock Purchase Plan (Employee Stock Purchase Plan [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Purchase Plan [Member]
Note 14 - Stock-Based Compensation (Details) - Stock Purchase Plan [Line Items]
Shares granted	27,415	29,671	34,860
Shares purchased	27,110	31,554	36,174
Weighted average fair value per share granted (in Dollars per share)	$ 2.10	$ 1.71	$ 1.68