Note 7 - Deferred Compensation and Long-term Incentive Plan (Details) - Compensation Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Compensation Expense [Abstract]
Compensation expense	$ 381	$ 357	$ 1,458	$ 1,042