Note 9 - 401(k) Profit Sharing, Deferred Compensation and Long-term Incentive Plans - Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation expense	$ 1,081	$ 1,812	$ 1,877
Total discretionary contribution	$ 1,785	$ 2,249	$ 2,450
Guaranteed annual return	5.25%	5.25%	5.25%