Note 4 - Inventories - Inventories (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Finished goods		$ 54,354	$ 57,887
Work in process		604	853
Raw materials		10,021	10,500
	[1]	$ 64,979	$ 69,240

[1] Inventories consist of the following: September 30, 2017 December 31, (Unaudited) 2016 Finished goods $ 54,904,000 $ 57,887,000 Work in process 690,000 853,000 Raw materials 10,366,000 10,500,000