Note 5 - Other Assets - Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Marketable equity securities	$ 1,749	$ 1,737
Auction rate preferred securities	350	350
Long-term equity method investments	10,977	11,041
Other items	686	576
Total	$ 13,762	$ 13,704