Note 5 - Other Assets (Tables)

6 Months Ended

Sep. 30, 2015

Notes Tables

Schedule of Other Assets, Noncurrent [Table Text Block]

	September 30,		March 31,
	2015		2015
	(unaudited)
Marketable equity securities	$	1,263	$	1,737
Auction rate preferred securities		350		350
Long-term equity investments		10,895		11,041
Other items		626		576
Total	$	13,134	$	13,704