Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Accounts receivable, allowances (in Dollars)	$ 133	$ 117
Preferred Stock Par Value (in Dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Authorized Shares	5,000	5,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, Authorized Shares	100,000	100,000
Common Stock, Shares Issued	47,793	47,614
Common stock, Shares Outstanding	47,793	47,614
Treasury Stock, Shares	65	59