CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Allowance for doubtful accounts (in dollars)	$ 8	$ 7
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000	5,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	40,000	40,000
Common stock, shares issued	20,268	20,190
Common stock, shares outstanding	20,268	20,190
Convertible Preferred Stock
Preferred stock, shares issued	3	3
Preferred stock, shares outstanding	3	3
Preferred stock, liquidation preference (in dollars per share)	$ 4	$ 4