Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Accounts receivable, allowance for doubtful accounts	$ 6	$ 6
Common stock, par value (in dollars per share)	$ 0.02	$ 0.02
Common stock, authorized shares (in shares)	50,000,000	50,000,000
Common stock, issued shares (in shares)	5,564,799	5,488,038
Common stock, outstanding shares (in shares)	5,564,799	5,488,038