Condensed Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2012	Mar. 31, 2012
Allowance for doubtful accounts (in Dollars) (in Dollars)	$ 94,000	$ 108,000
Preferred stock par value (in Dollars per share) (in Dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in Shares)	50,000	50,000
Common stock, par value (in Dollars per share) (in Dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized (in Shares)	4,000,000	4,000,000
Common stock, shares issued (in Shares)	2,446,286	2,446,286
Common stock, shares outstanding (in Shares)	2,446,286	2,446,286