Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Dec. 31, 2011	Mar. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Allowances for doubtful accounts and cash discounts	$ 37,276	$ 37,276
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	7,975,160	7,975,160
Treasury stock, shares	1,175,716	1,175,716