Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Allowances on trade accounts receivable	$ 53	$ 43
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	500	500
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	25,500	25,500
Common stock, shares issued	10,326	10,297
Treasury stock, shares	336	346

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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