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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2015
Mar. 31, 2015
Statement of Financial Position [Abstract]    
Allowances on trade accounts receivable $ 21 $ 62
Preferred stock, par value $ 1 $ 1
Preferred stock, shares authorized 500,000 500,000
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 25,500,000 25,500,000
Common stock, shares issued 10,469,000 10,433,000
Common stock, shares outstanding 10,169,000 10,133,000
Treasury stock, shares 299,000 299,000