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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Allowances for doubtful accounts (in dollars)	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	3,783,874	3,780,874
Common stock, shares outstanding	3,783,874	3,780,874
Treasury shares	5,049	5,049

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