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(6) Redeemable Preferred Stock (Tables)
3 Months Ended
Jun. 30, 2013
Equity [Abstract]  
Schedule of redeemable preferred stock
 
    June 30,
2013
    March 31,
2013
 
Series D Convertible Participating Preferred Stock, par value  $0.001, stated value $1.00, 2,500,000 shares designated, 2,500,000 shares issued and outstanding at June 30, 2013 and March 31, 2013; redemption and liquidation value $3,826,014 at June 30, 2013   $ 3,274,957     $ 3,132,882