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(8) Stockholders' Equity (Tables)
 12 Months Ended
Mar. 31, 2013
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]  
Schedule of option activity under all plans

                         
    Weighted
average
exercise
price		     Number
of
options		     Weighted
average
remaining
contractual
term		     Aggregate
intrinsic
value		  
                         
Balance at March 31, 2011   $ 0.60       3,048,677       8.55     $ 701,196  
Granted     —       —                  
Exercised     —       —                  
Canceled   $ 2.08       (234,375 )                
                                 
Balance at March 31, 2012   $ 0.56       2,814,302       8.06     $ 1,328,393  
Granted     —       —                  
Exercised   $ 0.43       (144,437 )                
Canceled   $ 0.43       (144,437 )                
Balance at March 31, 2013 (vested and expected to vest)   $ 0.49       2,525,428       7.05     $ 2,171,868  
Exercisable at March 31, 2013   $ 0.54       1,297,716       7.16     $ 1,051,150  
Schedule of all non-vested stock activity

                         
    Weighted
average
grant date
fair value		     Number
of
shares		     Aggregate
Intrinsic
Value		     Weighted
average
remaining
contractual
term		  
                         
Unvested at March 31, 2011   $ 1.96       500,845     $ 415,701       2.62  
                                 
Awarded   $ 0.71       250,500                  
Vested   $ 2.05       (149,490 )                
Forfeited   $ 1.21       (20,000 )                
                                 
Unvested at March 31, 2012   $ 1.62       581,855     $ 535,307       2.06  
                                 
Awarded   $ 0.90       160,000                  
Vested   $ 1.87       (197,739 )                
Forfeited   $ 0.88       (58,500 )                
                                 
Unvested at March 31, 2013   $ 1.36       485,616     $ 655,582       1.70