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SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
3 Months Ended
Jun. 30, 2012
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Jun. 30, 2011
Mar. 31, 2012
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Derivative Financial Instruments      
Number of interest rate swap transactions 2   2
Selling, General, and Administrative Expense      
Selling, general and administrative expenses $ 2,000,412 $ 1,732,672  
Stock Based Compensation      
Stock based compensation cost $ 141,359 $ 120,261  
Minimum
     
Operating leases      
Renewal period of long-term, non-cancelable operating lease agreements 3 months    
Maximum
     
Operating leases      
Renewal period of long-term, non-cancelable operating lease agreements 5 years