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Fair Value of Financial Instruments (Tables)
6 Months Ended
Sep. 30, 2012
Fair Value of Financial Instruments [Abstract]  
Fair Value of Long-term Debt
Fair value of long term debt is calculated using current market interest rates and future principal payments, as of September 30, 2012 and April 1, 2012 is estimated as follows:

   
September 30, 2012
  
April 1, 2012
 
   
Carrying
Amount
  
Fair
Value
  
Carrying
Amount
  
Fair
Value
 
Note payable to a bank
 $2,662,600  $2,440,000  $2,775,000  $2,517,000 
Note payable to Baltimore County
 $170,100  $155,300  $182,200  $165,000