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Fair Value of Financial Instruments (Tables)
3 Months Ended
Jun. 30, 2013
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, which we consider to be a Level 2 input as described in the fair value accounting guidance on fair value measurements, and future principle payments, as of June 30, 2013 and March 31, 2013 is estimated as follows:

   
June 30, 2013
  
March 31, 2013
 
   
Carrying
Amount
  
Fair
Value
  
Carrying
Amount
  
Fair
Value
 
Note payable to a bank
 $2,493,700  $2,321,700  $2,550,000  $2,361,500 
Note payable to Baltimore County
 $151,900  $140,200  $158,000  $145,300