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4. Investment in Pemberwick Fund (Details) (USD $)
May 31, 2013
Mar. 30, 2013
Mar. 30, 2012
Details      
Weighted Average Duration of Pemberwick's assets in years   1.85  
Pemberwick Net Asset Value $ 10.10 $ 10.12 $ 10.02
Investment in Pemberwick Fund - a short duration bond fund   $ 819,873 $ 801,449
Unrealized gain reflected as accumulated other comprehensive income   9,799  
Aggregate interest revenue from investment in Pemberwick   $ 36,491