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4. Investment in Pemberwick Fund (Details)
May 31, 2016
$ / shares
Mar. 30, 2016
USD ($)
$ / shares
Mar. 30, 2015
USD ($)
$ / shares
Details      
Weighted Average Duration of Pemberwick's assets in years   1.57  
Pemberwick Net Asset Value | $ / shares $ 10.04 $ 10.04 $ 10.06
Investment in Pemberwick Fund - a short duration bond fund   $ 345,488 $ 363,917
Unrealized gain reflected as accumulated other comprehensive income   1,236  
Aggregate interest revenue from investment in Pemberwick   $ 56,667