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Fair Value Measurements (Details) (USD $)
Dec. 31, 2014
Mar. 31, 2014
Available-for-sale securities, fair value $ 94,356,284us-gaap_AvailableForSaleSecurities $ 94,382,401us-gaap_AvailableForSaleSecurities
Fair Value, Inputs, Level 1 [Member]    
Available-for-sale securities, fair value 92,963,032us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 89,934,059us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 2 [Member]    
Available-for-sale securities, fair value $ 1,393,252us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 $ 4,448,342us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member