Certificates of Deposit and Marketable Securities (Details) (USD $) | Nov. 30, 2014 | 31-May-14 |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | $1,023,800 | $1,514,856 |
Fair Value, Measurements, Recurring [Member] | Certificates of Deposit [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 994,000 | 1,493,000 |
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 29,800 | 21,856 |
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 29,800 | 21,856 |
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Certificates of Deposit [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | | |
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Equity Securities [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 29,800 | 21,856 |
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 994,000 | 1,493,000 |
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Certificates of Deposit [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | 994,000 | 1,493,000 |
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equity Securities [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | | |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | | |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Certificates of Deposit [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | | |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Securities [Member] | | |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | | |