Certificates of Deposit and Marketable Securities (Details) (USD $) | Feb. 28, 2015 | 31-May-14 |
Summary of assets measured at fair value on recurring basis | | |
Assets measured at fair value, Total | $1,519,600 | $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 | 1,493,000 | 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 | 26,600 | 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 | 26,600 | 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 | 26,600 | 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 | 1,493,000 | 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 | 1,493,000 | 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 | | |