Marketable Securities (Details) (USD $) | Nov. 30, 2013 | 31-May-13 |
Summary of assets measured at fair value on recurring basis | ' | ' |
Assets measured at fair value, Total | $1,760,072 | $2,008,424 |
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 | 1,741,000 | 1,989,000 |
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | ' | ' |
Summary of assets measured at fair value on recurring basis | ' | ' |
Assets measured at fair value, Total | 19,072 | 19,424 |
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | ' | ' |
Summary of assets measured at fair value on recurring basis | ' | ' |
Assets measured at fair value, Total | 19,072 | 19,424 |
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 | 19,072 | 19,424 |
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | ' | ' |
Summary of assets measured at fair value on recurring basis | ' | ' |
Assets measured at fair value, Total | 1,741,000 | 1,989,000 |
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 | 1,741,000 | 1,989,000 |
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 | ' | ' |