NET INCOME (LOSS) PER COMMON SHARE (Details)	3 Months Ended	9 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
NET INCOME (LOSS) PER COMMON SHARE Details
Options to purchase common shares	1,991fil_OptionsToPurchaseCommonShares	9,306fil_OptionsToPurchaseCommonShares	995fil_OptionsToPurchaseCommonShares	9,306fil_OptionsToPurchaseCommonShares

Total change in each class of partners' capital accounts during the year due to option exercise. All partners include general, limited and preferred partners.

No definition available.

Name:	fil_OptionsToPurchaseCommonShares
Namespace Prefix:	fil_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration