STOCKHOLDERS EQUITY Narrative (Details) - $ / shares	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Stockholders' Equity
Par Value Per Share	$ 0.10	$ 0.10
Relative Total Dividend Rate - Common Stock Plus Class A Versus Class A Plus Class B Stock	133.33%
Number of Shares Authorized to be Repurchased	3,966,771
Common Stock
Stockholders' Equity
Shares Authorized	15,000,000	15,000,000
Par Value Per Share	$ 0.10	$ 0.10
Voting Rights	one
Relative Dividend Rate - Common Stock Versus Class B Stock	133.33%
Shares Repurchased, Board Approved, Cummulative	3,365,949
Common Class B
Stockholders' Equity
Shares Authorized	7,000,000	7,000,000
Par Value Per Share	$ 0.10	$ 0.10
Voting Rights	ten
Shares Repurchased, Board Approved, Cummulative	342,241
Class A Common Stock
Stockholders' Equity
Shares Authorized	30,000,000	30,000,000
Shares Outstanding	0
Voting Rights	0