Cash Flow Information (Tables)

9 Months Ended

Apr. 30, 2013

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Supplemental disclosure:	Nine Months Ended
	April 30
	2013		2012
Interest paid, net of capitalized interest of $15,217 (2013)
and $1,269 (2012)	$	325,080	$	429,680
Income taxes paid	$	594,382	$	117,395