Stock-Based Compensation Plans (Schedule Of Changes In Non-Vested Option Shares) (Details) - 2010 Plan [Member]	3 Months Ended
	Oct. 31, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Non-vested, Beginning Balance	161,498
Number of Options, Granted
Number of Options, Vested	(8,750)
Number of Options, Forfeited	(2,500)
Number of Options, Non-vested, Ending Balance	150,248
Weighted Average Exercise Price, Non-vested, Beginning Balance | $ / shares	$ 2.99
Weighted Average Exercise Price, Vested | $ / shares	3.22
Weighted Average Exercise Price, Forfeited | $ / shares	1.00
Weighted Average Exercise Price, Non-vested, Ending Balance | $ / shares	$ 3.00