Exit Costs (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	4 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 Employee Termination Benefits [Member]	Apr. 30, 2013 Employee Termination Benefits [Member]	Apr. 30, 2014 Employee Termination Benefits [Member]	Apr. 30, 2013 Employee Termination Benefits [Member]	Apr. 30, 2014 Other Associated Costs [Member]	Apr. 30, 2013 Other Associated Costs [Member]	Apr. 30, 2014 Other Associated Costs [Member]	Apr. 30, 2013 Other Associated Costs [Member]	Apr. 30, 2014 Termination Costs [Member]	Jan. 31, 2014 Termination Costs [Member]
Exit Costs [Abstract]
Current liability related to employee termination benefits	$ 177,000		$ 177,000										$ 177,000	$ 241,000
Exit Costs [Line Items]
Exit costs, incurred	64,000	0	578,000	0	34,000	0	533,000	0	30,000	0	45,000	0
Exit costs, cumulative			578,000				533,000				45,000
Exit costs, expected to be incurred			1,164,000				1,085,000				79,000
Contract Termination Costs [Abstract]
Exit Liabilities, beginning of period													241,000	0
Additions	64,000	0	578,000	0									64,000	514,000
Payments													(128,000)	(273,000)
Exit Liabilities, end of period	$ 177,000		$ 177,000										$ 177,000	$ 241,000