Stock-Based Compensation and Stock Options (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Dec. 31, 2015	Oct. 31, 2015	Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 144,000	$ 113,000
Total intrinsic value of options outstanding	125,000
Unrecognized compensation expense related to outstanding stock options	$ 493,000
Compensation expense recognition, weighted average period	2 years 2 months 12 days
Stock-based compensation expense	$ 144,000	113,000
Shares of common stock for future issuance	57,834
Excess tax benefit	$ 0	$ 0
Options granted	25,305
Shares outstanding	203,205	52,650		177,900	52,650
Unvested shares	49,327	57,701		49,993	57,035
Total intrinsic value of options exercisable	$ 1,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to outstanding restricted stock awards	$ 135,000
Compensation expense recognition, weighted average period	1 year 3 months 11 days
Director Stock Awards In Lieu Of Cash Retainer Fees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issued shares	1,703	1,665
Stock-based compensation expense	$ 11,000	$ 11,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock for future issuance	200,000
Purchase price of common stock expressed as a percentage of its fair market value, percent	85.00%
Employees stock purchase plan, shares purchased			11,248
Employees stock purchase plan, price per share			$ 4.47
Amount withheld from employees participating in the Employee Stock Purchase Plan	$ 8,000
Non-Employee Consultant [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share awards expense recognized	$ 3,000