3. Passur Network (Details) - USD ($)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Capitalized costs of PASSUR Network	$ 776,000	$ 1,489,000
Passur Network Depreciation	939,000	1,015,000
Cost of uninstalled PASSUR Systems	1,000,000	1,188,000
Cost of uninstalled SMLAT Systems	1,767,000	$ 1,625,000
Other Cost of Services	17,000
PASSUR Network
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	739,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	576,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	506,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	435,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 191,000