Legal Proceedings and Other Matters Commitments and Contingencies (Details)	1 Months Ended				3 Months Ended		6 Months Ended
	May 31, 2018 USD ($)	May 31, 2018 action	May 31, 2018 transaction	Oct. 31, 2014 USD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
Loss Contingencies [Line Items]
Settlement Of Intellectual Property Litigation					$ 0	$ 3,204,000	$ 0	$ 3,204,000
Legacy TCS 911 Call Handling Software Matter [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss					$ 14,000,000		$ 14,000,000
Other Matters
Loss Contingencies [Line Items]
Sales value of equipment				$ 288,000
Approximate number of transactions audited by the Office of Export Enforcement relating to international shipments by Xicom Technologies, Inc. | transaction			7,800
Number of transactions that may not have been fully in compliance with the Export Administrative Regulations, based on Company's self assessment of transactions audited		6	6
Aggregated value of international shipments that may not have been fully in compliance with Export Administration Regulations (less than)	$ 100,000