Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Jul. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Legal Proceedings and Other Matters April 2021 Settlement of Litigation Related to the 2019 Acquisition of GD NG-911 In April 2021, we fully and finally settled two related lawsuits with a former employee and Motorola Solutions, Inc. ("Motorola"), and the cases were dismissed with the Court's approval. The resolution of this litigation, which related to our 2019 acquisition of GD NG-911, did not have a material negative impact on our consolidated results of operations, cash flows, or financial position. Other Matters In March 2021, Comtech Xicom Technology, Inc. (“Xicom”) reached an agreement with the U.S. Department of Commerce’s Bureau of Industry and Security (“BIS”) resolving a previously disclosed matter pending since 2017, which we made a voluntarily disclosure to the U.S. Department of Commerce Office of Export Enforcement (“OEE”). Based on our own audit of approximately 7,800 transactions, it was determined that for three (3) separate transactions between December 2015 and March 2017, Xicom engaged in conduct prohibited by the Export Administration Regulations (the “Regulations”) when it exported items subject to the Regulations from the United States to Russia, the United Arab Emirates, and Brazil without obtaining the necessary BIS authorizations required for exports to each of these countries. The exports were valued at $154,000. Upon discovery of this issue, we implemented additional controls and procedures and increased awareness of these specific export requirements throughout Comtech to help avoid similar occurrences in the future. Pursuant to the agreement with BIS, Xicom made a payment to BIS of $122,000 in April 2021. No other actions are to be taken by BIS or required of Xicom or Comtech in connection with this matter and we now considered the matter closed. In the ordinary course of business, we include indemnification provisions in certain of our customer contracts to indemnify, hold harmless and reimburse such customers for certain losses, including but not limited to losses related to third-party claims of intellectual property infringement arising from the customer’s use of our products or services. We may also, from time to time, receive indemnification requests from customers related to third-party claims that 911 calls were improperly routed during an emergency. We evaluate such claims as and when they arise. We do not always agree with customers that they are entitled to indemnification and in such cases reject their claims. Despite maintaining that we have properly carried out our duties, we may seek coverage under our various insurance policies; however, we cannot be sure that we will be able to maintain or obtain insurance coverage at acceptable costs or in sufficient amounts or that our insurer will not disclaim coverage as to such claims. Accordingly, pending or future claims asserted against us by a party that we agree to indemnify could result in legal costs and damages that could have a material adverse effect on our consolidated results of operations and financial condition. There are certain other pending and threatened legal actions which arise in the normal course of business. Although the ultimate outcome of litigation is difficult to accurately predict, we believe that the outcome of these other pending and threatened actions will not have a material adverse effect on our consolidated financial condition or results of operations. (b) Employment Change of Control and Indemnification AgreementsWe have an employment agreement with our CEO and Chairman. The employment agreement generally provides for an annual salary and bonus award. We have also entered into change of control agreements with certain of our executive officers and certain key employees. All of these agreements may require payments by us, in certain circumstances, including, but not limited to, a change in control of our Company or termination of the employee.