Summary of Significant Accounting and Reporting Policies (Disaggregation of Revenue) (Details) - USD ($)	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 499,528,000	$ 540,403,000	$ 549,994,000
Point in time
Disaggregation of Revenue [Line Items]
Net sales	149,745,000	136,648,000	200,776,000
Over time
Disaggregation of Revenue [Line Items]
Net sales	349,783,000	403,755,000	349,218,000
Firm fixed-price
Disaggregation of Revenue [Line Items]
Net sales	443,430,000	491,762,000	500,720,000
Cost reimbursable
Disaggregation of Revenue [Line Items]
Net sales	56,098,000	48,641,000	49,274,000
U.S. government
Disaggregation of Revenue [Line Items]
Net sales	151,321,000	182,320,000	171,978,000
Domestic
Disaggregation of Revenue [Line Items]
Net sales	243,112,000	242,159,000	245,899,000
Total United States
Disaggregation of Revenue [Line Items]
Net sales	394,433,000	424,479,000	417,877,000
International
Disaggregation of Revenue [Line Items]
Net sales	105,095,000	115,924,000	132,117,000
Satellite and Space Communications
Disaggregation of Revenue [Line Items]
Net sales	269,265,000	324,069,000	337,756,000
Satellite and Space Communications \| Point in time
Disaggregation of Revenue [Line Items]
Net sales	147,859,000	135,070,000	197,808,000
Satellite and Space Communications \| Over time
Disaggregation of Revenue [Line Items]
Net sales	121,406,000	188,999,000	139,948,000
Satellite and Space Communications \| Firm fixed-price
Disaggregation of Revenue [Line Items]
Net sales	213,167,000	275,428,000	288,482,000
Satellite and Space Communications \| Cost reimbursable
Disaggregation of Revenue [Line Items]
Net sales	56,098,000	48,641,000	49,274,000
Satellite and Space Communications \| U.S. government
Disaggregation of Revenue [Line Items]
Net sales	148,411,000	179,816,000	168,411,000
Satellite and Space Communications \| Domestic
Disaggregation of Revenue [Line Items]
Net sales	35,956,000	48,793,000	56,568,000
Satellite and Space Communications \| Total United States
Disaggregation of Revenue [Line Items]
Net sales	184,367,000	228,609,000	224,979,000
Satellite and Space Communications \| International
Disaggregation of Revenue [Line Items]
Net sales	84,898,000	95,460,000	112,777,000
Allerium
Disaggregation of Revenue [Line Items]
Net sales	230,263,000	216,334,000	212,238,000
Allerium \| Point in time
Disaggregation of Revenue [Line Items]
Net sales	1,886,000	1,578,000	2,968,000
Allerium \| Over time
Disaggregation of Revenue [Line Items]
Net sales	228,377,000	214,756,000	209,270,000
Allerium \| Firm fixed-price
Disaggregation of Revenue [Line Items]
Net sales	230,263,000	216,334,000	212,238,000
Allerium \| Cost reimbursable
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Allerium \| U.S. government
Disaggregation of Revenue [Line Items]
Net sales	2,910,000	2,504,000	3,567,000
Allerium \| Domestic
Disaggregation of Revenue [Line Items]
Net sales	207,156,000	193,366,000	189,331,000
Allerium \| Total United States
Disaggregation of Revenue [Line Items]
Net sales	210,066,000	195,870,000	192,898,000
Allerium \| International
Disaggregation of Revenue [Line Items]
Net sales	$ 20,197,000	$ 20,464,000	$ 19,340,000

COMTECH TELECOMMUNICATIONS CORP /DE/ 10-K