XML 25 R6.htm IDEA: XBRL DOCUMENT
v3.21.2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
--- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
Statement of Financial Position [Abstract] |  |  |
Cash dividends declared (in dollars per share) | $ 0.40 | $ 0.40 | $ 0.40
Accrual of dividend equivalents (in dollars per share) | $ 0.40 | $ 0.40 | $ 0.40

X
- Definition Dividend Equivalent, Per Share, Declared + References No definition available. + Details
Name: | cmtl_DividendEquivalentPerShareDeclared
Namespace Prefix: | cmtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfFinancialPositionAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration