XML 76 R63.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2017 | Jan. 31, 2022 USD ($) $ / shares shares | Oct. 31, 2021 $ / shares shares | Jan. 31, 2021 USD ($) | Jan. 31, 2022 USD ($) $ / shares shares | Jan. 31, 2021 USD ($) | Jul. 31, 2019 | Jul. 31, 2021 USD ($) | Jul. 31, 2020 | Jul. 31, 2018
Dividend Equivalents [Abstract] |  |  |  |  |  |  |  |  |  |
Accrual of dividend equivalents, net of reversal ($0.10 per share) |  | $ (129,000) |  | $ (49,000) | $ (217,000) | $ (191,000) |  |  |  |
Carrying value at period end |  | 425,123,000 |  |  | 425,123,000 |  |  | $ 492,392,000 |  |
Income tax (expense) benefit from settlement of stock-based awards |  | $ 86,000 |  | (8,000) | $ 139,000 | (207,000) |  |  |  |
Performance shares, RSUs, Restricted stock and share units |  |  |  |  |  |  |  |  |  |
Awards (In Shares) |  |  |  |  |  |  |  |  |  |
Outstanding, Beginning Balance (in shares) | shares |  | 1,065,341 | 1,068,370 |  | 1,068,370 |  |  |  |  |
Granted (in shares) | shares |  | 187,658 | 228,161 |  |  |  |  |  |  |
Settled (in shares) | shares |  | (191,238) | (190,310) |  |  |  |  |  |  |
Canceled/Forfeited (in shares) | shares |  | (15,156) | (40,880) |  |  |  |  |  |  |
Outstanding, Ending Balance (in shares) | shares |  | 1,046,605 | 1,065,341 |  | 1,046,605 |  |  |  |  |
Vested, Ending Balance (in shares) | shares |  | 444,490 |  |  | 444,490 |  |  |  |  |
Vested and Expected to Vest, Ending Balance (in shares) | shares |  | 1,009,648 |  |  | 1,009,648 |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Outstanding, Beginning Balance (in dollars per share) | $ / shares |  | $ 22.56 | $ 21.93 |  | $ 21.93 |  |  |  |  |
Granted (in dollars per share) | $ / shares |  | 23.35 | 26.81 |  |  |  |  |  |  |
Settled (in dollars per share) | $ / shares |  | 22.47 | 23.97 |  |  |  |  |  |  |
Canceled/Forfeited (in dollars per share) | $ / shares |  | 21.88 | 23.15 |  |  |  |  |  |  |
Outstanding, Ending Balance (in dollars per share) | $ / shares |  | 22.73 | $ 22.56 |  | 22.73 |  |  |  |  |
Vested, Ending Balance (in dollars per share) | $ / shares |  | 22.12 |  |  | 22.12 |  |  |  |  |
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares |  | $ 22.71 |  |  | $ 22.71 |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |  |  |  |  |
Outstanding, Ending Balance |  | $ 21,277,000 |  |  | $ 21,277,000 |  |  |  |  |
Vested, Ending Balance |  |  |  |  | 9,036,000 |  |  |  |  |
Vested and Expected to Vest, Ending Balance |  | 20,526,000 |  |  | 20,526,000 |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Total intrinsic value relating to fully vested stock-based awards converted during the period |  | $ 4,569,000 |  | $ 9,000 | $ 9,464,000 | $ 2,905,000 |  |  |  |
Performance shares | Employees | Granted since fiscal 2014 |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Performance period (in years) |  |  |  |  | 3 years |  |  |  |  |
RSUs and restricted stock | Employees |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 5 years |  |  |  |  |
Common stock, conversion ratio (in shares) |  | 1 |  |  | 1 |  |  |  |  |
RSUs and restricted stock | Non-Employee Director |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 5 years |  | 3 years |  |  |
Common stock, conversion ratio (in shares) |  |  |  |  |  |  |  |  | 1 |
RSUs and restricted stock | Non-Employee Director | Tranche One |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 1 month |  |  |  |  |
RSUs and restricted stock | Non-Employee Director | Tranche Two |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 11 months |  |  |  |  |
Share units |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Common stock, conversion ratio (in shares) |  |  |  |  |  |  |  |  |  | 1
Conversion period of vested share units | 1 year |  |  |  |  |  |  |  |  |
Number of units settled to date (in shares) | shares |  | 956,576 |  |  | 956,576 |  |  |  |  |
Dividend equivalents |  |  |  |  |  |  |  |  |  |
Dividend Equivalents [Abstract] |  |  |  |  |  |  |  |  |  |
Accrual of dividend equivalents, net of reversal ($0.10 per share) |  | $ (129,000) |  |  | $ (217,000) |  |  |  |  |
Paid during the period |  | 210,000 |  |  | 525,000 |  |  |  |  |
Carrying value at period end |  | $ 577,000 |  |  | $ 577,000 |  |  | $ 884,000 |  |
RSU | CEO |  |  |  |  |  |  |  |  |  |
Additional Disclosures |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |  |  |  |

X
- Definition Aggregate Intrinsic Value [Abstract] + References No definition available. + Details
Name: | cmtl_AggregateIntrinsicValueAbstract
Namespace Prefix: | cmtl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Stock, Conversion Ratio + References No definition available. + Details
Name: | cmtl_CommonStockConversionRatio
Namespace Prefix: | cmtl_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents period (in years) that the fully-vested share units will be convertible into common shares from grant date. + References No definition available. + Details
Name: | cmtl_ConversionPeriodofFullyVestedShareUnitsintoCommonSharesFromGrantDate
Namespace Prefix: | cmtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividend Equivalents [Abstract] + References No definition available. + Details
Name: | cmtl_DividendEquivalentsAbstract
Namespace Prefix: | cmtl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount represents income tax benefit or expense resulting from the settlement of stock-based awards during the period. + References No definition available. + Details
Name: | cmtl_IncomeTaxBenefitExpenseFromSettlementOfStockBasedAwards
Namespace Prefix: | cmtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period over which an employee is required to satisfy the performance condition in exchange for the share-based award, in 'PnYnMnDT' format. + References No definition available. + Details
Name: | cmtl_ShareBasedAwardsPerformancePeriod
Namespace Prefix: | cmtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the cumulative number of units for certain type of the stock-based awards that have been settled as of the reporting date. + References No definition available. + Details
Name: | cmtl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCumulativeNumberofUnitsSettledtoDate
Namespace Prefix: | cmtl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average fair value of equity-classified stock-based awards, excluding stock options, outstanding as of the balance sheet date. + References No definition available. + Details
Name: | cmtl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue
Namespace Prefix: | cmtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock options that were converted to common stock during the period. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConvertedtoCommonStockWeightedAverageGrantDateFairValue
Namespace Prefix: | cmtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value as of grant date for outstanding equity-based awards other than stock options that are fully vested or expected to vest at the reporting date. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedAndExpectedToVestWeightedAverageGrantDateFairValue
Namespace Prefix: | cmtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average fair value as of grant date for equity-classified stock-based awards other than stock options that are fully vested at the reporting period. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedWeightedAverageGrantDateFairValue
Namespace Prefix: | cmtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The aggregate intrinsic value of equity-classified stock-based awards, other than stock options, that are fully vested and expected to vest, as calculated by applying the fair value at the reporting date. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedandExpectedtoVestAggregateIntrinsicValue
Namespace Prefix: | cmtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of shares into which fully vested non-option equity instrument outstanding as of the balance sheet date can be currently converted under the plan. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardNonoptionEquityInstrumentsVested
Namespace Prefix: | cmtl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest non-option equity instruments outstanding can be converted under the plan. + References No definition available. + Details
Name: | cmtl_SharebasedCompensationArrangementbySharebasedPaymentAwardNonoptionEquityInstrumentsVestedandExpectedtoVestNumber
Namespace Prefix: | cmtl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted Average Grant Date Fair Value + References No definition available. + Details
Name: | cmtl_WeightedAverageGrantDateFairValueAbstract
Namespace Prefix: | cmtl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of paid and unpaid cash dividends declared for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_DividendsShareBasedCompensationCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19-26) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 + Details
Name: | us-gaap_Liabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfOrdinaryDividends
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of non-option equity instruments granted to participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=cmtl_PerformanceSharesRSUsRestrictedStockandShareUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=cmtl_EmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cmtl_PeriodOfStockBasedAwardsGrantedAxis=cmtl_GrantedSinceFiscal2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cmtl_RSUsAndRestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cmtl_ShareunitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cmtl_DividendEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |