Represents the parentage OF Volume Weighted Average Price for calculating the conversion price.

No definition available.

Name:	cntm_DebtInstrumentConvertibleDenominatorForCalculatingConversionPricePercentageOfVolumeWeightedAveragePrice
Namespace Prefix:	cntm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the optional conversion period for notes payable.

+ References

No definition available.

+ Details

Name:	cntm_DebtInstrumentConvertibleOptionalConversionTerm
Namespace Prefix:	cntm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of lenders.

+ References

No definition available.

+ Details

Name:	cntm_NumberOfLenders
Namespace Prefix:	cntm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of note exchange agreements.

+ References

No definition available.

+ Details

Name:	cntm_NumberOfNoteExchangeAgreements
Namespace Prefix:	cntm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-5

+ Details

Name:	us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

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-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-5

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

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-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cntm_Q12025ConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cntm_Q22025ConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=cntm_Q32025ConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUBSEQUENT EVENTS - Convertible note agreement issuances (Details)	1 Months Ended		3 Months Ended
	Jul. 31, 2025 USD ($) D $ / shares	Apr. 30, 2025 item	Jun. 30, 2025 USD ($) item agreement Lender $ / shares	Mar. 31, 2025 USD ($) Lender $ / shares	Dec. 31, 2024 $ / shares
SUBSEQUENT EVENTS
Debt instrument convertible conversion price					$ 1
Subsequent events
SUBSEQUENT EVENTS
Number of note exchange agreements \| item		25
Subsequent events \| Q1 2025 Convertible Notes
SUBSEQUENT EVENTS
Proceeds from the issuance of convertible notes \| $				$ 2,530,000
Number of lenders \| Lender				11
Interest rate (in percent)				20.00%
Maturity Date (from issuance date)				40 days
Convertible debt amount \| $				$ 500,000
Subsequent events \| Q1 2025 Convertible Notes \| Minimum
SUBSEQUENT EVENTS
Optional conversion period				30 days
Debt instrument convertible conversion price				$ 1
Subsequent events \| Q1 2025 Convertible Notes \| Maximum
SUBSEQUENT EVENTS
Optional conversion period				90 days
Debt instrument convertible conversion price				$ 1.15
Subsequent events \| Q2 2025 Convertible Notes
SUBSEQUENT EVENTS
Number of note exchange agreements \| agreement			6
Proceeds from the issuance of convertible notes \| $			$ 1,026,000
Number of lenders \| Lender			6
Interest rate (in percent)			20.00%
Maturity Date (from issuance date)			210 days
Debt instrument convertible conversion price			$ 0.25
Denominator for calculation conversion price			90.00%
Number of trading volume days prior to requesting an Advance (in days) \| item			3
Subsequent events \| Q2 2025 Convertible Notes \| Minimum
SUBSEQUENT EVENTS
Optional conversion period			30 days
Debt instrument convertible conversion price			$ 0.6
Subsequent events \| Q2 2025 Convertible Notes \| Maximum
SUBSEQUENT EVENTS
Optional conversion period			180 days
Debt instrument convertible conversion price			$ 1.15
Subsequent events \| Q3 2025 Convertible Notes
SUBSEQUENT EVENTS
Proceeds from the issuance of convertible notes \| $	$ 500,000
Interest rate (in percent)	20.00%
Maturity Date (from issuance date)	210 days
Debt instrument convertible conversion price	$ 0.25
Denominator for calculation conversion price	90.00%
Number of trading volume days prior to requesting an Advance (in days) \| D	3