Leases (Details) - USD ($) $ in Thousands		3 Months Ended
Feb. 01, 2022	Mar. 31, 2022
Leases [Abstract]
Lease agreement	10 years
Monthly rent		$ 98,300
Annual rent		128,200
Security deposit		1,000
Operating lease liability		$ 10,100

No definition available.

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- Definition

An agreement, usually written, between the lessor and the lessee, which allows for the conveyance of property to the tenant under a contract, and confers usage and control rights to the tenant for the duration of lease.

+ References

No definition available.

+ Details

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Namespace Prefix:	coms_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Balance Type:	na
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- References

No definition available.

+ Details

Name:	coms_MonthlyRent
Namespace Prefix:	coms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant