The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

Name:	dei_LegalEntityAxis=cmss_SponsorMember
Namespace Prefix:
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Balance Type:
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Private Placements (Details Narrative) - USD ($)			12 Months Ended
Private Placements (Details Narrative) - USD ($)	Nov. 03, 2017	Oct. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Subsidiary, Sale of Stock [Line Items]
Proceeds from warrants issued				$ 5,277,260
Private Placement Warrants [Member]
Subsidiary, Sale of Stock [Line Items]
Number of unit issued (in shares)	52,726
Proceeds from warrants issued	$ 527,260
Units (in dollars per share)	$ 10.00
Private Placement Warrants [Member] \| Sponsor [Member]
Subsidiary, Sale of Stock [Line Items]
Number of unit issued (in shares)		475,000
Proceeds from warrants issued		$ 4,750,000
Units (in dollars per share)		$ 10.00