XML 35 R44.htm IDEA: XBRL DOCUMENT v3.20.1

Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 16, 2018	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)		70,206,917		70,065,130
Investor | WPP
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)		11,319,363
Ownership percentage common stock outstanding shares		16.10%
Investor | Starboard Value LP
Related Party Transaction [Line Items]
Interest expense		$ 8.2	$ 6.7
Affiliated entity | Lightspeed
Related Party Transaction [Line Items]
Purchase commitment term		5 years
Annual purchase obligation		$ 5.0
Beneficial owner | Starboard Value LP
Related Party Transaction [Line Items]
Ownership percentage common stock outstanding shares	5.00%

X

- Definition

Annual Purchase Obligation

+ References

No definition available.

+ Details

Name:	scor_AnnualPurchaseObligation
Namespace Prefix:	scor_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Common Stock, Percentage of Shares Outstanding Owned

+ References

No definition available.

+ Details

Name:	scor_CommonStockPercentageofSharesOutstandingOwned
Namespace Prefix:	scor_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest Income (Expense), Net, Related Parties

+ References

No definition available.

+ Details

Name:	scor_InterestIncomeExpenseNetRelatedParties
Namespace Prefix:	scor_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Period covered by the long-term purchase commitment, 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_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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

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

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_InvestorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=scor_WPPplcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=scor_StarboardValueLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=scor_LightspeedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_BeneficialOwnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: