Increments of share price.

No definition available.

Name:	bcov_IncrementsOfSharePrice
Namespace Prefix:	bcov_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of consecutive trading day

+ References

No definition available.

+ Details

Name:	bcov_NumberOfConsecutiveTradingDay
Namespace Prefix:	bcov_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of award earned upon each of final two achievement tiers.

+ References

No definition available.

+ Details

Name:	bcov_PercentageOfAwardEarnedUponEachOfFinalTwoAchievementTiers
Namespace Prefix:	bcov_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of award earned upon each of first two achievement tiers.

+ References

No definition available.

+ Details

Name:	bcov_PercentageOfAwardEarnedUponEachOfFirstTwoAchievementTiers
Namespace Prefix:	bcov_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of award earned upon each of next four achievement tiers.

+ References

No definition available.

+ Details

Name:	bcov_PercentageOfAwardEarnedUponEachOfNextFourAchievementTiers
Namespace Prefix:	bcov_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of award vest upon achievement of stock price.

+ References

No definition available.

+ Details

Name:	bcov_PercentageOfAwardVestUponAchievementOfStockPrice
Namespace Prefix:	bcov_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of award vest upon earlier of one year anniversary of achievement.

+ References

No definition available.

+ Details

Name:	bcov_PercentageOfAwardVestUponEarlierOfOneYearAnniversaryOfAchievement
Namespace Prefix:	bcov_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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

- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made 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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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

- Details

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

- Details

Name:	us-gaap_PlanNameAxis=bcov_TwoThousandTwentyTwoInducementPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bcov_AwardTypeOneAxis=bcov_ServiceBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bcov_AwardTypeOneAxis=bcov_MarketBasedAndServiceBasedPerformanceStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
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:

Stock based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Mar. 28, 2022	Jun. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 39
Weighted average period		2 years 8 months 26 days
RSUs [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards, granted		3,255,385
RSUs [Member] \| 2022 Inducement Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	3 years
RSUs [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards, granted	800,000
RSUs [Member] \| Service Based Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards, granted		2,755,385
RSUs [Member] \| Service Based Restricted Stock Units [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards, granted	300,000
RSUs [Member] \| Market-Based and Service-Based Performance Stock Units [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards, granted	500,000
PSUs [Member] \| 2022 Inducement Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Percentage of award earned upon each of first two achievement tiers	10.00%
Percentage of award earned upon each of next four achievement tiers	12.50%
Percentage of award earned upon each of final two achievement tiers	15.00%
PSUs [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	4 years
Number of consecutive trading day	20 days
Increments of share price	$ 2.50
Percentage of award vest upon achievement of stock price	50.00%
Percentage of award vest upon earlier of one year anniversary of achievement	50.00%
PSUs [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Price	$ 12.50
PSUs [Member] \| 2022 Inducement Plan [Member] \| Chief Executive Officer [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Price	$ 30.00