Concentration of Credit Risk - Additional Information (Detail)	3 Months Ended
Mar. 31, 2013 Customer	Mar. 31, 2012 Customer	Dec. 31, 2012
Risks And Uncertainties [Abstract]
Net accounts receivable	10.00%		10.00%
Total revenue	10.00%	10.00%
Number of individual customer net accounts receivable	0	0

Percentage of net accounts receivable for identifying major customers.

No definition available.

Name:	bcov_PercentageOfNetAccountsReceivableForIdentifyingMajorCustomers
Namespace Prefix:	bcov_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant