Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 08, 2013	May 30, 2008
Accounting Policies [Line Items]
Payments to acquire non-managing interest		$ 1,084,000
Restricted cash	201,000	322,000
Threshold percentage of total revenues required for major customer classification	10.00%
Capitalized software development costs	474,000	1,065,000	24,000
Amortization of capitalized internal-use software development costs	397,000	312,000	542,000
Number of stock-based compensation plans	4
Depreciation and amortization, expense	5,388,000	4,148,000	4,022,000
Expected dividend yield	0
Estimated forfeiture rate	17.00%	15.00%	14.00%
Weighted-average fair value of options granted	$ 4.21	$ 5.34	$ 7.74
Unrecognized stock-based compensation expense	11,725,000
Unrecognized compensation cost, recognition period	3 years 1 month 20 days
Stock-based compensation	6,387,000	6,401,000	5,843,000
Advertising costs	3,515,000	3,215,000	3,881,000
Brightcove KK [Member]
Accounting Policies [Line Items]
Minority ownership interest percentage		37.00%			37.00%
Ownership percentage				100.00%	63.00%
Joint venture, additional ownership interest acquired				37.00%
Payments to acquire non-managing interest				$ 1,100,000
Software [Member]
Accounting Policies [Line Items]
Estimated Useful Life (in Years)	3 years