SeaChange International, Inc. Quarterly report pursuant to Section 13 or 15(d)

Acquisition of TLL, LIC - Components of Identified Intangible Assets Associated with Timeline Labs Acquisition and their Estimated Useful Lives (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Feb. 02, 2015	Apr. 30, 2015	Feb. 02, 2015
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, Fair Value	$ 6,720		$ 6,720
Tradename [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, Useful life	7 years
Identified intangible assets, Fair Value	620		620
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, Useful life	7 years	6 years 3 months 18 days
Identified intangible assets, Fair Value	4,760		4,760
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, Useful life	2 years	2 years
Identified intangible assets, Fair Value	170		170
Existing Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Identified intangible assets, Useful life	5 years
Identified intangible assets, Fair Value	$ 1,170		$ 1,170