SeaChange International, Inc. Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheet Detail - Property and Equipment, Net (Detail)

Consolidated Balance Sheet Detail - Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 35,880us-gaap_PropertyPlantAndEquipmentGross	$ 35,728us-gaap_PropertyPlantAndEquipmentGross
Less-Accumulated depreciation and amortization	(20,011)	(17,198)
Total property and equipment, net	15,869us-gaap_PropertyPlantAndEquipmentNet	18,530us-gaap_PropertyPlantAndEquipmentNet
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,880	2,880
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	20
Property, Plant and Equipment, Gross	12,146	12,081
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	5
Property, Plant and Equipment, Gross	1,023	998
Computer Equipment, Software and Demonstration Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	3
Property, Plant and Equipment, Gross	17,584	17,466
Service and Spare Components [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	5
Property, Plant and Equipment, Gross	1,158	1,158
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,089	$ 1,145
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	1
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	7