Annual report pursuant to Section 13 and 15(d)

Segment Information, Significant Customers and Geographic Information - Long-Lived Assets by Geographic Locations (Detail)

v2.4.1.9
Segment Information, Significant Customers and Geographic Information - Long-Lived Assets by Geographic Locations (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2015
Jan. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 28,502us-gaap_NoncurrentAssets $ 33,272us-gaap_NoncurrentAssets
North America [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location 21,214us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember 		20,714us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Long-lived assets, Percentage 74.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember 		62.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe and Middle East [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location 6,028us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember 		11,097us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Long-lived assets, Percentage 22.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember 		33.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Asia Pacific [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 1,260us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember 		$ 1,461us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Long-lived assets, Percentage 4.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember 		5.00%seac_LongLivedAssetsByGeographicalLocationsPercentage
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember