Annual report pursuant to Section 13 and 15(d)

Discontinued Operations - Summary of Selected Financial Information of Business Units (Detail)

v2.4.1.9
Discontinued Operations - Summary of Selected Financial Information of Business Units (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2013
Revenues:      
Total revenues   $ 46us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue $ 11,181us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Income (loss) from discontinued operations:      
Loss from discontinued operations, before tax   (803)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax (2,048)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Income tax provision (benefit)     71us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income in investment in affiliates     (174)seac_DiscontinuedOperationLossFromInvestmentInAffiliates
Loss from discontinued operations, after tax 5us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (803)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (2,293)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Products [Member]      
Revenues:      
Total revenues   46us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
1,031us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
Services [Member]      
Revenues:      
Total revenues     10,150us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_ProductOrServiceAxis
= seac_ServiceMember
Servers and Storage [Member]      
Revenues:      
Total revenues   46us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
1,866us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
Income (loss) from discontinued operations:      
Loss from discontinued operations, before tax   (803)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
(1,854)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
Income tax provision (benefit)     84us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
Loss from discontinued operations, after tax   (803)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
(1,938)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
Servers and Storage [Member] | Products [Member]      
Revenues:      
Total revenues   46us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
1,031us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_ProductMember
Servers and Storage [Member] | Services [Member]      
Revenues:      
Total revenues     835us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_ServersAndStorageMember
/ us-gaap_ProductOrServiceAxis
= seac_ServiceMember
Media Services [Member]      
Revenues:      
Total revenues     9,315us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
Income (loss) from discontinued operations:      
Loss from discontinued operations, before tax     (194)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
Income tax provision (benefit)     (13)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
Income in investment in affiliates     (174)seac_DiscontinuedOperationLossFromInvestmentInAffiliates
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
Loss from discontinued operations, after tax     (355)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
Media Services [Member] | Services [Member]      
Revenues:      
Total revenues     $ 9,315us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= seac_MediaServicesMember
/ us-gaap_ProductOrServiceAxis
= seac_ServiceMember