Quarterly report pursuant to Section 13 or 15(d)

Stock Incentive Plans - Additional Information (Detail)

v2.4.1.9
Stock Incentive Plans - Additional Information (Detail) (USD $)
3 Months Ended 0 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Oct. 20, 2014
Jul. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, Description Option awards may be granted to employees at an exercise price per share of not less than 100% of the fair market value per common share on the date of the grant.      
Share-based compensation arrangement by Share-based payment award, Option award vesting period 3 years      
Share-based compensation arrangement by share based payment award, Option award expiration period 10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent 100.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent      
Stock-based compensation expense $ 711,000us-gaap_ShareBasedCompensation $ 596,000us-gaap_ShareBasedCompensation    
CEO [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares, Granted     500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value     1,700,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock-based compensation expense     $ 500,000us-gaap_ShareBasedCompensation
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock Compensation Plan [Member] | Compensation and Incentive Plan 2011 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, number of shares authorized       5,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember
/ us-gaap_PlanNameAxis
= seac_CompensationAndIncentivePlan2011Member