Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
6 Months Ended
Jul. 31, 2019
Aug. 23, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 31, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Trading Symbol SEAC  
Entity Central Index Key 0001019671  
Current Fiscal Year End Date --01-31  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   36,683,245
Entity File Number 001-38828  
Entity Tax Identification Number 043197974  
Entity Address, Address Line One 50 Nagog Park  
Entity Address, City or Town Acton  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01720  
City Area Code 978  
Local Phone Number 897-0100