Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Jan. 31, 2020
Apr. 06, 2020
Jul. 31, 2019
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jan. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Trading Symbol SEAC    
Security Exchange Name NASDAQ    
Entity Central Index Key 0001019671    
Current Fiscal Year End Date --01-31    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   37,208,434  
Entity Public Float     $ 60,364,119
Title of 12(b) Security Common Stock, $0.01 par value    
Entity File Number 001-38828    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Tax Identification Number 04-3197974    
Entity Address, Address Line One 500 Totten Pond Road    
Entity Address, City or Town Waltham    
Entity Address, State or Province MA    
Entity Incorporation, State or Country Code DE    
Entity Address, Postal Zip Code 02451    
City Area Code (978)    
Local Phone Number 897-0100    
Document Transition Report false    
Documents Incorporated by Reference

Portions of the registrant’s definitive proxy statement for the 2020 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein.

Document Annual Report true    
Series A Preferred Stock [Member]      
Document Information [Line Items]      
Trading Symbol SEAC    
Security Exchange Name NASDAQ    
Title of 12(b) Security Series A Participating Preferred Stock Purchase Rights