GSE SYSTEMS INC, 10-K/A filed on 02 Apr 24
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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2023
Mar. 31, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description GSE Systems, Inc. (the “Company”) is filing this Amendment No. 1 (this “Amendment”) to its Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the Securities and Exchange Commission on April 2, 2024 (the “Original Report”), solely to correct a clerical error in the number of outstanding shares of the Company’s common stock at March 31, 2024 set forth on the cover page of the Original Report. The correct number of shares of the Company’s common stock outstanding at March 31, 2024 was 3,239,355 as set forth on the cover page of this Amendment. Except as described above, no changes have been made to the Original Report. This Amendment does not modify, amend or update any financial information in the Original Report. This Amendment continues to speak as of the date of the Original Report, and the Company has not updated the disclosures contained therein to reflect any events that occurred at a date subsequent to the Original Report.    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Document Transition Report false    
Entity File Number 001-14785    
Entity Registrant Name GSE Systems, Inc.    
Entity Central Index Key 0000944480    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 52-1868008    
Entity Address, Address Line One 6940 Columbia Gateway Dr.    
Entity Address, Address Line Two Suite 470    
Entity Address, City or Town Columbia    
Entity Address, State or Province MD    
Entity Address, Postal Zip Code 21046    
City Area Code 410    
Local Phone Number 970-7800    
Title of 12(b) Security Common Stock, $0.01 Par Value    
Trading Symbol GVP    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 8,928,827
Entity Common Stock, Shares Outstanding   3,239,355  
Auditor Firm ID 686    
Auditor Name FORVIS, LLP    
Auditor Location Tysons, VA