XML 11 R1.htm IDEA: XBRL DOCUMENT v3.23.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2023
May 05, 2023
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2023  
Document Transition Report false  
Entity File Number 0-23320  
Entity Registrant Name OLYMPIC STEEL, INC.  
Entity Incorporation, State or Country Code OH  
Entity Tax Identification Number 34-1245650  
Entity Address, Address Line One 22901 Millcreek Boulevard, Suite 650  
Entity Address, City or Town Highland Hills  
Entity Address, State or Province OH  
Entity Address, Postal Zip Code 44122  
City Area Code 216  
Local Phone Number 292-3800  
Title of 12(b) Security Common stock, without par value  
Trading Symbol ZEUS  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   11,132,542
Entity Central Index Key 0000917470  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Amendment Flag false