v3.19.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Jul. 22, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Trading Symbol usap  
Entity Registrant Name UNIVERSAL STAINLESS & ALLOY PRODUCTS INC  
Entity Central Index Key 0000931584  
Entity Current Reporting Status Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   8,787,837
Entity Shell Company false  
Entity File Number 000-25032  
Entity Tax Identification Number 251724540  
Entity Address, Address Line One 600 Mayer Street  
Entity Address, City or Town Bridgeville  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 15017  
City Area Code 412  
Local Phone Number 257-7600