XML 12 R1.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2024
Apr. 30, 2024
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2024  
Entity File Number 001-38412  
Entity Registrant Name BRIDGEWATER BANCSHARES, INC.  
Entity Incorporation, State or Country Code MN  
Entity Tax Identification Number 26-0113412  
Entity Address, Address Line One 4450 Excelsior Boulevard, Suite 100  
Entity Address, City or Town St. Louis Park  
Entity Address, State or Province MN  
Entity Address, Postal Zip Code 55416  
City Area Code 952  
Local Phone Number 893-6868  
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   27,373,972
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0001341317  
Amendment Flag false  
Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Common Stock  
Trading Symbol BWB  
Security Exchange Name NASDAQ  
Depositary Shares    
Document Information [Line Items]    
Title of 12(b) Security Depositary Shares  
Trading Symbol BWBBP  
Security Exchange Name NASDAQ