v3.19.3
Document - shares
9 Months Ended
Sep. 30, 2019
Oct. 23, 2019
Cover page.    
Document type 10-Q  
Document quarterly report true  
Document period end date Sep. 30, 2019  
Document transition report false  
Entity file number 000-50600  
Entity registrant name Blackbaud, Inc.  
Entity incorporation, state or country code DE  
Entity tax identification number 11-2617163  
Entity address, address line one 65 Fairchild Street  
Entity address, city Charleston  
Entity address, state SC  
Entity address, postal zip code 29492  
City area code 843  
Local phone number 216-6200  
Title of 12(b) security Common Stock, $0.001 Par Value  
Trading symbol BLKB  
Security exchange name NASDAQ  
Entity current reporting status Yes  
Entity interactive data current Yes  
Entity filer category Large Accelerated Filer  
Entity small business false  
Entity emerging growth company false  
Entity shell company false  
Entity common stock, shares outstanding   49,186,476
Amendment flag false  
Document fiscal year focus 2019  
Document fiscal period focus Q3  
Entity central index key 0001280058  
Current fiscal year end date --12-31