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Document and Entity Information
Mar. 02, 2022
Details  
Registrant CIK 0001521951
Fiscal Year End --12-31
Document Type 8-K
Document Period End Date Mar. 02, 2022
Entity Registrant Name First Business Financial Services, Inc.
Entity Incorporation, State or Country Code WI
Entity File Number 1-34095
Entity Tax Identification Number 39-1576570
Entity Address, Address Line One 401 Charmany Drive
Entity Address, City or Town Madison
Entity Address, State or Province WI
Entity Address, Postal Zip Code 53719
City Area Code 608
Local Phone Number 238-8008
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol FBIZ
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Flag false
Document Fiscal Year Focus 2022
Document Fiscal Period Focus FY