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Regulatory Capital (Tables)

3 Months Ended

Mar. 31, 2024

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following tables summarize both the Corporation’s and the Bank’s capital ratios and the ratios required by their federal regulators:


						As of March 31, 2024
						Actual (1)												Minimum Required for Capital Adequacy Purposes												For Capital Adequacy Purposes Plus Capital Conservation Buffer												Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements
						Amount						Ratio						Amount						Ratio						Amount						Ratio						Amount						Ratio
						(Dollars in Thousands)
Total capital (to risk-weighted assets)
Consolidated						$	384,083					11.36		%				$	270,485					8.00		%				$	355,011					10.50		%				N/A						N/A
First Business Bank						384,542						11.37						270,553						8.00						355,101						10.50						$	338,191					10.00		%
Tier 1 capital (to risk-weighted assets)
Consolidated						$	299,707					8.86		%				$	202,864					6.00		%				$	287,390					8.50		%				N/A						N/A
First Business Bank						349,624						10.34						202,915						6.00						287,462						8.50						$	270,553					8.00		%
Common equity tier 1 capital (to risk-weighted assets)
Consolidated						$	287,715					8.51		%				$	152,148					4.50		%				$	236,674					7.00		%				N/A						N/A
First Business Bank						349,624						10.34						152,186						4.50						236,734						7.00						$	219,824					6.50		%
Tier 1 leverage capital (to adjusted assets)
Consolidated						$	299,707					8.45		%				$	141,847					4.00		%				$	141,847					4.00		%				N/A						N/A
First Business Bank						349,624						9.86						141,889						4.00						141,889						4.00						$	177,361					5.00		%


						As of December 31, 2023
						Actual (1)												Minimum Required for Capital Adequacy Purposes												For Capital Adequacy Purposes Plus Capital Conservation Buffer												Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements
						Amount						Ratio						Amount						Ratio						Amount						Ratio						Amount						Ratio
						(Dollars in Thousands)
Total capital (to risk-weighted assets)
Consolidated						$	375,440					11.19		%				$	268,500					8.00		%				$	352,406					10.50		%				N/A						N/A
First Business Bank						376,310						11.21						268,595						8.00						352,531						10.50						$	335,744					10.00		%
Tier 1 capital (to risk-weighted assets)
Consolidated						$	293,338					8.74		%				$	201,375					6.00		%				$	285,281					8.50		%				N/A						N/A
First Business Bank						343,604						10.23						201,446						6.00						285,382						8.50						$	268,595					8.00		%
Common equity tier 1 capital (to risk-weighted assets)
Consolidated						$	281,346					8.38		%				$	151,031					4.50		%				$	234,937					7.00		%				N/A						N/A
First Business Bank						343,604						10.23						151,085						4.50						235,021						7.00						$	218,233					6.50		%
Tier 1 leverage capital (to adjusted assets)
Consolidated						$	293,338					8.43		%				$	139,145					4.00		%				$	139,145					4.00		%				N/A						N/A
First Business Bank						343,604						9.87						139,262						4.00						139,262						4.00						$	174,077					5.00		%