Regulatory Capital (Tables)

9 Months Ended

Sep. 30, 2023

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 September 30, 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	$	365,058	11.20	%	$	260,796	8.00	%	$	342,295	10.50	%	N/A		N/A
First Business Bank	365,705		11.22		260,850		8.00		342,366		10.50		$	326,063	10.00	%
Tier 1 capital (to risk-weighted assets)
Consolidated	$	284,974	8.74	%	$	195,597	6.00	%	$	277,096	8.50	%	N/A		N/A
First Business Bank	335,012		10.27		195,638		6.00		277,154		8.50		$	260,850	8.00	%
Common equity tier 1 capital (to risk-weighted assets)
Consolidated	$	272,982	8.37	%	$	146,698	4.50	%	$	228,197	7.00	%	N/A		N/A
First Business Bank	335,012		10.27		146,728		4.50		228,244		7.00		$	211,941	6.50	%
Tier 1 leverage capital (to adjusted assets)
Consolidated	$	284,974	8.65	%	$	131,840	4.00	%	$	131,840	4.00	%	N/A		N/A
First Business Bank	335,012		10.16		131,845		4.00		131,845		4.00		$	164,807	5.00	%

(1)2023 capital amounts include $1.0 million of additional stockholders’ equity as elected by the Corporation and permitted by federal banking regulatory agencies. Risk-weighted assets were also adjusted accordingly.


	As of December 31, 2022
	Actual				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	$	323,893	11.26	%	$	230,180	8.00	%	$	302,111	10.50	%	N/A		N/A
First Business Bank	323,021		11.22		230,367		8.00		302,357		10.50		$	287,959	10.00	%
Tier 1 capital (to risk-weighted assets)
Consolidated	$	264,843	9.20	%	$	172,635	6.00	%	$	244,566	8.50	%	N/A		N/A
First Business Bank	298,312		10.36		172,775		6.00		244,765		8.50		$	230,367	8.00	%
Common equity tier 1 capital (to risk-weighted assets)
Consolidated	$	252,851	8.79	%	$	129,476	4.50	%	$	201,407	7.00	%	N/A		N/A
First Business Bank	298,312		10.36		129,581		4.50		201,571		7.00		$	187,173	6.50	%
Tier 1 leverage capital (to adjusted assets)
Consolidated	$	264,843	9.17	%	$	115,464	4.00	%	$	115,464	4.00	%	N/A		N/A
First Business Bank	298,312		10.34		115,402		4.00		115,402		4.00		$	144,252	5.00	%