Regulatory Capital (Tables)

6 Months Ended

Jun. 30, 2012

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table summarizes the Corporation’s and Banks’ capital ratios and the ratios required by their federal regulators at June 30, 2012 and December 31, 2011, respectively:

	Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements
	Amount		Ratio		Amount		Ratio		Amount		Ratio
	(Dollars in Thousands)
As of June 30, 2012
Total capital
(to risk-weighted assets)
Consolidated	$	124,856	13.31	%	$	75,083	8.00	%	N/A		N/A
First Business Bank	114,287		13.65		66,983		8.00		$	83,872	10.00	%
First Business Bank — Milwaukee	15,315		15.19		8,065		8.00		10,082		10.00
Tier 1 capital
(to risk-weighted assets)
Consolidated	$	75,393	8.04	%	$	37,541	4.00	%	N/A		N/A
First Business Bank	103,790		12.40		33,492		4.00		$	50,323	6.00	%
First Business Bank — Milwaukee	14,051		13.94		4,033		4.00		6,049		6.00
Tier 1 capital
(to average assets)
Consolidated	$	75,393	6.55	%	$	46,074	4.00	%	N/A		N/A
First Business Bank	103,790		10.90		38,084		4.00		$	47,605	5.00	%
First Business Bank — Milwaukee	14,051		6.75		8,325		4.00		10,406		5.00

	Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements
	Amount		Ratio		Amount		Ratio		Amount		Ratio
	(Dollars in Thousands)
As of December 31, 2011
Total capital
(to risk-weighted assets)
Consolidated	$	118,895	13.11	%	$	72,559	8.00	%	N/A		N/A
First Business Bank	108,860		13.39		65,058		8.00		$	81,322	10.00	%
First Business Bank — Milwaukee	15,074		16.11		7,484		8.00		9,355		10.00
Tier 1 capital
(to risk-weighted assets)
Consolidated	$	71,723	7.91		$	36,279	4.00	%	N/A		N/A
First Business Bank	98,666		12.13		32,529		4.00		$	48,793	6.00	%
First Business Bank — Milwaukee	13,898		14.86		3,742		4.00		5,613		6.00
Tier 1 capital
(to average assets)
Consolidated	$	71,723	6.22		$	46,152	4.00	%	N/A		N/A
First Business Bank	98,666		9.98		39,556		4.00		$	49,445	5.00	%
First Business Bank — Milwaukee	13,898		7.95		6,993		4.00		8,741		5.00