Stockholders' Equity and Regulatory Capital (Tables)

12 Months Ended

Dec. 31, 2015

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 December 31, 2015 and 2014, 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 December 31, 2015
Total capital (to risk-weighted assets)
Consolidated	$	189,163	11.11	%	$	136,208	8.00	%	N/A		N/A
First Business Bank	141,388		11.12		101,754		8.00		$	127,193	10.00	%
First Business Bank – Milwaukee	20,931		12.03		13,914		8.00		17,392		10.00
Alterra Bank	30,300		11.39		21,279		8.00		26,598		10.00
Tier 1 capital (to risk-weighted assets)
Consolidated	$	149,920	8.81		$	102,156	6.00		N/A		N/A
First Business Bank	128,852		10.13		76,316		6.00		$	101,754	8.00
First Business Bank – Milwaukee	19,172		11.02		10,435		6.00		13,914		8.00
Alterra Bank	28,278		10.63		15,959		6.00		21,279		8.00
Common equity tier 1 capital (to risk-weighted assets)
Consolidated	$	139,920	8.22		$	76,617	4.50		N/A		N/A
First Business Bank	128,852		10.13		57,237		4.50		$	110,669	6.50
First Business Bank — Milwaukee	19,172		11.02		7,826		4.50		82,675		6.50
Alterra Bank	28,278		10.63		11,969		4.50		11,305		6.50
Tier 1 capital (to average assets)
Consolidated	$	149,920	8.63		$	69,466	4.00		N/A		N/A
First Business Bank	128,852		10.44		49,359		4.00		$	61,698	5.00
First Business Bank – Milwaukee	19,172		7.81		9,821		4.00		12,276		5.00
Alterra Bank	28,278		9.89		11,441		4.00		14,301		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, 2014
Total capital (to risk-weighted assets)
Consolidated	$	173,263	12.13	%	$	114,253	8.00	%	N/A		N/A
First Business Bank	131,411		12.19		86,272		8.00		$	107,841	10.00	%
First Business Bank – Milwaukee	19,128		12.47		12,274		8.00		15,343		10.00
Tier 1 capital (to risk-weighted assets)
Consolidated	$	136,008	9.52		$	57,127	4.00		N/A		N/A
First Business Bank	118,907		11.03		43,136		4.00		$	64,704	6.00
First Business Bank – Milwaukee	17,641		11.50		6,137		4.00		9,206		6.00
Tier 1 capital (to average assets)
Consolidated	$	136,008	8.71		$	62,490	4.00		N/A		N/A
First Business Bank	118,907		10.13		46,960		4.00		$	58,700	5.00
First Business Bank – Milwaukee	17,641		7.90		8,935		4.00		11,169		5.00

Reconciliation of stockholders' equity to federal regulatory capital

The following table reconciles stockholders’ equity to federal regulatory capital at December 31, 2015 and 2014, respectively.



	As of December 31,
	2015			2014
	(In Thousands)
Stockholders’ equity of the Corporation	$	150,832		$	137,748
Unrealized and accumulated (gains) losses on specific items	80			(652		)
Disallowed servicing assets and purchased credit card relationships	(370		)	(94		)
Disallowed goodwill and other intangibles	(10,622		)	(10,994		)
Trust preferred securities	10,000			10,000
Tier 1 capital	149,920			136,008
Allowable general valuation allowances and subordinated debt	39,243			37,255
Risk-based capital	$	189,163		$	173,263