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Regulatory Capital (Tables)
 6 Months Ended
Jun. 30, 2020
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 June 30, 2020
 
 
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
 
$
247,276

 
11.97
%
 
$
165,275

 
8.00
%
 
$
216,924

 
10.50
%
 
N/A

 
N/A

First Business Bank
 
238,138

 
11.60

 
164,225

 
8.00

 
215,545

 
10.50

 
205,281

 
10.00
%
Tier 1 capital
(to risk-weighted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
197,692

 
9.57
%
 
$
123,956

 
6.00
%
 
$
175,605

 
8.50
%
 
N/A

 
N/A

First Business Bank
 
212,443

 
10.35

 
123,169

 
6.00

 
174,489

 
8.50

 
164,225

 
8.00

Common equity tier 1 capital
(to risk-weighted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
187,638

 
9.08
%
 
$
92,967

 
4.50
%
 
$
144,616

 
7.00
%
 
N/A

 
N/A

First Business Bank
 
212,443

 
10.35

 
92,376

 
4.50

 
143,697

 
7.00

 
133,433

 
6.50

Tier 1 leverage capital
(to adjusted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
197,692

 
8.29
%
 
$
95,431

 
4.00
%
 
$
95,431

 
4.00
%
 
N/A

 
N/A

First Business Bank
 
212,443

 
8.96

 
94,856

 
4.00

 
94,856

 
4.00

 
118,570

 
5.00


 
 
As of December 31, 2019
 
 
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
 
$
239,029

 
12.01
%
 
$
159,185

 
8.00
%
 
$
208,930

 
10.50
%
 
N/A

 
N/A

First Business Bank
 
233,181

 
11.79

 
158,177

 
8.00

 
207,607

 
10.50

 
197,721

 
10.00
%
Tier 1 capital
(to risk-weighted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
194,456

 
9.77
%
 
$
119,388

 
6.00
%
 
$
169,134

 
8.50
%
 
N/A

 
N/A

First Business Bank
 
212,315

 
10.74

 
118,633

 
6.00

 
168,063

 
8.50

 
158,177

 
8.00

Common equity tier 1 capital
(to risk-weighted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
184,409

 
9.27
%
 
$
89,541

 
4.50
%
 
$
139,286

 
7.00
%
 
N/A

 
N/A

First Business Bank
 
212,315

 
10.74

 
88,974

 
4.50

 
138,405

 
7.00

 
128,519

 
6.50

Tier 1 leverage capital
(to adjusted assets)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
 
$
194,456

 
9.27
%
 
$
83,950

 
4.00
%
 
$
83,950

 
4.00
%
 
N/A

 
N/A

First Business Bank
 
212,315

 
10.18

 
83,414

 
4.00

 
83,414

 
4.00

 
104,268

 
5.00