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Regulatory Capital (Tables) | 3 Months Ended
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Mar. 31, 2021
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, 2021
|  | 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 |  | $ | 267,291 |  |  | 11.52 | % |  | $ | 185,682 |  |  | 8.00 | % |  | $ | 243,708 |  |  | 10.50 | % |  | N/A |  | N/A
First Business Bank |  | 260,529 |  |  | 11.24 |  |  | 185,412 |  |  | 8.00 |  |  | 243,354 |  |  | 10.50 |  |  | 231,765 |  |  | 10.00 | %
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 214,510 |  |  | 9.24 | % |  | $ | 139,262 |  |  | 6.00 | % |  | $ | 197,288 |  |  | 8.50 | % |  | N/A |  | N/A
First Business Bank |  | 231,547 |  |  | 9.99 |  |  | 139,059 |  |  | 6.00 |  |  | 197,001 |  |  | 8.50 |  |  | 185,412 |  |  | 8.00 |
Common equity tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 204,445 |  |  | 8.81 | % |  | $ | 104,446 |  |  | 4.50 | % |  | $ | 162,472 |  |  | 7.00 | % |  | N/A |  | N/A
First Business Bank |  | 231,547 |  |  | 9.99 |  |  | 104,294 |  |  | 4.50 |  |  | 162,236 |  |  | 7.00 |  |  | 150,648 |  |  | 6.50 |
Tier 1 leverage capital (to adjusted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 214,510 |  |  | 8.37 | % |  | $ | 102,499 |  |  | 4.00 | % |  | $ | 102,499 |  |  | 4.00 | % |  | N/A |  | N/A
First Business Bank |  | 231,547 |  |  | 9.08 |  |  | 102,027 |  |  | 4.00 |  |  | 102,027 |  |  | 4.00 |  |  | 127,534 |  |  | 5.00 |
|  | As of December 31, 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 |  | $ | 258,607 |  |  | 11.25 | % |  | $ | 183,965 |  |  | 8.00 | % |  | $ | 241,454 |  |  | 10.50 | % |  | N/A |  | N/A
First Business Bank |  | 251,116 |  |  | 10.97 |  |  | 183,053 |  |  | 8.00 |  |  | 240,257 |  |  | 10.50 |  |  | 228,816 |  |  | 10.00 | %
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 206,104 |  |  | 8.96 | % |  | $ | 137,974 |  |  | 6.00 | % |  | $ | 195,463 |  |  | 8.50 | % |  | N/A |  | N/A
First Business Bank |  | 222,500 |  |  | 9.72 |  |  | 137,290 |  |  | 6.00 |  |  | 194,494 |  |  | 8.50 |  |  | 183,053 |  |  | 8.00 |
Common equity tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 196,042 |  |  | 8.53 | % |  | $ | 103,480 |  |  | 4.50 | % |  | $ | 160,970 |  |  | 7.00 | % |  | N/A |  | N/A
First Business Bank |  | 222,500 |  |  | 9.72 |  |  | 102,967 |  |  | 4.50 |  |  | 160,171 |  |  | 7.00 |  |  | 148,731 |  |  | 6.50 |
Tier 1 leverage capital (to adjusted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 206,104 |  |  | 7.99 | % |  | $ | 103,228 |  |  | 4.00 | % |  | $ | 103,228 |  |  | 4.00 | % |  | N/A |  | N/A
First Business Bank |  | 222,500 |  |  | 8.67 |  |  | 102,635 |  |  | 4.00 |  |  | 102,635 |  |  | 4.00 |  |  | 128,294 |  |  | 5.00 |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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