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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Schedule of actual and required capital amounts and ratios | The following table shows the actual and required capital amounts and ratios for 1st Source Corporation and 1st Source Bank as of December 31, 2021 and 2020.
|  | Actual |  | Minimum Capital Adequacy |  | Minimum Capital Adequacy with Capital Buffer |  | To Be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in thousands) |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | $ | 1,034,605 |  |  | 16.76 | % |  | $ | 493,751 |  |  | 8.00 | % |  | $ | 648,048 |  |  | 10.50 | % |  | $ | 617,189 |  |  | 10.00 | %
1st Source Bank |  | 969,228 |  |  | 15.71 |  |  | 493,412 |  |  | 8.00 |  |  | 647,603 |  |  | 10.50 |  |  | 616,765 |  |  | 10.00 |
Tier 1 Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 956,783 |  |  | 15.50 |  |  | 370,313 |  |  | 6.00 |  |  | 524,611 |  |  | 8.50 |  |  | 493,751 |  |  | 8.00 |
1st Source Bank |  | 891,458 |  |  | 14.45 |  |  | 370,059 |  |  | 6.00 |  |  | 524,250 |  |  | 8.50 |  |  | 493,412 |  |  | 8.00 |
Common Equity Tier 1 Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 846,573 |  |  | 13.72 |  |  | 277,735 |  |  | 4.50 |  |  | 432,032 |  |  | 7.00 |  |  | 401,173 |  |  | 6.50 |
1st Source Bank |  | 838,248 |  |  | 13.59 |  |  | 277,544 |  |  | 4.50 |  |  | 431,735 |  |  | 7.00 |  |  | 400,897 |  |  | 6.50 |
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 956,783 |  |  | 11.89 |  |  | 321,925 |  |  | 4.00 |  |  | N/A |  | N/A |  | 402,407 |  |  | 5.00 |
1st Source Bank |  | 891,458 |  |  | 11.08 |  |  | 321,821 |  |  | 4.00 |  |  | N/A |  | N/A |  | 402,277 |  |  | 5.00 |
2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | $ | 966,092 |  |  | 15.99 | % |  | $ | 483,350 |  |  | 8.00 | % |  | $ | 634,397 |  |  | 10.50 | % |  | $ | 604,188 |  |  | 10.00 | %
1st Source Bank |  | 881,983 |  |  | 14.59 |  |  | 483,637 |  |  | 8.00 |  |  | 634,774 |  |  | 10.50 |  |  | 604,546 |  |  | 10.00 |
Tier 1 Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 889,709 |  |  | 14.73 |  |  | 362,513 |  |  | 6.00 |  |  | 513,560 |  |  | 8.50 |  |  | 483,350 |  |  | 8.00 |
1st Source Bank |  | 805,556 |  |  | 13.32 |  |  | 362,728 |  |  | 6.00 |  |  | 513,864 |  |  | 8.50 |  |  | 483,637 |  |  | 8.00 |
Common Equity Tier 1 Capital (to Risk-Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 788,884 |  |  | 13.06 |  |  | 271,884 |  |  | 4.50 |  |  | 422,931 |  |  | 7.00 |  |  | 392,722 |  |  | 6.50 |
1st Source Bank |  | 761,731 |  |  | 12.60 |  |  | 272,046 |  |  | 4.50 |  |  | 423,182 |  |  | 7.00 |  |  | 392,955 |  |  | 6.50 |
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
1st Source Corporation |  | 889,709 |  |  | 12.15 |  |  | 292,977 |  |  | 4.00 |  |  | N/A |  | N/A |  | 366,221 |  |  | 5.00 |
1st Source Bank |  | 805,556 |  |  | 11.00 |  |  | 292,959 |  |  | 4.00 |  |  | N/A |  | N/A |  | 366,199 |  |  | 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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