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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Text Block [Abstract] |
Schedule of Regulatory Capital Ratio Requirments under Banking Regulations [Table Text Block] | In addition, the Basel III regulatory capital reforms (“Basel III”) implemented a capital conservation buffer of 2.5%. The Basel III minimum capital ratio requirements as applicable to the Company and the Bank are summarized in the table below.
|  | BASEL III Minimum for Capital Adequacy Requirements |  |  | BASEL III Additional Capital Conservation Buffer |  |  | BASEL III Ratio with Capital Conservation Buffer |
Total Risk Based Capital (total capital to risk weighted assets) |  |  | 8.0 | % |  |  | 2.5 | % |  |  | 10.5 | %
Tier 1 Risk Based Capital (tier 1 to risk weighted assets) |  |  | 6.0 | % |  |  | 2.5 | % |  |  | 8.5 | %
Common Equity Tier 1 Risk Based ( CET1 to risk weighted assets) |  |  | 4.5 | % |  |  | 2.5 | % |  |  | 7.0 | %
Tier 1 Leverage Ratio (tier 1 to average assets) |  |  | 4.0 | % |  |  | - | % |  |  | 4.0 | %
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] | The regulatory capital ratios of the Company and the Bank are as follows:
|  | Actual |  |  | Minimum Capital Required - Basel III |  |  | Required to be Considered Well Capitalized |
(In thousands, except percentages) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
As of December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  | $ | 66,946 |  |  |  | 18.55 | % |  | $ | 37,894 |  |  |  | 10.50 | % |  | $ | 36,089 |  |  |  | 10.00 | %
T Bank, N.A. |  |  | 67,454 |  |  |  | 18.87 |  |  |  | 37,542 |  |  |  | 10.50 |  |  |  | 35,754 |  |  |  | 10.00 |
Tier 1 Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 62,794 |  |  |  | 17.40 |  |  |  | 30,676 |  |  |  | 8.50 |  |  |  | 28,871 |  |  |  | 8.00 |
T Bank, N.A. |  |  | 63,302 |  |  |  | 17.70 |  |  |  | 30,391 |  |  |  | 8.50 |  |  |  | 28,604 |  |  |  | 8.00 |
Common Equity Tier 1 (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 45,544 |  |  |  | 12.62 |  |  |  | 25,263 |  |  |  | 7.00 |  |  |  | 23,458 |  |  |  | 6.50 |
T Bank, N.A. |  |  | 63,302 |  |  |  | 17.70 |  |  |  | 25,028 |  |  |  | 7.00 |  |  |  | 23,240 |  |  |  | 6.50 |
Tier 1 Capital (to Average Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 62,794 |  |  |  | 11.82 |  |  |  | 21,245 |  |  |  | 4.00 |  |  |  | 26,557 |  |  |  | 5.00 |
T Bank, N.A. |  |  | 63,302 |  |  |  | 12.06 |  |  |  | 21,002 |  |  |  | 4.00 |  |  |  | 26,252 |  |  |  | 5.00 |
As of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  | $ | 50,987 |  |  |  | 18.22 | % |  | $ | 29,379 |  |  |  | 10.50 | % |  | $ | 27,980 |  |  |  | 10.00 | %
T Bank, N.A. |  |  | 50,012 |  |  |  | 18.25 |  |  |  | 28,782 |  |  |  | 10.50 |  |  |  | 27,411 |  |  |  | 10.00 |
Tier 1 Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 48,046 |  |  |  | 17.17 |  |  |  | 23,783 |  |  |  | 8.50 |  |  |  | 22,384 |  |  |  | 8.00 |
T Bank, N.A. |  |  | 47,071 |  |  |  | 17.17 |  |  |  | 23,299 |  |  |  | 8.50 |  |  |  | 21,929 |  |  |  | 8.00 |
Common Equity Tier 1 (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 30,796 |  |  |  | 11.01 |  |  |  | 19,586 |  |  |  | 7.00 |  |  |  | 18,187 |  |  |  | 6.50 |
T Bank, N.A. |  |  | 47,071 |  |  |  | 17.17 |  |  |  | 19,188 |  |  |  | 7.00 |  |  |  | 17,817 |  |  |  | 6.50 |
Tier 1 Capital (to Average Assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tectonic Financial, Inc. (consolidated) |  |  | 48,046 |  |  |  | 11.66 |  |  |  | 16,480 |  |  |  | 4.00 |  |  |  | 20,601 |  |  |  | 5.00 |
T Bank, N.A. |  |  | 47,071 |  |  |  | 11.58 |  |  |  | 16,257 |  |  |  | 4.00 |  |  |  | 20,322 |  |  |  | 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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