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Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2021
Regulatory Capital [Abstract] |
Summary of Capital Amounts, Tier 1 Risk Based and Tier 1 Leveraged Ratios | Generally, to comply with the regulatory definition of adequately capitalized, or well capitalized, respectively, or to comply with the Basel III capital requirements, an institution must at least maintain the common equity Tier 1, Tier 1 and total risk-based capital ratios and the Tier 1 leverage ratio in excess of the related minimum ratios set forth in the following table:
|  |  |  |  | Minimum Capital Levels to be Classified as:
| Actual |  | Adequately Capitalized |  | Well Capitalized |  | Basel III Compliant
(dollars in thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common equity Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,291,270 |  |  | 9.981 | % |  | $ | 582,179 |  |  | 4.500 | % |  | N/A |  | N/A |  | $ | 905,611 |  |  | 7.000 | %
Customers Bank | $ | 1,526,583 |  |  | 11.825 | % |  | $ | 580,943 |  |  | 4.500 | % |  | $ | 839,140 |  |  | 6.500 | % |  | $ | 903,689 |  |  | 7.000 | %
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,429,063 |  |  | 11.046 | % |  | $ | 776,238 |  |  | 6.000 | % |  | N/A |  | N/A |  | $ | 1,099,671 |  |  | 8.500 | %
Customers Bank | $ | 1,526,583 |  |  | 11.825 | % |  | $ | 774,591 |  |  | 6.000 | % |  | $ | 1,032,788 |  |  | 8.000 | % |  | $ | 1,097,337 |  |  | 8.500 | %
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,667,395 |  |  | 12.888 | % |  | $ | 1,034,984 |  |  | 8.000 | % |  | N/A |  | N/A |  | $ | 1,358,417 |  |  | 10.500 | %
Customers Bank | $ | 1,692,512 |  |  | 13.110 | % |  | $ | 1,032,788 |  |  | 8.000 | % |  | $ | 1,290,985 |  |  | 10.000 | % |  | $ | 1,355,534 |  |  | 10.500 | %
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,429,063 |  |  | 7.413 | % |  | $ | 771,084 |  |  | 4.000 | % |  | N/A |  | N/A |  | $ | 771,084 |  |  | 4.000 | %
Customers Bank | $ | 1,526,583 |  |  | 7.925 | % |  | $ | 770,528 |  |  | 4.000 | % |  | $ | 963,160 |  |  | 5.000 | % |  | $ | 770,528 |  |  | 4.000 | %
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common equity Tier 1 (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 954,839 |  |  | 8.079 | % |  | $ | 531,844 |  |  | 4.500 | % |  | N/A |  | N/A |  | $ | 827,312 |  |  | 7.000 | %
Customers Bank | $ | 1,254,082 |  |  | 10.615 | % |  | $ | 531,639 |  |  | 4.500 | % |  | $ | 767,923 |  |  | 6.500 | % |  | $ | 826,994 |  |  | 7.000 | %
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,172,310 |  |  | 9.919 | % |  | $ | 709,125 |  |  | 6.000 | % |  | N/A |  | N/A |  | $ | 1,004,594 |  |  | 8.500 | %
Customers Bank | $ | 1,254,082 |  |  | 10.615 | % |  | $ | 708,852 |  |  | 6.000 | % |  | $ | 945,136 |  |  | 8.000 | % |  | $ | 1,004,207 |  |  | 8.500 | %
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,401,119 |  |  | 11.855 | % |  | $ | 945,500 |  |  | 8.000 | % |  | N/A |  | N/A |  | $ | 1,240,969 |  |  | 10.500 | %
Customers Bank | $ | 1,424,791 |  |  | 12.060 | % |  | $ | 945,136 |  |  | 8.000 | % |  | $ | 1,181,421 |  |  | 10.000 | % |  | $ | 1,240,492 |  |  | 10.500 | %
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customers Bancorp, Inc. | $ | 1,172,310 |  |  | 8.597 | % |  | $ | 545,485 |  |  | 4.000 | % |  | N/A |  | N/A |  | $ | 545,485 |  |  | 4.000 | %
Customers Bank | $ | 1,254,082 |  |  | 9.208 | % |  | $ | 544,758 |  |  | 4.000 | % |  | $ | 680,947 |  |  | 5.000 | % |  | $ | 544,758 |  |  | 4.000 | %

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- Definition Regulatory Capital + References No definition available. + Details
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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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