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Regulatory Capital Requirements (Tables) | 12 Months Ended
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Dec. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | The Company and its banking subsidiary’s actual capital amounts and ratios as of December 31, 2021 and 2020 are presented in the following table:
|  | Actual |  | Minimum Required For Capital Adequacy Purposes |  | Minimum Required Plus Capital Conservation Buffer |  | To Be Well Capitalized Under Prompt Corrective Action Provision
Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
|  | (dollars in thousands)
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 13.01 | % |  | $ | 591,585 |  |  | 4.50 | % |  | $ | 920,244 |  |  | 7.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 13.06 | % |  | $ | 591,154 |  |  | 4.50 | % |  | $ | 919,754 |  |  | 7.00 | % |  | $ | 853,890 |  |  | 6.50 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 13.01 | % |  | $ | 788,780 |  |  | 6.00 | % |  | $ | 1,117,439 |  |  | 8.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 13.06 | % |  | $ | 788,206 |  |  | 6.00 | % |  | $ | 1,116,625 |  |  | 8.50 | % |  | $ | 1,050,941 |  |  | 8.00 | %
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,868,192 |  |  | 14.21 | % |  | $ | 1,051,707 |  |  | 8.00 | % |  | $ | 1,380,366 |  |  | 10.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,863,397 |  |  | 14.18 | % |  | $ | 1,050,941 |  |  | 8.00 | % |  | $ | 1,379,360 |  |  | 10.50 | % |  | $ | 1,313,677 |  |  | 10.00 | %
Tier 1 Capital Leverage (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 8.55 | % |  | $ | 800,615 |  |  | 4.00 | % |  | $ | 800,615 |  |  | 4.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 8.60 | % |  | $ | 798,206 |  |  | 4.00 | % |  | $ | 798,206 |  |  | 4.00 | % |  | $ | 997,757 |  |  | 5.00 | %
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,390,958 |  |  | 12.88 | % |  | $ | 486,080 |  |  | 4.50 | % |  | $ | 756,125 |  |  | 7.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,411,834 |  |  | 13.08 | % |  | $ | 485,775 |  |  | 4.50 | % |  | $ | 755,651 |  |  | 7.00 | % |  | $ | 701,676 |  |  | 6.50 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,390,958 |  |  | 12.88 | % |  | $ | 648,107 |  |  | 6.00 | % |  | $ | 918,152 |  |  | 8.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,411,834 |  |  | 13.08 | % |  | $ | 647,700 |  |  | 6.00 | % |  | $ | 917,576 |  |  | 8.50 | % |  | $ | 863,601 |  |  | 8.00 | %
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,561,020 |  |  | 14.45 | % |  | $ | 864,143 |  |  | 8.00 | % |  | $ | 1,134,187 |  |  | 10.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,546,804 |  |  | 14.33 | % |  | $ | 863,601 |  |  | 8.00 | % |  | $ | 1,133,476 |  |  | 10.50 | % |  | $ | 1,079,501 |  |  | 10.00 | %
Tier 1 Capital Leverage (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,390,958 |  |  | 8.86 | % |  | $ | 628,112 |  |  | 4.00 | % |  | $ | 628,112 |  |  | 4.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,411,834 |  |  | 9.08 | % |  | $ | 622,171 |  |  | 4.00 | % |  | $ | 622,171 |  |  | 4.00 | % |  | $ | 777,714 |  |  | 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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