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Loans and Allowance for Credit Losses on Loans - Loans Balance (Details) - USD ($) | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | ---
Loans held-for-investment: |  |  |  |  |
Total loan balance | $ 2,625,987,000 | $ 31,855,000 | $ 2,534,163,000 |  |
Deferred loan fees, net | (6,726,000) |  | (319,000) |  |
Loans, net of deferred fees | 2,619,261,000 |  | 2,533,844,000 | $ 1,886,405,000 |
Allowance for credit losses on loans(1) | (44,400,000) | (31,855,000) | (23,285,000) | (27,848,000) | $ (19,658,000)
Loans, net | 2,574,861,000 |  | 2,510,559,000 |  |
Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 603,345,000 |  |
Allowance for credit losses on loans(1) |  |  | (10,453,000) | (17,061,000) | (10,608,000)
Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 1,897,074,000 |  |
Allowance for credit losses on loans(1) |  |  | (12,750,000) | (10,671,000) | (8,950,000)
Consumer |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 33,744,000 |  |
Allowance for credit losses on loans(1) |  |  | (82,000) | $ (116,000) | $ (100,000)
Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 846,386,000 | 6,790,000 | 603,345,000 |  |
Allowance for credit losses on loans(1) | (11,587,000) | (6,790,000) | (10,453,000) |  |
Commercial | Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 846,386,000 |  | 603,345,000 |  |
SBA Paycheck Protection Program ("PPP") loans | Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 290,679,000 |  |  |  |
CRE - owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 560,362,000 | 6,994,000 | 548,907,000 |  |
Allowance for credit losses on loans(1) | (8,560,000) | (6,994,000) | (3,825,000) |  |
CRE - owner occupied | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 560,362,000 |  | 548,907,000 |  |
CRE - non-owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 693,103,000 | 11,672,000 | 767,821,000 |  |
Allowance for credit losses on loans(1) | (16,416,000) | (11,672,000) | (3,760,000) |  |
CRE - non-owner occupied | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 693,103,000 |  | 767,821,000 |  |
Land and construction |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 144,594,000 | 1,458,000 | 147,189,000 |  |
Allowance for credit losses on loans(1) | (2,509,000) | (1,458,000) | (2,621,000) |  |
Land and construction | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 144,594,000 |  | 147,189,000 |  |
Home equity |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 111,885,000 | 1,321,000 | 151,775,000 |  |
Allowance for credit losses on loans(1) | (1,297,000) | (1,321,000) | (2,244,000) |  |
Home equity | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 111,885,000 |  | 151,775,000 |  |
Multi-family |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 166,425,000 | 1,253,000 | 180,623,000 |  |
Allowance for credit losses on loans(1) | (2,804,000) | (1,253,000) | (57,000) |  |
Multi-family | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 166,425,000 |  | 180,623,000 |  |
Residential mortgages |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 85,116,000 | 678,000 | 100,759,000 |  |
Allowance for credit losses on loans(1) | (943,000) | (678,000) | (243,000) |  |
Residential mortgages | Real estate |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 85,116,000 |  | 100,759,000 |  |
Consumer and other |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | 18,116,000 | 1,689,000 | 33,744,000 |  |
Allowance for credit losses on loans(1) | (284,000) | $ (1,689,000) | (82,000) |  |
Consumer and other | Consumer |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance | $ 18,116,000 |  | 33,744,000 |  |
ASU 2016-03 - Topic 326 |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 8,570,000 |  |
ASU 2016-03 - Topic 326 | Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | (3,663,000) |  |
ASU 2016-03 - Topic 326 | CRE - owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 3,169,000 |  |
ASU 2016-03 - Topic 326 | CRE - non-owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 7,912,000 |  |
ASU 2016-03 - Topic 326 | Land and construction |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | (1,163,000) |  |
ASU 2016-03 - Topic 326 | Home equity |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | (923,000) |  |
ASU 2016-03 - Topic 326 | Multi-family |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 1,196,000 |  |
ASU 2016-03 - Topic 326 | Residential mortgages |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 435,000 |  |
ASU 2016-03 - Topic 326 | Consumer and other |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Allowance for credit losses on loans(1) |  |  | 1,607,000 |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 8,570,000 |  |
Allowance for credit losses on loans(1) |  |  | (8,570,000) |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | (3,663,000) |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | CRE - owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 3,169,000 |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | CRE - non-owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 7,912,000 |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Land and construction |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | (1,163,000) |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Home equity |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | (923,000) |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Multi-family |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 1,196,000 |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Residential mortgages |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 435,000 |  |
Restatement Adjustment | ASU 2016-03 - Topic 326 | Consumer and other |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 1,607,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 23,285,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Commercial |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 10,453,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | CRE - owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 3,825,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | CRE - non-owner occupied |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 3,760,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Land and construction |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 2,621,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Home equity |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 2,244,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Multi-family |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 57,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Residential mortgages |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | 243,000 |  |
Previously Reported | ASU 2016-03 - Topic 326 | Consumer and other |  |  |  |  |
Loans held-for-investment: |  |  |  |  |
Total loan balance |  |  | $ 82,000 |  |

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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