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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses and Recorded Investment Excluding Accrued Interest in Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Jun. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  | $ 81,030 |
(Reversal of) provision for credit losses - loans | $ (1,147) | $ (2,154) | $ 1,141 | (4,408) | $ 28,728
Balance at end of period | 73,524 |  |  | 73,524 |
Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 79,699 |  | 94,565 | 84,213 | 61,713
Loans charged off | (327) |  | (1,821) | (1,778) | (3,897)
Recoveries of loans previously charged off | 532 |  | 248 | 730 | 1,206
Net recoveries (charge-offs) | 205 |  | (1,573) | (1,048) | (2,691)
(Reversal of) provision for credit losses - loans | (1,147) |  | 1,141 | (4,408) | 28,728
Balance at end of period | 78,757 | 79,699 | 94,133 | 78,757 | 94,133
Allowance for Loan Losses |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 75,885 |  | 90,370 | 81,030 | 57,649
Loans charged off | (327) |  | (1,821) | (1,778) | (3,897)
Recoveries of loans previously charged off | 532 |  | 248 | 730 | 1,206
Net recoveries (charge-offs) | 205 |  | (1,573) | (1,048) | (2,691)
(Reversal of) provision for credit losses - loans | (2,566) |  | 2,130 | (6,458) | 28,360
Balance at end of period | 73,524 | 75,885 | 90,927 | 73,524 | 90,927
Allowance for Loan Losses | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 75,885 |  | 90,370 | 81,030 | 57,649
Loans charged off | (327) |  | (1,821) | (1,778) | (3,897)
Recoveries of loans previously charged off | 532 |  | 248 | 730 | 1,206
Net recoveries (charge-offs) | 205 |  | (1,573) | (1,048) | (2,691)
(Reversal of) provision for credit losses - loans | (2,566) |  | 2,130 | (6,458) | 28,360
Balance at end of period | 73,524 | 75,885 | 90,927 | 73,524 | 90,927
Allowance for Loan Losses | Commercial | Commercial and industrial |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 20,156 |  | 26,618 | 20,608 | 22,353
Loans charged off | (115) |  | (1,597) | (1,180) | (2,761)
Recoveries of loans previously charged off | 484 |  | 116 | 553 | 265
Net recoveries (charge-offs) | 369 |  | (1,481) | (627) | (2,496)
(Reversal of) provision for credit losses - loans | (270) |  | 1,454 | 274 | 6,072
Balance at end of period | 20,255 | 20,156 | 26,591 | 20,255 | 26,591
Allowance for Loan Losses | Commercial | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 16,424 |  | 17,372 | 19,074 | 5,941
Loans charged off | (138) |  | 0 | (138) | 0
Recoveries of loans previously charged off | 0 |  | 0 | 0 | 0
Net recoveries (charge-offs) | (138) |  | 0 | (138) | 0
(Reversal of) provision for credit losses - loans | (269) |  | 2,001 | (2,919) | 8,585
Balance at end of period | 16,017 | 16,424 | 19,373 | 16,017 | 19,373
Allowance for Loan Losses | Commercial | Multifamily |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 21,403 |  | 25,105 | 22,512 | 11,405
Loans charged off | 0 |  | 0 | 0 | 0
Recoveries of loans previously charged off | 0 |  | 0 | 0 | 0
Net recoveries (charge-offs) | 0 |  | 0 | 0 | 0
(Reversal of) provision for credit losses - loans | (2,678) |  | 454 | (3,787) | 12,345
Balance at end of period | 18,725 | 21,403 | 25,559 | 18,725 | 25,559
Allowance for Loan Losses | Commercial | SBA |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 3,696 |  | 4,184 | 3,145 | 3,120
Loans charged off | (74) |  | (224) | (460) | (580)
Recoveries of loans previously charged off | 1 |  | 132 | 130 | 253
Net recoveries (charge-offs) | (73) |  | (92) | (330) | (327)
(Reversal of) provision for credit losses - loans | 1,112 |  | (535) | 1,920 | 376
Balance at end of period | 4,735 | 3,696 | 3,557 | 4,735 | 3,557
Allowance for Loan Losses | Commercial | Construction |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 4,734 |  | 6,675 | 5,849 | 3,906
Loans charged off | 0 |  | 0 | 0 | 0
Recoveries of loans previously charged off | 0 |  | 0 | 0 | 0
Net recoveries (charge-offs) | 0 |  | 0 | 0 | 0
(Reversal of) provision for credit losses - loans | (616) |  | (470) | (1,731) | 2,196
Balance at end of period | 4,118 | 4,734 | 6,205 | 4,118 | 6,205
Allowance for Loan Losses | Consumer | Single Family Residential Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 9,108 |  | 9,665 | 9,191 | 10,486
Loans charged off | 0 |  | 0 | 0 | (552)
Recoveries of loans previously charged off | 46 |  | 0 | 46 | 639
Net recoveries (charge-offs) | 46 |  | 0 | 46 | 87
(Reversal of) provision for credit losses - loans | 150 |  | (689) | 67 | (1,177)
Balance at end of period | 9,304 | 9,108 | 8,976 | 9,304 | 8,976
Allowance for Loan Losses | Consumer | Other Consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 364 |  | 751 | 651 | 438
Loans charged off | 0 |  | 0 | 0 | (4)
Recoveries of loans previously charged off | 1 |  | 0 | 1 | 49
Net recoveries (charge-offs) | 1 |  | 0 | 1 | 45
(Reversal of) provision for credit losses - loans | 5 |  | (85) | (282) | (37)
Balance at end of period | $ 370 | $ 364 | $ 666 | 370 | 666
Impact of adopting ASU 2016-13 | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  | 0 | 6,383
Impact of adopting ASU 2016-13 | Allowance for Loan Losses |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 7,609
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  | $ 0 | 7,609
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Commercial and industrial |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 662
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 4,847
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Multifamily |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 1,809
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | SBA |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 388
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Construction |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | 103
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Consumer | Single Family Residential Mortgage |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | (420)
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Consumer | Other Consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period |  |  |  |  | $ 220

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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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