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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses and Recorded Investment Excluding Accrued Interest in Loans (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | $ 57,649 |  |
Provision for (reversal of) credit losses | 15,761 | $ (2,976) | $ 2,098
Balance at end of period | 78,243 | 57,649 |
Loans: |  |  |
Individually evaluated for impairment | 62,446 |  | 32,964
Collectively evaluated for impairment | 5,605,018 |  | 7,524,236
Total | 5,667,464 | 5,951,885 | 7,557,200
Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 61,713 |  | 66,814
Charge-offs | (2,076) |  | (1,063)
Recoveries of loans previously charged off | 350 |  | 244
Net (charge-offs) recoveries | (1,726) |  | (819)
Provision for (reversal of) credit losses | 15,761 |  | 2,098
Balance at end of period | 82,131 | 61,713 | 68,093
Commercial | Commercial and industrial |  |  |
Loans: |  |  |
Individually evaluated for impairment | 24,594 |  | 4,861
Collectively evaluated for impairment | 1,553,629 |  | 1,902,241
Total | 1,578,223 | 1,691,270 | 1,907,102
Commercial | Commercial real estate |  |  |
Loans: |  |  |
Individually evaluated for impairment | 2,763 |  | 573
Collectively evaluated for impairment | 807,261 |  | 864,948
Total | 810,024 | 818,817 | 865,521
Commercial | Multifamily |  |  |
Loans: |  |  |
Individually evaluated for impairment | 0 |  | 0
Collectively evaluated for impairment | 1,466,083 |  | 2,332,527
Total | 1,466,083 | 1,494,528 | 2,332,527
Commercial | SBA |  |  |
Loans: |  |  |
Individually evaluated for impairment | 5,292 |  | 3,808
Collectively evaluated for impairment | 65,291 |  | 71,190
Total | 70,583 | 70,981 | 74,998
Commercial | Construction |  |  |
Loans: |  |  |
Individually evaluated for impairment | 0 |  | 2,519
Collectively evaluated for impairment | 227,947 |  | 209,030
Total | 227,947 | 231,350 | 211,549
Commercial | Lease Financing |  |  |
Loans: |  |  |
Individually evaluated for impairment |  |  | 0
Collectively evaluated for impairment |  |  | 0
Total |  |  | 0
Consumer | Single Family Residential Mortgage |  |  |
Loans: |  |  |
Individually evaluated for impairment | 29,183 |  | 20,362
Collectively evaluated for impairment | 1,438,192 |  | 2,082,332
Total | 1,467,375 |  | 2,102,694
Consumer | Other Consumer |  |  |
Loans: |  |  |
Individually evaluated for impairment | 614 |  | 841
Collectively evaluated for impairment | 46,615 |  | 61,968
Total | 47,229 |  | 62,809
Allowance for Loan Losses |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 57,649 |  | 62,192
Charge-offs | (2,076) |  | (1,063)
Recoveries of loans previously charged off | 350 |  | 244
Net (charge-offs) recoveries | (1,726) |  | (819)
Provision for (reversal of) credit losses | 14,711 |  | 2,512
Balance at end of period | 78,243 | 57,649 | 63,885
Individually evaluated for impairment | 5,814 |  | 1,945
Collectively evaluated for impairment | 72,429 |  | 61,940
Allowance for Loan Losses | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 57,649 |  | 62,192
Charge-offs | (2,076) |  | (1,063)
Recoveries of loans previously charged off | 350 |  | 244
Net (charge-offs) recoveries | (1,726) |  | (819)
Provision for (reversal of) credit losses | 14,711 |  | 2,512
Balance at end of period | 78,243 | 57,649 | 63,885
Allowance for Loan Losses | Commercial | Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 22,353 |  | 18,191
Charge-offs | (1,164) |  | (93)
Recoveries of loans previously charged off | 30 |  | 33
Net (charge-offs) recoveries | (1,134) |  | (60)
Provision for (reversal of) credit losses | 1,692 |  | 762
Balance at end of period | 23,573 | 22,353 | 18,893
Individually evaluated for impairment | 3,606 |  | 48
Collectively evaluated for impairment | 19,967 |  | 18,845
Allowance for Loan Losses | Commercial | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 5,941 |  | 6,674
Charge-offs | 0 |  | 0
Recoveries of loans previously charged off | 0 |  | 0
Net (charge-offs) recoveries | 0 |  | 0
Provision for (reversal of) credit losses | 2,832 |  | 164
Balance at end of period | 13,620 | 5,941 | 6,838
Individually evaluated for impairment | 0 |  | 0
Collectively evaluated for impairment | 13,620 |  | 6,838
Allowance for Loan Losses | Commercial | Multifamily |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 11,405 |  | 17,970
Charge-offs | 0 |  | 0
Recoveries of loans previously charged off | 0 |  | 0
Net (charge-offs) recoveries | 0 |  | 0
Provision for (reversal of) credit losses | 6,858 |  | 928
Balance at end of period | 20,072 | 11,405 | 18,898
Individually evaluated for impairment | 0 |  | 0
Collectively evaluated for impairment | 20,072 |  | 18,898
Allowance for Loan Losses | Commercial | SBA |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 3,120 |  | 1,827
Charge-offs | (356) |  | (356)
Recoveries of loans previously charged off | 121 |  | 41
Net (charge-offs) recoveries | (235) |  | (315)
Provision for (reversal of) credit losses | 379 |  | 1,545
Balance at end of period | 3,652 | 3,120 | 3,057
Individually evaluated for impairment | 2,208 |  | 1,634
Collectively evaluated for impairment | 1,444 |  | 1,423
Allowance for Loan Losses | Commercial | Construction |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 3,906 |  | 3,461
Charge-offs | 0 |  | 0
Recoveries of loans previously charged off | 0 |  | 0
Net (charge-offs) recoveries | 0 |  | 0
Provision for (reversal of) credit losses | 3,043 |  | (8)
Balance at end of period | 7,052 | 3,906 | 3,453
Individually evaluated for impairment | 0 |  | 0
Collectively evaluated for impairment | 7,052 |  | 3,453
Allowance for Loan Losses | Commercial | Lease Financing |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 0
Charge-offs |  |  | 0
Recoveries of loans previously charged off |  |  | 3
Net (charge-offs) recoveries |  |  | 3
Provision for (reversal of) credit losses |  |  | (3)
Balance at end of period |  |  | 0
Individually evaluated for impairment |  |  | 0
Collectively evaluated for impairment |  |  | 0
Allowance for Loan Losses | Consumer | Single Family Residential Mortgage |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 10,486 |  | 13,128
Charge-offs | (552) |  | (526)
Recoveries of loans previously charged off | 151 |  | 150
Net (charge-offs) recoveries | (401) |  | (376)
Provision for (reversal of) credit losses | (72) |  | (610)
Balance at end of period | 9,593 | 10,486 | 12,142
Individually evaluated for impairment | 0 |  | 230
Collectively evaluated for impairment | 9,593 |  | 11,912
Allowance for Loan Losses | Consumer | Other Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 438 |  | 941
Charge-offs | (4) |  | (88)
Recoveries of loans previously charged off | 48 |  | 17
Net (charge-offs) recoveries | 44 |  | (71)
Provision for (reversal of) credit losses | (21) |  | (266)
Balance at end of period | 681 | 438 | 604
Individually evaluated for impairment | 0 |  | 33
Collectively evaluated for impairment | 681 |  | 571
Impact of adopting ASU 2016-13 | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period | 6,383 |  | 0
Balance at end of period |  | 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 |  |
Balance at end 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 | 7,609 |  | $ 0
Balance at end of period |  | 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 |  |
Balance at end 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 |  |
Balance at end 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 |  |
Balance at end 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 |  |
Balance at end 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 |  |
Balance at end 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) |  |
Balance at end 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 |  |
Balance at end 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=119407570&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=118955255&loc=SL82922352-210448 + Details
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