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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses and Recorded Investment Excluding Accrued Interest in Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | $ 57,649 |  |
Provision (reversal of provision) | 29,719 | $ 35,829 | $ 31,121
Balance at end of year | 81,030 | 57,649 |
Commercial real estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 61,713 | 66,814 | 53,049
Charge-offs | (15,417) | (41,766) | (18,499)
Recoveries | 1,815 | 836 | 1,143
Net (charge-offs) recoveries | (13,602) | (40,930) | (17,356)
Provision (reversal of provision) | 29,719 | 35,829 | 31,121
Balance at end of year | 84,213 | 61,713 | 66,814
Commercial real estate | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 6,383 | 0 | 0
Balance at end of year |  | 6,383 | 0
Allowance for Loan Losses |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 57,649 | 62,192 |
Charge-offs | (15,417) | (41,766) |
Recoveries | 1,815 | 836 |
Net (charge-offs) recoveries | (13,602) | (40,930) |
Provision (reversal of provision) | 29,374 | 36,387 |
Balance at end of year | 81,030 | 57,649 | 62,192
Allowance for Loan Losses | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 7,609 |  |
Balance at end of year |  | 7,609 |
Allowance for Loan Losses | Commercial real estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 57,649 | 62,192 | 49,333
Charge-offs | (15,417) | (41,766) | (18,499)
Recoveries | 1,815 | 836 | 1,143
Net (charge-offs) recoveries | (13,602) | (40,930) | (17,356)
Provision (reversal of provision) | 29,374 | 36,387 | 30,215
Balance at end of year | 81,030 | 57,649 | 62,192
Allowance for Loan Losses | Commercial real estate | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 7,609 | 0 | 0
Balance at end of year |  | 7,609 | 0
Allowance for Loan Losses | Commercial | Commercial and industrial |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 22,353 | 18,191 |
Charge-offs | (13,588) | (36,787) |
Recoveries | 604 | 138 |
Net (charge-offs) recoveries | (12,984) | (36,649) |
Provision (reversal of provision) | 10,577 | 40,811 |
Balance at end of year | 20,608 | 22,353 | 18,191
Allowance for Loan Losses | Commercial | Commercial and industrial | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 662 |  |
Balance at end of year |  | 662 |
Allowance for Loan Losses | Commercial | Commercial real estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 5,941 | 6,674 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Net (charge-offs) recoveries | 0 | 0 |
Provision (reversal of provision) | 8,286 | (733) |
Balance at end of year | 19,074 | 5,941 | 6,674
Allowance for Loan Losses | Commercial | Commercial real estate | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 4,847 |  |
Balance at end of year |  | 4,847 |
Allowance for Loan Losses | Commercial | Multifamily |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 11,405 | 17,970 |
Charge-offs | 0 | (6) |
Recoveries | 0 | 0 |
Net (charge-offs) recoveries | 0 | (6) |
Provision (reversal of provision) | 9,298 | (6,559) |
Balance at end of year | 22,512 | 11,405 | 17,970
Allowance for Loan Losses | Commercial | Multifamily | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 1,809 |  |
Balance at end of year |  | 1,809 |
Allowance for Loan Losses | Commercial | SBA |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 3,120 | 1,827 |
Charge-offs | (1,083) | (2,121) |
Recoveries | 328 | 217 |
Net (charge-offs) recoveries | (755) | (1,904) |
Provision (reversal of provision) | 392 | 3,197 |
Balance at end of year | 3,145 | 3,120 | 1,827
Allowance for Loan Losses | Commercial | SBA | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 388 |  |
Balance at end of year |  | 388 |
Allowance for Loan Losses | Commercial | Construction |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 3,906 | 3,461 |
Charge-offs | 0 | (371) |
Recoveries | 0 | 0 |
Net (charge-offs) recoveries | 0 | (371) |
Provision (reversal of provision) | 1,840 | 816 |
Balance at end of year | 5,849 | 3,906 | 3,461
Allowance for Loan Losses | Commercial | Construction | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 103 |  |
Balance at end of year |  | 103 |
Allowance for Loan Losses | Commercial | Lease financing |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 0 | 0 |
Charge-offs |  | 0 |
Recoveries |  | 12 |
Net (charge-offs) recoveries |  | 12 |
Provision (reversal of provision) |  | (12) |
Balance at end of year |  | 0 | 0
Allowance for Loan Losses | Consumer | Single Family Residential Mortgage |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 10,486 | 13,128 |
Charge-offs | (742) | (2,369) |
Recoveries | 664 | 150 |
Net (charge-offs) recoveries | (78) | (2,219) |
Provision (reversal of provision) | (797) | (423) |
Balance at end of year | 9,191 | 10,486 | 13,128
Allowance for Loan Losses | Consumer | Single Family Residential Mortgage | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | (420) |  |
Balance at end of year |  | (420) |
Allowance for Loan Losses | Consumer | Other Consumer |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 438 | 941 |
Charge-offs | (4) | (112) |
Recoveries | 219 | 319 |
Net (charge-offs) recoveries | 215 | 207 |
Provision (reversal of provision) | (222) | (710) |
Balance at end of year | 651 | 438 | 941
Allowance for Loan Losses | Consumer | Other Consumer | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 220 |  |
Balance at end of year |  | 220 |
Reserve for Unfunded Loan Commit-ments | Commercial real estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | 4,064 | 4,622 | 3,716
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Net (charge-offs) recoveries | 0 | 0 | 0
Provision (reversal of provision) | 345 | (558) | 906
Balance at end of year | 3,183 | 4,064 | 4,622
Reserve for Unfunded Loan Commit-ments | Commercial real estate | Impact of ASC 326 Adoption |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at beginning of year | $ (1,226) | 0 | 0
Balance at end of year |  | $ (1,226) | $ 0

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