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BASIS OF PRESENTATION (Details) $ / shares in Units, $ in Millions | Sep. 08, 2021 USD ($) $ / shares | Sep. 01, 2021 USD ($) | Jul. 28, 2021 $ / shares | Sep. 30, 2021 USD ($) | May 26, 2021 USD ($) branch
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Willamette |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill acquired |  | $ 15 |  |  |
80 Branches And Deposit Business, HSBC Bank |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of branches acquired | branch |  |  |  |  | 80
Premium paid on deposits, percent |  |  |  |  | 2.00%
Deposits |  |  |  |  | $ 8,400
Loans of acquiree |  |  |  |  | $ 1,900
80 Branches And Deposit Business, HSBC Bank | New York City Metro |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of branches acquired | branch |  |  |  |  | 66
80 Branches And Deposit Business, HSBC Bank | Mid-Atlantic/Washington D.C. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of branches acquired | branch |  |  |  |  | 9
80 Branches And Deposit Business, HSBC Bank | Southeast Florida |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of branches acquired | branch |  |  |  |  | 5
Bancorp, Inc. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Deposits |  |  |  | $ 20,400 |
Loans of acquiree |  |  |  | 21,600 |
Cash paid for each share (in dollars per share) | $ / shares |  |  | $ 1.46 |  |
Assets of acquiree |  |  |  | 27,300 |
Liabilities of acquiree |  |  |  | 24,500 |
Stockholders' equity of acquiree |  |  |  | $ 2,800 |
Bancorp, Inc. | Common Stock |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Stock consideration (in dollars per each share) | $ / shares |  |  | $ 0.297 |  |
JMP |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Stock consideration (in dollars per each share) | $ / shares | $ 7.50 |  |  |  |
Cash consideration | $ 149 |  |  |  |

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