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LONG-TERM DEBT (Details) - USD ($) | Jan. 19, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Outstanding balance, subordinated notes |  | $ 224,137,000 | $ 126,026,000
Subordinated Debt |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding balance, subordinated notes |  | 62,000,000 |
3.5% Subordinated Notes Due 2032 | Subordinated Debt |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt | $ 100,000,000 |  |
Stated interest rate (percent) | 0.035% |  |
Basis spread on variable rate | 2.15% |  |
Net proceeds from issuance of subordinated notes | $ 98,000,000 |  |
Outstanding balance, subordinated notes |  | $ 98,000,000 |
Senior Notes 6.50% Due 2026 | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) |  | 6.50% | 6.50%
Outstanding balance, subordinated notes |  | $ 64,000,000 | $ 64,000,000
Home Street Statutory Trust Subordinated Debt Securities | Subordinated Debt |  |  |
Debt Instrument [Line Items] |  |  |
Outstanding balance, subordinated notes |  |  | $ 62,000,000

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