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LOANS AND CREDIT QUALITY - Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | $ 5,354,257 | $ 5,244,180
Commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 4,244,615 | 3,924,304
Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 886,106 | 1,112,979
Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 450,350 | 467,256
Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 435,756 | 645,723
Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 1,109,642 | 1,319,876
Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 793,927 | 915,123
Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 315,715 | 404,753
Total |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 10,822 | 12,593
Total | Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 6,942 | 10,136
Total | Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 3,874 | 4,922
Total | Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 3,068 | 5,214
Total | Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 3,880 | 2,457
Total | Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,957 | 2,457
Total | Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 923 |
Land |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 1,498 | 3,576
Land | Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 1,498 | 3,576
Land | Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 1,111 | 1,789
Land | Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 387 | 1,787
Land | Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Land | Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Land | Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 |
1-4 Family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 3,880 | 3,002
1-4 Family | Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 545
1-4 Family | Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
1-4 Family | Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 545
1-4 Family | Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 3,880 | 2,457
1-4 Family | Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,957 | 2,457
1-4 Family | Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 923 |
Non-residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,763 | 3,133
Non-residential real estate | Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,763 | 3,133
Non-residential real estate | Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,763 | 3,133
Non-residential real estate | Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Non-residential real estate | Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Non-residential real estate | Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Non-residential real estate | Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 |
Other non-real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,681 | 2,882
Other non-real estate | Commercial loans | Commercial and Industrial Sector |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,681 | 2,882
Other non-real estate | Commercial loans | Owner occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Other non-real estate | Commercial loans | Commercial business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 2,681 | 2,882
Other non-real estate | Consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | 0
Other non-real estate | Consumer loans | Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | 0 | $ 0
Other non-real estate | Consumer loans | Home equity and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total LHFI | $ 0 |

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