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COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | $ 276,786 | $ 116,839
Loans | 4,860,569 | 4,139,672
Total pledged assets | 6,346,607 | 5,300,858
Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 767,599 | 733,995
Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 441,653 | 310,352
Public deposits |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 908,958 | 759,362
Public deposits | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 476,167 | 467,266
Public deposits | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 432,791 | 292,096
Repurchase agreements |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 111,781 | 86,901
Repurchase agreements | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 111,781 | 79,299
Repurchase agreements | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 7,602
FHLB Advances |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 4,354,063 | 3,846,934
Total pledged assets | 4,408,258 | 3,910,746
FHLB Advances | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 54,195 | 63,812
FHLB Advances | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Fed Funds |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 316,561 | 292,738
Total pledged assets | 316,561 | 292,738
Fed Funds | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Fed Funds | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Derivatives |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 276,786 | 116,839
Loans | 0 | 0
Total pledged assets | 277,725 | 118,099
Derivatives | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 939 | 1,260
Derivatives | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 | 0
Other purposes |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 | 0
Loans | 0 | 0
Total pledged assets | 133,379 | 133,012
Other purposes | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 124,517 | 122,358
Other purposes | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 8,862 | $ 10,654
PPPLF Advances |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Cash | 0 |
Loans | 189,945 |
Total pledged assets | 189,945 |
PPPLF Advances | Available-for-sale Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | 0 |
PPPLF Advances | Held-to-maturity Securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Securities pledged | $ 0 |

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- Definition The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
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