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FAIR VALUE MEASUREMENTS - Schedule of Estimated Non-recurring Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financial Assets |  |
Trading security | $ 6,700 | $ 8,400
Marketable equity securities | 12,856 | 15,453
Securities available for sale, at fair value | 1,423,200 | 1,877,585
Securities held to maturity | 507,464 | 647,236
FHLB stock and restricted equity securities | 7,219 | 10,800
Accrued interest receivable | 46,868 | 33,534
Carrying Amount |  |
Financial Assets |  |
Cash and cash equivalents | 685,355 | 1,627,807
Trading security | 6,708 | 8,354
Marketable equity securities | 12,856 | 15,453
Securities available for sale, at fair value | 1,423,200 | 1,877,585
Securities held to maturity | 583,453 | 636,503
FHLB stock and restricted equity securities | 7,219 | 10,800
Net loans | 8,239,039 | 6,719,753
Loans held for sale | 4,311 | 6,110
Accrued interest receivable | 46,868 | 33,534
Derivative assets | 54,241 | 79,528
Assets from discontinued operations |  | 0
Financial Liabilities |  |
Total deposits | 10,327,269 | 10,068,953
Short-term debt | 0 | 0
Long-term FHLB advances | 4,445 | 13,331
Subordinated notes | 121,064 | 97,513
Derivative liabilities | 97,030 | 35,194
Fair Value |  |
Financial Assets |  |
Cash and cash equivalents | 685,355 | 1,627,807
Trading security | 6,708 | 8,354
Marketable equity securities | 12,856 | 15,453
Securities available for sale, at fair value | 1,423,200 | 1,877,585
Securities held to maturity | 507,464 | 647,236
Net loans | 8,194,110 | 6,850,975
Loans held for sale | 4,311 | 6,110
Accrued interest receivable | 46,868 | 33,534
Derivative assets | 54,241 | 79,528
Assets from discontinued operations |  | 0
Financial Liabilities |  |
Total deposits | 10,283,543 | 10,073,217
Short-term debt | 0 | 0
Long-term FHLB advances | 2,782 | 13,053
Subordinated notes | 110,853 | 95,006
Derivative liabilities | 97,030 | 35,194
Level 1 |  |
Financial Assets |  |
Cash and cash equivalents | 685,355 | 1,627,807
Trading security | 0 | 0
Marketable equity securities | 12,856 | 14,798
Securities available for sale, at fair value | 11,973 | 0
Securities held to maturity | 0 | 0
Net loans | 0 | 0
Loans held for sale | 0 | 0
Accrued interest receivable | 0 | 0
Derivative assets | 0 | 0
Assets from discontinued operations |  | 0
Financial Liabilities |  |
Total deposits | 0 | 0
Short-term debt | 0 | 0
Long-term FHLB advances | 0 | 0
Subordinated notes | 0 | 0
Derivative liabilities | 0 | 0
Level 2 |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Trading security | 0 | 0
Marketable equity securities | 0 | 655
Securities available for sale, at fair value | 1,407,227 | 1,873,555
Securities held to maturity | 505,508 | 644,497
Net loans | 0 | 0
Loans held for sale | 942 | 6,110
Accrued interest receivable | 46,868 | 33,534
Derivative assets | 54,216 | 79,270
Assets from discontinued operations |  | 0
Financial Liabilities |  |
Total deposits | 10,283,543 | 10,073,217
Short-term debt | 0 | 0
Long-term FHLB advances | 2,782 | 13,053
Subordinated notes | 110,853 | 95,006
Derivative liabilities | 97,030 | 35,194
Level 3 |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Trading security | 6,708 | 8,354
Marketable equity securities | 0 | 0
Securities available for sale, at fair value | 4,000 | 4,030
Securities held to maturity | 1,956 | 2,739
Net loans | 8,194,110 | 6,850,975
Loans held for sale | 3,369 | 0
Accrued interest receivable | 0 | 0
Derivative assets | 25 | 258
Assets from discontinued operations |  | 0
Financial Liabilities |  |
Total deposits | 0 | 0
Short-term debt | 0 | 0
Long-term FHLB advances | 0 | 0
Subordinated notes | 0 | 0
Derivative liabilities | $ 0 | $ 0

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