FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value By Balance Sheet Location) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets:
Trading Securities, Fair Value	$ 0	$ 28,694
Securities—available-for-sale	2,373,783	2,789,031
Loans Held-for-sale, Fair Value	9,105	51,779
Fair Value, Recurring [Member]
Assets:
Securities—available-for-sale	2,373,783	2,789,031
Assets, Fair Value Disclosure	2,412,956	2,853,326
Liabilities:
Junior subordinated debentures at fair value	66,413	74,857
Financial and Nonfinancial Liabilities, Fair Value Disclosure	96,449	112,192
Fair Value, Recurring [Member] | Interest Rate Swap [Member]
Assets:
Derivatives	15,129	19,339
Liabilities:
Derivatives	29,809	37,150
Fair Value, Recurring [Member] | Interest Rate Contract [Member]
Assets:
Derivatives	275	142
Liabilities:
Derivatives	185	118
Fair Value, Recurring [Member] | Loan Participations and Assignments
Liabilities:
Derivatives	42	67
Fair Value, Recurring [Member] | TPS and TRUP CDOs [Member]
Assets:
Trading Securities, Fair Value		28,694
Fair Value, Recurring [Member] | U.S. Government and agency obligations
Assets:
Securities—available-for-sale	34,189	55,108
Fair Value, Recurring [Member] | Municipal bonds
Assets:
Securities—available-for-sale	132,905	261,209
Fair Value, Recurring [Member] | Corporate bonds
Assets:
Securities—available-for-sale	119,123	121,853
Fair Value, Recurring [Member] | Mortgage Backed Securities, Other [Member]
Assets:
Securities—available-for-sale	1,866,714	2,139,336
Fair Value, Recurring [Member] | Asset-backed securities
Assets:
Securities—available-for-sale	220,852	211,525
Fair Value, Recurring [Member] | Loans [Member]
Assets:
Loans Held-for-sale, Fair Value	9,105	2,305
Fair Value, Recurring [Member] | Securities (Assets) [Member]
Assets:
Equity Securities, FV-NI	449
Fair Value, Recurring [Member] | SBA Servicing Asset
Assets:
SBA servicing asset	740	835
Fair Value, Recurring [Member] | Investment in Limited Partnerships
Assets:
Investments in limited partnerships	13,475	12,427
Fair Value, Recurring [Member] | Equity Securities
Assets:
Equity Securities, FV-NI		553
Fair Value, Recurring [Member] | Level 1 [Member]
Assets:
Securities—available-for-sale	0	0
Assets, Fair Value Disclosure	449	553
Liabilities:
Junior subordinated debentures at fair value	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Interest Rate Contract [Member]
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Loan Participations and Assignments
Liabilities:
Derivatives	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | TPS and TRUP CDOs [Member]
Assets:
Trading Securities, Fair Value		0
Fair Value, Recurring [Member] | Level 1 [Member] | U.S. Government and agency obligations
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Municipal bonds
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Corporate bonds
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Mortgage Backed Securities, Other [Member]
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Asset-backed securities
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Loans [Member]
Assets:
Loans Held-for-sale, Fair Value	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Securities (Assets) [Member]
Assets:
Equity Securities, FV-NI	449
Fair Value, Recurring [Member] | Level 1 [Member] | SBA Servicing Asset
Assets:
SBA servicing asset	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Investment in Limited Partnerships
Assets:
Investments in limited partnerships	0	0
Fair Value, Recurring [Member] | Level 1 [Member] | Equity Securities
Assets:
Equity Securities, FV-NI		553
Fair Value, Recurring [Member] | Level 2 [Member]
Assets:
Securities—available-for-sale	2,348,479	2,789,031
Assets, Fair Value Disclosure	2,372,713	2,810,736
Liabilities:
Junior subordinated debentures at fair value	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	30,012	37,293
Fair Value, Recurring [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Assets:
Derivatives	15,129	19,339
Liabilities:
Derivatives	29,809	37,150
Fair Value, Recurring [Member] | Level 2 [Member] | Interest Rate Contract [Member]
Assets:
Derivatives	0	61
Liabilities:
Derivatives	161	76
Fair Value, Recurring [Member] | Level 2 [Member] | Loan Participations and Assignments
Liabilities:
Derivatives	42	67
Fair Value, Recurring [Member] | Level 2 [Member] | TPS and TRUP CDOs [Member]
Assets:
Trading Securities, Fair Value		0
Fair Value, Recurring [Member] | Level 2 [Member] | U.S. Government and agency obligations
Assets:
Securities—available-for-sale	34,189	55,108
Fair Value, Recurring [Member] | Level 2 [Member] | Municipal bonds
Assets:
Securities—available-for-sale	132,905	261,209
Fair Value, Recurring [Member] | Level 2 [Member] | Corporate bonds
Assets:
Securities—available-for-sale	93,819	121,853
Fair Value, Recurring [Member] | Level 2 [Member] | Mortgage Backed Securities, Other [Member]
Assets:
Securities—available-for-sale	1,866,714	2,139,336
Fair Value, Recurring [Member] | Level 2 [Member] | Asset-backed securities
Assets:
Securities—available-for-sale	220,852	211,525
Fair Value, Recurring [Member] | Level 2 [Member] | Loans [Member]
Assets:
Loans Held-for-sale, Fair Value	9,105	2,305
Fair Value, Recurring [Member] | Level 2 [Member] | Securities (Assets) [Member]
Assets:
Equity Securities, FV-NI	0
Fair Value, Recurring [Member] | Level 2 [Member] | SBA Servicing Asset
Assets:
SBA servicing asset	0	0
Fair Value, Recurring [Member] | Level 2 [Member] | Investment in Limited Partnerships
Assets:
Investments in limited partnerships	0	0
Fair Value, Recurring [Member] | Level 2 [Member] | Residential Mortgage
Liabilities:
Loans held-for-sale, fair value disclosure, unpaid principal balance	8,800	2,200
Fair Value, Recurring [Member] | Level 2 [Member] | Equity Securities
Assets:
Equity Securities, FV-NI		0
Fair Value, Recurring [Member] | Level 3 [Member]
Assets:
Securities—available-for-sale	25,304	0
Assets, Fair Value Disclosure	39,794	42,037
Liabilities:
Junior subordinated debentures at fair value	66,413	74,857
Financial and Nonfinancial Liabilities, Fair Value Disclosure	66,437	74,899
Fair Value, Recurring [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Interest Rate Contract [Member]
Assets:
Derivatives	275	81
Liabilities:
Derivatives	24	42
Fair Value, Recurring [Member] | Level 3 [Member] | Loan Participations and Assignments
Liabilities:
Derivatives	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | TPS and TRUP CDOs [Member]
Assets:
Trading Securities, Fair Value		28,694
Fair Value, Recurring [Member] | Level 3 [Member] | U.S. Government and agency obligations
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Municipal bonds
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Corporate bonds
Assets:
Securities—available-for-sale	25,304	0
Fair Value, Recurring [Member] | Level 3 [Member] | Mortgage Backed Securities, Other [Member]
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Asset-backed securities
Assets:
Securities—available-for-sale	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Loans [Member]
Assets:
Loans Held-for-sale, Fair Value	0	0
Fair Value, Recurring [Member] | Level 3 [Member] | Securities (Assets) [Member]
Assets:
Equity Securities, FV-NI	0
Fair Value, Recurring [Member] | Level 3 [Member] | SBA Servicing Asset
Assets:
SBA servicing asset	740	835
Fair Value, Recurring [Member] | Level 3 [Member] | Investment in Limited Partnerships
Assets:
Investments in limited partnerships	$ 13,475	12,427
Fair Value, Recurring [Member] | Level 3 [Member] | Equity Securities
Assets:
Equity Securities, FV-NI		$ 0