FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying values and fair value (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Accrued interest receivable	$ 25,061	$ 16,346
Liabilities
Trust preferred debentures	48,682	48,288
Accrued interest payable	4,051	6,400
Level 1
Assets
Cash and due from banks	459,473	392,694
Federal funds sold	1,723	1,811
Nonmarketable equity securities	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term borrowings	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Trust preferred debentures	0	0
Accrued interest payable	0	0
Level 2
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Nonmarketable equity securities	50,765	44,505
Loans, net	0	0
Accrued interest receivable	25,061	16,346
Liabilities
Deposits	5,038,033	4,548,327
Short-term borrowings	58,625	82,029
FHLB and other borrowings	729,192	506,832
Subordinated debt	175,392	182,189
Trust preferred debentures	49,245	53,811
Accrued interest payable	4,051	6,400
Level 3
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Nonmarketable equity securities	0	0
Loans, net	4,954,066	4,385,768
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term borrowings	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Trust preferred debentures	0	0
Accrued interest payable		0
Carrying value
Assets
Cash and due from banks	459,473	392,694
Federal funds sold	1,723	1,811
Nonmarketable equity securities	50,765	44,505
Loans, net	4,888,695	4,373,382
Accrued interest receivable	25,061	16,346
Liabilities
Deposits	5,028,736	4,544,254
Short-term borrowings	58,625	82,029
FHLB and other borrowings	693,640	493,311
Subordinated debt	169,702	176,653
Trust preferred debentures	48,682	48,288
Accrued interest payable	4,051	6,400
Fair value
Assets
Cash and due from banks	459,473	392,694
Federal funds sold	1,723	1,811
Nonmarketable equity securities	50,765	44,505
Loans, net	4,954,066	4,385,768
Accrued interest receivable	25,061	16,346
Liabilities
Deposits	5,038,033	4,548,327
Short-term borrowings	58,625	82,029
FHLB and other borrowings	729,192	506,832
Subordinated debt	175,392	182,189
Trust preferred debentures	49,245	53,811
Accrued interest payable	$ 4,051	$ 6,400

Fair value of investments classified as non marketable equity securities.

No definition available.

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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- Definition

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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- Definition

Fair value portion of federal funds sold and securities borrowed or purchased under agreements to resell.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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