FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets
Securities available for sale	$ 663,230	$ 725,837
Level 1
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	0	0
FHLB bank stock	0	0
Net loans	0	0
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	0	0
Financial Liabilities
Non-maturity deposits	0	0
Time deposits	0	0
Other short-term borrowings	0	0
Federal Home Loan Bank advances	0	0
Derivative liabilities	0	0
Level 1 \| Senior subordinated
Financial Liabilities
Subordinated borrowings	0	0
Level 1 \| Junior subordinated
Financial Liabilities
Subordinated borrowings		0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	0	0
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,791	2,156
Financial Liabilities
Non-maturity deposits	1,751,481	1,476,673
Time deposits	932,886	927,577
Other short-term borrowings	44,831	36,171
Federal Home Loan Bank advances	425,989	643,065
Derivative liabilities	(8,102)	0
Level 2 \| Senior subordinated
Financial Liabilities
Subordinated borrowings	59,920	37,973
Level 2 \| Junior subordinated
Financial Liabilities
Subordinated borrowings		3,923
Level 3
Financial Assets
Cash and cash equivalents	0	0
Securities available for sale	0	0
FHLB bank stock	0	0
Net loans	2,634,147	2,415,863
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	59	8
Financial Liabilities
Non-maturity deposits	0	0
Time deposits	0	0
Other short-term borrowings	0	0
Federal Home Loan Bank advances	0	0
Derivative liabilities	(84)	(1,353)
Level 3 \| Senior subordinated
Financial Liabilities
Subordinated borrowings	0	0
Level 3 \| Junior subordinated
Financial Liabilities
Subordinated borrowings		0
Carrying Value
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	2,625,739	2,476,361
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,850	2,164
Financial Liabilities
Non-maturity deposits	1,763,116	1,550,445
Time deposits	932,635	932,793
Other short-term borrowings	44,832	36,211
Federal Home Loan Bank advances	426,564	644,611
Derivative liabilities	(8,186)	(1,353)
Carrying Value \| Senior subordinated
Financial Liabilities
Subordinated borrowings	59,920	37,973
Carrying Value \| Junior subordinated
Financial Liabilities
Subordinated borrowings		5,000
Total Fair Value
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	2,634,147	2,415,863
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,850	2,164
Financial Liabilities
Non-maturity deposits	1,751,481	1,476,673
Time deposits	932,886	927,577
Other short-term borrowings	44,831	36,171
Federal Home Loan Bank advances	425,989	643,065
Derivative liabilities	(8,186)	(1,353)
Total Fair Value \| Senior subordinated
Financial Liabilities
Subordinated borrowings	$ 59,920	37,973
Total Fair Value \| Junior subordinated
Financial Liabilities
Subordinated borrowings		$ 3,923

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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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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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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

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

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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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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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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.

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