FAIR VALUE - Schedule of Carrying Amounts and Estimated Fair Value of Assets And Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial assets:
Marketable securities held to maturity	$ 163,110	$ 162,800
Carrying Amount
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	108,304	71,510
Marketable securities held to maturity	160,980	163,164
Loans, net	1,640,979	1,645,444
Accrued interest receivable	8,245	9,292
Nonmarketable equity securities	14,909	14,937
Cash surrender value of life insurance	26,458	26,301
Financial liabilities:
Deposits	1,962,301	1,871,480
Securities sold under repurchase agreements	11,542	12,228
Accrued interest payable	1,777	1,651
Federal Home Loan Bank advances	50,131	115,136
Subordinated debentures	12,310	12,810
Fair Value
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	108,304	71,510
Marketable securities held to maturity	163,110	162,800
Loans, net	1,630,728	1,630,600
Accrued interest receivable	8,245	9,292
Nonmarketable equity securities	14,909	14,937
Cash surrender value of life insurance	26,458	26,301
Financial liabilities:
Deposits	1,964,067	1,870,632
Securities sold under repurchase agreements	11,542	12,228
Accrued interest payable	1,777	1,651
Federal Home Loan Bank advances	49,338	114,934
Subordinated debentures	10,114	10,724
Fair Value \| Level 1 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	108,304	71,510
Marketable securities held to maturity	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Nonmarketable equity securities	0	0
Cash surrender value of life insurance	0	0
Financial liabilities:
Deposits	1,449,423	1,435,985
Securities sold under repurchase agreements	0	0
Accrued interest payable	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures	0	0
Fair Value \| Level 2 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	0	0
Marketable securities held to maturity	163,110	162,800
Loans, net	0	0
Accrued interest receivable	8,245	9,292
Nonmarketable equity securities	14,909	14,937
Cash surrender value of life insurance	26,458	26,301
Financial liabilities:
Deposits	514,644	434,647
Securities sold under repurchase agreements	11,542	12,228
Accrued interest payable	1,777	1,651
Federal Home Loan Bank advances	49,338	114,934
Subordinated debentures	10,114	10,724
Fair Value \| Level 3 Inputs
Financial assets:
Cash, due from banks, federal funds sold and interest-bearing deposits	0	0
Marketable securities held to maturity	0	0
Loans, net	1,630,728	1,630,600
Accrued interest receivable	0	0
Nonmarketable equity securities	0	0
Cash surrender value of life insurance	0	0
Financial liabilities:
Deposits	0	0
Securities sold under repurchase agreements	0	0
Accrued interest payable	0	0
Federal Home Loan Bank advances	0	0
Subordinated debentures	$ 0	$ 0

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Nonmarketable Equity Securities, Fair Value Disclosure

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Fair value portion of accrued expenses.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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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 of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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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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Fair value portion of securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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-Name Accounting Standards Codification
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