Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE, Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Previously Presented (Details)

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FAIR VALUE, Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Previously Presented (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Financial assets [Abstract]    
Cash and due from banks $ 26,954 $ 34,945
Securities held to maturity 90,536 86,452
Bank owned life insurance 40,494 40,243
Carrying Amount [Member]    
Financial assets [Abstract]    
FHLB stock 11,558 11,558
Loan Commitments [Member] | Carrying Amount [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off-balance sheet credit-related items 0 0
Loan Commitments [Member] | Fair Value [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off-balance sheet credit-related items 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Carrying Amount [Member]    
Financial assets [Abstract]    
Cash and due from banks 26,954 34,945
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]    
Financial assets [Abstract]    
Cash and due from banks 26,954 34,945
Significant Other Observable Inputs (Level 2) [Member] | Carrying Amount [Member]    
Financial assets [Abstract]    
Cash equivalents 103,898 126,522
Loans, net 1,306,337 1,301,431
Accrued interest receivable 5,200 4,680
Financial liabilities [Abstract]    
Deposits (1,560,872) (1,579,010)
Other borrowed funds (80,667) (92,118)
Long-term debt (41,238) (41,238)
Accrued interest payable (613) (604)
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]    
Financial assets [Abstract]    
Cash equivalents 103,898 126,522
Loans, net 1,311,146 1,296,633
Accrued interest receivable 5,200 4,680
Financial liabilities [Abstract]    
Deposits (1,560,808) (1,579,016)
Other borrowed funds (79,567) (91,313)
Long-term debt (36,847) (36,546)
Accrued interest payable (613) (604)
Significant Unobservable Inputs (Level 3) [Member] | Carrying Amount [Member]    
Financial assets [Abstract]    
Securities held to maturity 90,513 85,827
Bank owned life insurance 40,494 40,243
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]    
Financial assets [Abstract]    
Securities held to maturity 90,536 86,452
Bank owned life insurance $ 40,494 $ 40,243