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FAIR VALUES OF FINANCIAL INSTRUMENTS: (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Carrying amount and estimated fair value of financial instruments    
Gain On Sale Of Securities Net $ 39 $ 23
Valuation allowance for impaired loans 331 1,159
Provision for impaired loan losses 523 271
Other Real Estate Commercial loan | Level 3    
Carrying amount and estimated fair value of financial instruments    
Fair Value 2,000 2,800
Other Real Estate Residential Loan | Level 3    
Carrying amount and estimated fair value of financial instruments    
Fair Value 483 655
Impaired Loans | Level 3    
Carrying amount and estimated fair value of financial instruments    
Fair Value 1,387 2,352
Valuation allowance for impaired loans 300 1,200
Other Real Estate | Level 3    
Carrying amount and estimated fair value of financial instruments    
Fair Value 2,531 3,466
Assets fair value adjustment increase (decrease) $ (930) $ (743)
Minimum    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 0.00%  
Minimum | Impaired Loans    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 0.00% 0.00%
Minimum | Other Real Estate    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 5.00% 5.00%
Maximum    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 50.00%  
Maximum | Impaired Loans    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 50.00% 50.00%
Maximum | Other Real Estate    
Carrying amount and estimated fair value of financial instruments    
Fair Value Inputs, Discount Rate 20.00% 20.00%