ACQUISITION OF MADISON FINANCIAL CORPORATION (Details) - USD ($) $ in Thousands	Jul. 24, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ACQUISITION
Total assets	$ 116,065
Total purchase price net of capital stock issuance cost	7,939
Preliminary valuation of the fair value of tangible and intangible assets acquired and liabilities assumed
Cash and cash equivalents	3,517
Interest-bearing deposits in other financial institutions	2,979
Securities available for sale	27,704
Loans	77,729
Federal Home Loan Bank Stock	1,053
Accrued interest receivable	309
Premises and equipment	789
Other real estate	445
Deferred tax assets	624
Core deposit intangible asset	800
Other assets	116
Total assets acquired	116,065
Deposits	95,823
Other borrowings	6,245
Accrued interest payable	59
Other liabilities	817
Total liabilities assumed	102,944
Liquidation amount of preferred stock including unpaid dividends and interest	6,066
Total identifiable net assets	7,055
Goodwill	884	$ 14,001	$ 14,001	$ 14,001	$ 13,117
Total purchase price net of capital stock issuance cost	7,939
Madison Financial Corp
ACQUISITION
Total assets	116,100
Payment for fractional shares	$ 3
Share issuance	263,361
Value assigned	$ 7,900
Transaction and integration costs	858
Preliminary valuation of the fair value of tangible and intangible assets acquired and liabilities assumed
Total assets acquired	116,100
Goodwill	$ 884