FAIR VALUE - QUANTITATIVE INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value Measurements
Loan servicing rights	$ 1,321	$ 1,277
Non-recurring
Fair Value Measurements
Impaired loans, at fair value	3,900	825
Other real estate owned	1,200	1,500
Loan servicing rights	1,100	87
Non-recurring | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Loan servicing rights	1,083	87
Non-recurring | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Loan servicing rights	1,083	87
Non-recurring | 1-4 family residential | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value	1,685
Non-recurring | 1-4 family residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value	1,685	540
Non-recurring | Multi-family residential | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value		540
Non-recurring | Non-farm & non-residential | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value		285
Non-recurring | Non-farm & non-residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value		285
Non-recurring | Agricultural | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value	2,234
Non-recurring | Agricultural | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value	2,234
Non-recurring | Residential | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Other real estate owned	956	1,504
Non-recurring | Residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Impaired loans, at fair value		$ 1,504
Other real estate owned	956
Non-recurring | Commercial | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Other real estate owned	272
Non-recurring | Commercial | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Other real estate owned	$ 272
Non-recurring | Minimum | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)		10.00%
Non-recurring | Minimum | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Constant prepayment rates (as a percent)	8.00%	8.00%
Non-recurring | Minimum | 1-4 family residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	0.00%	1.00%
Non-recurring | Minimum | Non-farm & non-residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)		23.00%
Non-recurring | Minimum | Agricultural | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	2.00%
Non-recurring | Minimum | Residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	1.00%	10.00%
Non-recurring | Minimum | Commercial | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)	10.00%
Non-recurring | Maximum | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)		10.00%
Non-recurring | Maximum | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Constant prepayment rates (as a percent)	45.00%	21.00%
Non-recurring | Maximum | 1-4 family residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	21.00%	12.00%
Non-recurring | Maximum | Non-farm & non-residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)		31.00%
Non-recurring | Maximum | Agricultural | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	75.00%
Non-recurring | Maximum | Residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	16.00%	28.00%
Non-recurring | Maximum | Commercial | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)	10.00%
Non-recurring | Weighted average | Discounted cash flow | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Constant prepayment rates (as a percent)	13.00%	11.00%
Non-recurring | Weighted average | 1-4 family residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	10.00%	7.00%
Non-recurring | Weighted average | Non-farm & non-residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)		27.00%
Non-recurring | Weighted average | Agricultural | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	9.00%
Non-recurring | Weighted average | Residential | Sales comparison | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
adjustment for differences between the comparable sales (as a percent)	9.00%	19.00%
Non-recurring | Weighted average | Residential | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)		10.00%
Non-recurring | Weighted average | Commercial | Income approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurements
Capitalization rate (as a percent)	10.00%