SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2018	Dec. 31, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Total Assets	$ 1,493,424				$ 1,496,193					$ 1,493,424	$ 1,496,193
Net Income	3,769	$ 3,467	$ 3,919	$ 3,664	3,407	$ 3,164	$ 2,624	$ 2,979		14,819	12,174	$ 12,446
Securities [Abstract]
Securities classified as held to maturity	0				$ 0					$ 0	$ 0
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period of non-payment after which a loan is moved to nonaccrual status										90 days
Operating Segments [Abstract]
Number of reportable segments | Segment										1
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Federal income tax rate										35.00%	35.00%	34.00%
Amount reclassed from retained earnings to accumulated other comprehensive income to adjust stranded tax effects										$ 0
Minimum [Member]
Goodwill and Other Intangible Assets [Abstract]
Estimated useful life of acquired intangible assets										8 years
Maximum [Member]
Goodwill and Other Intangible Assets [Abstract]
Estimated useful life of acquired intangible assets										10 years
Retained Earnings [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Income										$ 14,819	$ 12,174	$ 12,446
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amount reclassed from retained earnings to accumulated other comprehensive income to adjust stranded tax effects										367
Accumulated Other Comprehensive Income [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Income										0	$ 0	$ 0
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amount reclassed from retained earnings to accumulated other comprehensive income to adjust stranded tax effects										$ (367)
Plan [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Federal income tax rate									21.00%
Premises [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Useful Life										7 years
Premises [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Useful Life										40 years
Equipment [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Useful Life										3 years
Equipment [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Useful Life										15 years
Citizens Deposit Bank & Trust [Member] | Vanceburg, Kentucky [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Year Acquired										1991
Total Assets	422,849									$ 422,849
Net Income										$ 4,500
Premier Bank, Inc. [Member] | Huntington, West Virginia [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Year Acquired										1998
Total Assets	1,064,094									$ 1,064,094
Net Income										12,137
Parent and Intercompany Eliminations [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Total Assets	$ 6,481									6,481
Net Income										$ (1,818)
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Delinquent period after which interest income is discontinued on mortgage and loans										90 days
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due period after which consumer loans are charged off										120 days