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BASIS OF PRESENTATION (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Consolidation, Wholly Owned Subsidiaries [Line Items]      
Total Assets $ 1,274,106us-gaap_Assets   $ 1,252,824us-gaap_Assets
Net Income 3,142us-gaap_NetIncomeLoss 3,670us-gaap_NetIncomeLoss  
Citizens Deposit Bank & Trust [Member] | Vanceburg, Kentucky [Member]      
Consolidation, Wholly Owned Subsidiaries [Line Items]      
Year Acquired 1991    
Total Assets 388,304us-gaap_Assets
/ dei_EntityByLocationAxis
= pfbi_VanceburgKentuckyMember
/ dei_LegalEntityAxis
= pfbi_CitizensDepositBankTrustMember
   
Net Income 1,014us-gaap_NetIncomeLoss
/ dei_EntityByLocationAxis
= pfbi_VanceburgKentuckyMember
/ dei_LegalEntityAxis
= pfbi_CitizensDepositBankTrustMember
   
Premier Bank, Inc. [Member] | Huntington, West Virginia [Member]      
Consolidation, Wholly Owned Subsidiaries [Line Items]      
Year Acquired 1998    
Total Assets 880,024us-gaap_Assets
/ dei_EntityByLocationAxis
= pfbi_HuntingtonWestVirginiaMember
/ dei_LegalEntityAxis
= pfbi_PremierBankIncMember
   
Net Income 2,573us-gaap_NetIncomeLoss
/ dei_EntityByLocationAxis
= pfbi_HuntingtonWestVirginiaMember
/ dei_LegalEntityAxis
= pfbi_PremierBankIncMember
   
Parent and Intercompany Eliminations [Member]      
Consolidation, Wholly Owned Subsidiaries [Line Items]      
Total Assets 5,778us-gaap_Assets
/ dei_LegalEntityAxis
= pfbi_ParentAndIntercompanyEliminationsMember
   
Net Income $ (445)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= pfbi_ParentAndIntercompanyEliminationsMember