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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed rate loan commitments, interest rate range, minimum (in hundredths) 2.25%pfbi_FixedRateLoanCommitmentsInterestRateRangeMinimum  
Fixed rate loan commitments, interest rate range, maximum (in hundredths) 21.00%pfbi_FixedRateLoanCommitmentsInterestRateRangeMaximum  
Overdraft Protection [Member]    
Off-balance Sheet Risks, Disclosure Information [Line Items]    
Unused portion of overdraft protection $ 14,128pfbi_UnusedPortionOfOverdraftProtection
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnusedLinesOfCreditMember		 $ 11,723pfbi_UnusedPortionOfOverdraftProtection
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnusedLinesOfCreditMember
Standby letters of credit [Member]    
Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off balance sheet risk, contract amount 7,593us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember		 6,084us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember
Commitments to extend credit - Fixed [Member]    
Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off balance sheet risk, contract amount 19,904us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommitmentsToExtendCreditMember		 12,040us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommitmentsToExtendCreditMember
Commitments to extend credit - Variable [Member]    
Off-balance Sheet Risks, Disclosure Information [Line Items]    
Off balance sheet risk, contract amount $ 60,183us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= pfbi_CommitmentsToExtendCreditVariableMember		 $ 52,576us-gaap_ContractualObligation
/ us-gaap_FinancialInstrumentAxis
= pfbi_CommitmentsToExtendCreditVariableMember