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STOCKHOLDERS' EQUITY AND REGULATORY MATTERS (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
STOCKHOLDERS' EQUITY AND REGULATORY MATTERS [Abstract]    
Number of previous years retained profit taken for dividend calculation 2 years  
Funds available for dividends without prior approval $ 5.5us-gaap_AmountAvailableForDividendDistributionWithoutAffectingCapitalAdequacyRequirements  
Common Equity Tier I Capital (to Risk-Weighted Assets) (in hundredths) 13.20%pfbi_TierOneRiskBasedCommonEquityToRiskWeightedAssets  
Common Equity Tier I Capital (to Risk-Weighted Assets), Regulatory Minimum Requirements (in hundredths) 4.50%pfbi_TierOneRiskBasedCommonEquityRequiredForCapitalAdequacyToRiskWeightedAssets  
Common Equity Tier I Capital (to Risk-Weighted Assets), To Be Considered Well Capitalized (in hundredths) 6.50%pfbi_TierOneRiskBasedCommonEquityRequiredToBeWellCapitalizedToRiskWeightedAssets  
Tier I Capital (to Risk-Weighted Assets) (in hundredths) 13.20%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets 13.30%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
Tier I Capital (to Risk-Weighted Assets), Regulatory Minimum Requirements (in hundredths) 6.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets [1]  
Tier I Capital (to Risk-Weighted Assets), To Be Considered Well Capitalized (in hundredths) 8.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets [1]  
Total Capital (to Risk-Weighted Assets) (in hundredths) 14.40%us-gaap_CapitalToRiskWeightedAssets 14.60%us-gaap_CapitalToRiskWeightedAssets
Total Capital (to Risk-Weighted Assets), Regulatory Minimum Requirements (in hundredths) 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets  
Total Capital (to Risk-Weighted Assets), To Be Considered Well Capitalized (in hundredths) 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets  
Tier I Capital (to Average Assets) (in hundredths) 9.40%us-gaap_TierOneLeverageCapitalToAverageAssets 9.10%us-gaap_TierOneLeverageCapitalToAverageAssets
Tier I Capital (to Average Assets), Regulatory Minimum Requirements (in hundredths) 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets  
Tier I Capital (to Average Assets), To Be Considered Well Capitalized (in hundredths) 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets  
[1] The regulatory requirements presented in the table are effective as of January 1, 2015. At December 31, 2014, the minimum Tier 1 capital to risk-weighted assets ratio was 4.0% and to be considered well capitalized the ratio was required to be at least 6.0%.