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Stock-Based Compensation Narrative (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Periodic Vesting, Number 3frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPeriodicVestingNumber      
Options, Vested in Period, Fair Value $ 2,900,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 $ 2,200,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 $ 2,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1  
Restricted stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
     
Long Term Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock compensation cost 3,300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
     
Weighted average period for recognition 1 year 9 months 29 days      
Long Term Incentive Plan | Stock Options and Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Annual vesting percentage 25.00%frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodicVestingPercentage
/ us-gaap_AwardTypeAxis
= frp_StockOptionsAndRestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
     
Long Term Incentive Plan | Restricted stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock awards granted, weighted average grand date fair value 2,900,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
1,700,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
200,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
 
Restricted stock vested, aggregate fair value 3,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
2,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
2,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
 
Long Term Incentive Plan | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options term 10 years      
Stock options granted weighted average grant date fair value 3,200,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
1,500,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
700,000frp_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodAggregateWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
 
Expected volatility 51.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[1] 45.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[1] 45.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[1]  
Stock option average term        [2]    [2]
Expected dividend payments 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
  0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
Expected dividend rate 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[3] 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[3] 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
[3] 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
Long Term Incentive Plan | Stock Options | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate 1.63%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.77%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.82%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Stock option average term 5 years 6 months [2] 5 years 6 months [2] 5 years 9 months [2]  
Long Term Incentive Plan | Stock Options | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate 2.19%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
1.92%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
1.21%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Stock option average term 6 years 6 months [2] 6 years [2] 6 years [2]  
Long Term Incentive Plan | Common Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Long Term Incentive Plan grants of Common Stock awards available 5,674,277us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Shares available for grant 2,877,285us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Common Stock, Value, Outstanding $ 14.21us-gaap_SharePrice
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Options, Exercisable, Intrinsic Value 2,600,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Options, Outstanding, Intrinsic Value $ 4,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_PlanNameAxis
= frp_LongTermIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
[1] The expected volatility rate is based on the observed historical volatilities of the Company
[2] The 5.5-year, 5.75-year, 6.0-year and 6.5-year expected lives (estimated period of time outstanding) of stock options granted were estimated using the ‘Simplified Method' which utilizes the midpoint between the vesting date and the end of the contractual term. This method was utilized for the stock options due to the lack of historical exercise behavior of the Company's employees.
[3] For all stock options granted during 2012, 2013 and 2014, no dividends are planned to be paid over the contractual term of the stock options resulting in the use of a zero expected dividend rate.