XML 85 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Investments (Unrealized Losses) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Investment securities available for sale:    
Less than 12 months, fair value $ 1,173,274us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue $ 3,104,700us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments 2,203us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss 43,715us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
12 months or more, fair value 832,420us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue 56,830us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments 10,043fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments 1,105fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
Total fair value 2,005,694us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue 3,161,530us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments 12,246us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax 44,820us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
U. S. Treasury    
Investment securities available for sale:    
Less than 12 months, fair value 338,612us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
102,105us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments 151us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
45us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
12 months or more, fair value 1,015us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments 1fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
0fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
Total fair value 339,627us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
102,105us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments 152us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
45us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_USTreasurySecuritiesMember
Government Agency    
Investment securities available for sale:    
Less than 12 months, fair value 261,288us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
780,552us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments 247us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
761us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
12 months or more, fair value 0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
29,969us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments 0fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
31fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
Total fair value 261,288us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
810,521us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments 247us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
792us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_AgencySecuritiesMember
Mortgage Backed Securities, Other [Member]    
Investment securities available for sale:    
Less than 12 months, fair value 573,374us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
2,221,213us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments 1,805us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
42,876us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
12 months or more, fair value 831,405us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
26,861us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments 10,042fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
1,074fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Total fair value 1,404,779us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
2,248,074us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments 11,847us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
43,950us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Other Debt Obligations    
Investment securities available for sale:    
Less than 12 months, fair value   830us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
Available for Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Accumulated In Investments   33us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
12 months or more, fair value   0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
Available For Sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses Acumulated In Investments   0fcnca_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAcumulatedInInvestments
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
Total fair value   830us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments   33us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_OtherDebtSecuritiesMember
State, County and Municipal    
Investment securities available for sale:    
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments $ 0us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
$ 0us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember