XML 67 R114.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value of Financial Instruments (Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	14.15%us-gaap_FairValueInputsDiscountRate
Collateralized Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	25,339us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember
Significant Unoservable Inputs	Discount Rate
Valuation Technique	Discounted Cash Flow
Collateralized Debt Obligations [Member] | Unobservable Input - Discount Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring			17,538us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputDiscountRateMember
Fair Value Inputs, Discount Rate			17.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputDiscountRateMember
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	(199)us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember
Significant Unoservable Inputs	Reuters Third Party Market Quote
Valuation Technique	Discounted Cash Flow
Fair Value Inputs, Comparability Adjustments	99.90%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember
Interest Rate Swap [Member] | Unobservable Input - Reuters Third Party Market Quote [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring			(457)us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputReutersThirdPartyMarketQuoteMember
Fair Value Inputs, Comparability Adjustments			99.90%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputReutersThirdPartyMarketQuoteMember
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	9,122us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember		8,613us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember
Significant Unoservable Inputs	Marketability Discount
Valuation Technique	Market Comparable Properties
Fair Value Inputs, Comparability Adjustments	10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember	[1]
Impaired Loans [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring			8,613us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember
Fair Value Inputs, Comparability Adjustments			10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember	[1]
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	2,511us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember		5,591us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember
Significant Unoservable Inputs	Marketability Discount
Valuation Technique	Market Comparable Properties
Other Real Estate Owned [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring			5,591us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	9,122us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member		8,613us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	2,511us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member		$ 5,591us-gaap_AssetsFairValueDisclosureNonrecurring / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Minimum [Member] | Collateralized Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	5.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Minimum [Member] | Collateralized Debt Obligations [Member] | Unobservable Input - Discount Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate			6.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputDiscountRateMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Minimum [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments	10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_RangeAxis = us-gaap_MinimumMember	[1]
Minimum [Member] | Other Real Estate Owned [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments			5.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember / us-gaap_RangeAxis = us-gaap_MinimumMember	[1]
Maximum [Member] | Collateralized Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	12.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Maximum [Member] | Collateralized Debt Obligations [Member] | Unobservable Input - Discount Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate			18.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CollateralizedDebtObligationsMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputDiscountRateMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Maximum [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments	15.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_RangeAxis = us-gaap_MaximumMember	[1]
Maximum [Member] | Other Real Estate Owned [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments			10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember / us-gaap_RangeAxis = us-gaap_MaximumMember	[1]
Weighted Average [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments	99.90%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
Weighted Average [Member] | Interest Rate Swap [Member] | Unobservable Input - Reuters Third Party Market Quote [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments			99.90%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = us-gaap_InterestRateSwapMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputReutersThirdPartyMarketQuoteMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
Weighted Average [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments	10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
Weighted Average [Member] | Impaired Loans [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments			10.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_ImpairedLoansMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments	11.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
Weighted Average [Member] | Other Real Estate Owned [Member] | Unobservable Input - Marketability Discount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Comparability Adjustments			9.00%us-gaap_FairValueInputsComparabilityAdjustments / us-gaap_FairValueByAssetClassAxis = func_OtherRealEstateOwnedMember / us-gaap_FairValueByMeasurementBasisAxis = func_UnobservableInputMarketabilityDiscountMember / us-gaap_RangeAxis = us-gaap_WeightedAverageMember
[1] Range would include discounts taken since appraisal and estimated values

X

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureRecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueInputsComparabilityAdjustments
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueInputsDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Description of significant assumptions used by management to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611

+ Details

Name:	us-gaap_FairValueMeasurementsSignificantAssumptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementsValuationTechniques
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=func_ImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=func_OtherRealEstateOwnedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_CollateralizedDebtObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: