Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Foreign Currency Open Position	$ 500,000fult_ForeignCurrencyOpenPosition
Derivative, Fair Value, Net	2,079	160
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset (Liability) Fair Value	2,507	1,385
Interest Rate Lock Commitments [Member] \| Positive Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	151,389	89,655
Asset, Fair Value	2,509	1,391
Interest Rate Lock Commitments [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	187	301
Liability, Fair Value	(2)	(6)
Forward Commitments [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	144,370	93,802
Liability, Fair Value	(610)	(1,164)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Asset (Liability) Fair Value	28,922	19,518
Interest Rate Swap with Customer [Member] \| Positive Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	535,786	468,080
Asset, Fair Value	29,035	19,716
Interest Rate Swap with Customer [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	8,000	25,418
Liability, Fair Value	(113)	(198)
Interest Rate Swap with Counterparty [Member]
Derivative [Line Items]
Asset (Liability) Fair Value	(28,922)	(19,518)
Interest Rate Swap with Counterparty [Member] \| Positive Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	8,000	25,418
Asset, Fair Value	113	198
Interest Rate Swap with Counterparty [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	535,786	468,080
Liability, Fair Value	(29,035)	(19,716)
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	936	369
Foreign Exchange Contracts With Customer [Member] \| Positive Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	12,642	11,616
Foreign Currency Contract, Asset, Fair Value Disclosure	1,411	810
Foreign Exchange Contracts With Customer [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	7,033	5,250
Foreign Currency Contracts, Liability, Fair Value Disclosure	(475)	(441)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	(754)	(430)
Foreign Exchange Contracts With Correspondent Banks [Member] \| Positive Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	8,053	5,287
Foreign Currency Contract, Asset, Fair Value Disclosure	952	446
Foreign Exchange Contracts With Correspondent Banks [Member] \| Negative Fair Values [Member]
Derivative [Line Items]
Derivative, Notional Amount	14,825	13,572
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ (1,706)	$ (876)

TotalopenforeigncurrencypositionperCorporatepolicy.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ 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 (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

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