Derivative Financial Instruments Fair Value Option (Details) - Mortgage loans held for sale - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Mortgage Banking Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Gain (Loss)	$ 472	$ (313)
Mortgage loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	31,069	28,708
Fair Value	$ 31,530	$ 28,697

Contractual Principal Outstanding Mortgage Loand Held For Sale

No definition available.

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Namespace Prefix:	fult_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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