Period of time between issuance and earliest call date of debt instrument.

No definition available.

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- Definition

Debt Instrument, Interest Payment Deferral Term, Earliest

+ References

No definition available.

+ Details

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- Definition

The minimum amortization period for Federal Home Loan Bank advances.

+ References

No definition available.

+ Details

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- Definition

The maximum amortization period for Federal Home Loan Bank advances.

+ References

No definition available.

+ Details

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- Definition

Long-Term Debt, Excluded From Tier 1 Regulatory Capital Requirements, Percentage

+ References

No definition available.

+ Details

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- 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

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22 (b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 13
-Subparagraph 3(a)
-Article 9

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

States the weighted average interest rate applicable to the advances from the Federal Home Loan Bank outstanding as of the Balance Sheet date.

+ References

+ Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Name Regulation S-X (SX)
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-Article 9

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-Name Regulation S-X (SX)
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-Paragraph 20, 22
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 7

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt (Detail) - USD ($) $ in Thousands	12 Months Ended
Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument
Long-term debt		$ 340,447	$ 403,254
IBERIABANK
Debt Instrument
Long-term debt		$ 220,337	$ 291,392
IBERIABANK \| Federal Home Loan Bank Notes
Debt Instrument
FHLB advance amortization period (in years, minimum)		2 years 6 months
FHLB advance amortization period (in years, maximum)		20 years
Weighted average advance rate on FHLB advances		3.79%	3.24%
Long-term debt		$ 136,628	$ 210,549
IBERIABANK \| Federal Home Loan Bank Notes \| Blanket Floating Lien
Debt Instrument
Additional advances available from FHLB		4,600,000
IBERIABANK \| Federal Home Loan Bank Notes \| Pledge of Investment Securities
Debt Instrument
Additional advances available from FHLB		1,200,000
IBERIABANK Corporation \| Junior Subordinated Debt
Debt Instrument
Long-term debt		$ 120,110	$ 111,862
Debt Instrument term (in years)		30 years
Earliest call date after issue (in years)		5 years
Earliest interest payment deferral date (in years or 20 consecutive quarters)		5 years
Percent of subordinate debt excluded from Tier 1 regulatory capital requirements, Percentage		75.00%
Forecast \| IBERIABANK Corporation \| Junior Subordinated Debt
Debt Instrument
Percent of subordinate debt excluded from Tier 1 regulatory capital requirements, Percentage	25.00%