XML 84 R72.htm IDEA: XBRL DOCUMENT v3.10.0.1

Subsequent Events - Additional Information (Detail)		6 Months Ended
	Jul. 16, 2018 USD ($)	Jun. 30, 2018 USD ($)
Term Loan [Member]
Subsequent Event [Line Items]
Debt instrument, face amount		$ 100,000,000
Term Loan extension period		1 year
Number of swaps		4
Term Loan [Member] | Designated as Hedging Instrument [Member]
Subsequent Event [Line Items]
Debt instrument, face amount		$ 200,000,000
Seven Year Interest Rate Swap [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Notional amount beginning date	Jul. 06, 2018
Notional amount of derivative instruments	$ 100,000,000
Notional amount amortized	$ 93,300,000
Notional amount maturity date	Apr. 15, 2025
Forward Interest Rate Swaps [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Notional amount beginning date	May 31, 2022
Notional amount of derivative instruments	$ 100,000,000
Notional amount amortized	$ 97.0
Notional amount maturity date	Apr. 15, 2025

X

- Definition

Debt instrument extension term.

+ References

No definition available.

+ Details

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Namespace Prefix:	ibp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Derivative amortizing notional amount.

+ References

No definition available.

+ Details

Name:	ibp_DerivativeAmortizingNotionalAmount
Namespace Prefix:	ibp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Number Of Swaps

+ References

No definition available.

+ Details

Name:	ibp_NumberOfSwaps
Namespace Prefix:	ibp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- 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

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

X

- Definition

Date the entity entered into the derivative contract, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=ibp_SevenYearInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
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Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: