Additional commitments under revolving line of credit or term loan.

No definition available.

Name:	ibp_AdditionalCommitmentsUnderRevolvingLineOfCreditOrTermLoan
Namespace Prefix:	ibp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt instrument covenant leverage ratio.

+ References

No definition available.

+ Details

Name:	ibp_DebtInstrumentCovenantLeverageRatio
Namespace Prefix:	ibp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Fixed Charge Coverage Ratio Covenant

+ References

No definition available.

+ Details

Name:	ibp_DebtInstrumentFixedChargeCoverageRatioCovenant
Namespace Prefix:	ibp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility Additional Interest Rate

+ References

No definition available.

+ Details

Name:	ibp_LineOfCreditFacilityAdditionalInterestRate
Namespace Prefix:	ibp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility ticking fee percentage.

+ References

No definition available.

+ Details

Name:	ibp_LineOfCreditFacilityTickingFeePercentage
Namespace Prefix:	ibp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of capital stock or other equity interest pledged per credit agreement.

+ References

No definition available.

+ Details

Name:	ibp_PercentageOfCapitalStockOrOtherEquityInterestPledgedPerCreditAgreement
Namespace Prefix:	ibp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735

+ Details

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

- Definition

The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

+ Details

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

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- 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

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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

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

Reference 3: 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

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_MasterLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ibp_CreditAndSecurityAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_Period1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_FutureYearPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_FutureYearPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_FutureYearPeriodThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_FutureYearPeriodFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=ibp_ThereafterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_SeniorSecuredCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=ibp_FuturePeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_DelayedDrawTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_SwingLinesLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ibp_TermLoanAndDelayedDrawTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-term Debt - Additional Information (Detail) - USD ($)		12 Months Ended
	Feb. 29, 2016	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Assets relating to master loan agreements, Gross		$ 64,200,000	$ 64,900,000
Capital leased assets, net book value		$ 16,400,000	22,100,000
Master Loan Agreements [Member]
Debt Instrument [Line Items]
Payment Period, typical		60 months
Assets relating to master loan agreements, Gross		$ 48,700,000	25,400,000
Capital leased assets, net book value		38,000,000	$ 22,400,000
Credit and Security Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 325,000,000
Issuance of letters of credit		$ 17,900,000
Principal amount of term loans or additional revolving credit commitments	$ 75,000,000
Percentage of capital stock or other equity interest pledged per credit agreement	100.00%
Credit facility, covenant terms		The Credit and Security Agreement contains covenants that require us to (1) maintain a fixed charge coverage ratio of not less than 1.10 to 1.00 and (2) maintain a leverage ratio of no greater than (a) 3.50 to 1.00 through December 30, 2016; (b) 3.25 to 1.00 on December 31, 2016 through June 29, 2017; (c) 3.00 to 1.00 on June 30, 2017 through December 30, 2017; (d) 2.75 to 1.00 on December 31, 2017 through June 29, 2018; and (e) 2.50 to 1.00 on June 30, 2018 and thereafter.
Credit facility, interest rate description		The Credit and Security Agreement also contains various restrictive non-financialcovenants and a provision that, upon an event of default (as defined by the Credit and Security Agreement), amounts outstanding under the Credit and Security Agreement would bear interest at the rate as determined above plus 2.0% per annum.
Contingent interest rate increase	2.00%
Credit and Security Agreement [Member] \| Minimum [Member] \| Through the First Quarter Ending June 30, 2016 [Member]
Debt Instrument [Line Items]
Fixed coverage ratio, covenants requirements	110.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| Through December 30, 2016 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	350.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| December 31, 2016 Through June 29, 2017 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	325.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| June 30, 2017 Through December 30, 2017 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	300.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| December 31, 2017 Through June 29, 2018 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	275.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| June 30, 2018 and Thereafter [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	250.00%
Credit and Security Agreement [Member] \| Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Credit facility term	5 years
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity	$ 100,000,000
Issuance of letters of credit	$ 20,000,000
Line of credit outstanding		$ 0
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| February 29, 2016 Through August 31, 2016 [Member]
Debt Instrument [Line Items]
Commitment fee	0.225%
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fee	0.20%
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fee	0.30%
Credit and Security Agreement [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 100,000,000
Credit and Security Agreement [Member] \| Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Margin interest rate percentage		2.50%	1.95%
Interest rate terms		1-month LIBOR
Credit and Security Agreement [Member] \| Delayed Draw Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 125,000,000
Ticking fee	0.375%
Maturity date	Feb. 28, 2017
Credit and Security Agreement [Member] \| Delayed Draw Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Margin interest rate percentage			1.95%
Interest rate terms		1-month LIBOR
Credit and Security Agreement [Member] \| Swing Lines Loan [Member]
Debt Instrument [Line Items]
Issuance of letters of credit	$ 5,000,000
Credit and Security Agreement [Member] \| Term Loan And Delayed Draw Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Maturity date	Feb. 28, 2021