XML 100 R89.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments and Contingencies - Narrative (Details) lb in Millions, $ in Millions |  | 9 Months Ended
--- | --- | ---
Mar. 31, 2023 supplier lb | Sep. 30, 2025 USD ($) supplier lb
2023 Supply Agreement |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Number of suppliers | supplier | 1 |
Purchase obligation year one (in pounds) | 12.0 |
Purchase obligation year two (in pounds) | 14.4 |
Purchase obligation year three (in pounds) | 17.3 | 12.3
Unrecorded unconditional purchase obligation, pounds purchased |  | 4.3
2025 Supply Agreement |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Purchase obligation year one (in pounds) |  | 8.0
Purchase obligation year two (in pounds) |  | 8.0
Purchase obligation year three (in pounds) |  | 8.0
Unrecorded unconditional purchase obligation, pounds purchased |  | 7.7
Purchase commitment, remaining minimum amount committed | $ |  | $ 10.8
July 2025 Supply Agreement |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Number of suppliers | supplier |  | 1
Purchase obligation year one (in pounds) |  | 40.6
Purchase obligation year two (in pounds) |  | 89.1
Unrecorded unconditional purchase obligation, pounds purchased |  | 23.9
Term of agreement |  | 5 years

X
- Definition Commitments and contingencies disclosure. + References No definition available. + Details
Name: | ibp_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | ibp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase Obligation, Number Of Suppliers + References No definition available. + Details
Name: | ibp_PurchaseObligationNumberOfSuppliers
Namespace Prefix: | ibp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase Obligation, Period Of Agreement + References No definition available. + Details
Name: | ibp_PurchaseObligationPeriodOfAgreement
Namespace Prefix: | ibp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase Obligation, Pounds To Be Purchased, Year One + References No definition available. + Details
Name: | ibp_PurchaseObligationPoundsToBePurchasedYearOne
Namespace Prefix: | ibp_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase Obligation, Pounds To Be Purchased, Year Three + References No definition available. + Details
Name: | ibp_PurchaseObligationPoundsToBePurchasedYearThree
Namespace Prefix: | ibp_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase Obligation, Pounds To Be Purchased, Year Two + References No definition available. + Details
Name: | ibp_PurchaseObligationPoundsToBePurchasedYearTwo
Namespace Prefix: | ibp_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Unrecorded Unconditional Purchase Obligation, Pounds Purchased + References No definition available. + Details
Name: | ibp_UnrecordedUnconditionalPurchaseObligationPoundsPurchased
Namespace Prefix: | ibp_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(25)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_SupplyCommitmentAxis=ibp_A2023SupplyAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SupplyCommitmentAxis=ibp_A2025SupplyAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SupplyCommitmentAxis=ibp_July2025SupplyAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |