XML 85 R71.htm IDEA: XBRL DOCUMENT v3.20.4

Employee Benefits - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) installment shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Healthcare benefit expense, net of employee contributions | $	$ 24,100	$ 21,900	$ 17,800
Accrued compensation | $	45,876	33,636
Administration expense related to employee contribution plan | $	$ 2,200	$ 2,000	$ 1,700
Share-based awards granted (in shares)	200,000	100,000	100,000
Vesting period (in years)	3 years
Share based compensation, recognized tax benefits | $	$ 300	$ 300	$ 500
2014 Omnibus Incentive Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Common stock shares available for issuance (in shares)	2,000,000.0
Common stock shares authorized (in shares)	3,000,000.0
Common Stock
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Number of equal installments | installment	3
Common Stock | 2014 Omnibus Incentive Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Common stock surrendered by employees (in shares)	25,000	45,000	41,000
Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	61,174
Liability Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	7,000
Performance Based Restricted Stock Units
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	14,000,000
Vesting period (in years)	1 year
Directors
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	6,000,000	8,000,000	5,000,000
Vesting period (in years)	1 year
Officer | Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	100,000
Officer | Performance-Based Stock Awards | Common Stock
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Number of equal installments | installment	2
Cost of sales
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Workers' compensation expense | $	$ 15,700	$ 15,400	$ 12,800
Medical IBNR Included in Accrued Compensation
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Accrued compensation | $	$ 3,100	$ 2,600

X

- Definition

Health insurance expense.

+ References

No definition available.

+ Details

Name:	ibp_HealthInsuranceExpense
Namespace Prefix:	ibp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Pension plans, postretirement and other employee benefits.

+ References

No definition available.

+ Details

Name:	ibp_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems
Namespace Prefix:	ibp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of equal installments for vesting restricted stock.

+ References

No definition available.

+ Details

Name:	ibp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEqualInstallmentsForVestingOfStockAwards
Namespace Prefix:	ibp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

All expenses associated with Worker's Compensation Insurance benefits incurred during the period.

+ References

No definition available.

+ Details

Name:	ibp_WorkersCompensationExpense
Namespace Prefix:	ibp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of administrative expense incurred by defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanAdministrativeExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

X

- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PlanNameAxis=ibp_TwoThousandAndFourteenOmnibusIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=ibp_PerformanceBasedAwardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=ibp_LiabilityPerformanceBasedStockAwardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=ibp_PerformanceBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_OfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_DefinedBenefitPostretirementHealthCoverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: