Business acquisition in excess indebtedness payment to reduce purchase price.

No definition available.

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- Definition

Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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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- Details

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- Details

Name:	us-gaap_BusinessAcquisitionAxis=ibp_EastCoastInsulatorsIILlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ibp_TrilokIndustriesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EquityInterestIssuedOrIssuableByTypeAxis=us-gaap_CommonStockMember
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=ibp_MikesGarageDoorLlcMember
Namespace Prefix:
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Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands				9 Months Ended
	Nov. 01, 2016	Oct. 29, 2016	Oct. 17, 2016	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Seller obligations in connection with acquisition of businesses				$ 2,849	$ 12,364
Subsequent Event [Member] \| East Coast Insulators II, L.L.C [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition			$ 16,500
Subsequent Event [Member] \| Trilok Industries, Inc [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition		$ 92,100
Seller obligations in connection with acquisition of businesses		1,900
Subsequent Event [Member] \| Trilok Industries, Inc [Member] \| Common Stock [Member]
Subsequent Event [Line Items]
Purchase consideration, value of shares issued		$ 9,200
Purchase consideration, number of shares issued		282,577
Business acquisition in excess indebtedness payment to reduce purchase price.		$ 400
Subsequent Event [Member] \| Mike’s Garage Door, L.L.C [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition	$ 600