[Line Items] for Accounting Policies [Table]

No definition available.

Name:	apog_AccountingPoliciesLineItems
Namespace Prefix:	apog_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fiscal Time Period

+ References

No definition available.

+ Details

Name:	apog_FiscalTimePeriod
Namespace Prefix:	apog_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Net Sales Recorded On A Percentage Of Completion Basis

+ References

No definition available.

+ Details

Name:	apog_PercentageOfNetSalesRecordedOnPercentageOfCompletionBasis
Namespace Prefix:	apog_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Performance Period For Percentage Of Completion Contracts

+ References

No definition available.

+ Details

Name:	apog_PerformancePeriodForPercentageOfCompletionContracts
Namespace Prefix:	apog_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Reporting Period Monthly Lag

+ References

No definition available.

+ Details

Name:	apog_ReportingPeriodMonthlyLag
Namespace Prefix:	apog_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

+ Details

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

- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

+ Details

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

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: 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(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: 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(30)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Details

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

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
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:	apog_InitialApplicationPeriodCumulativeEffectTransitionAxis=apog_DifferencebetweenRevenueGuidanceinEffectbeforeandafterTopic606Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
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:

Summary of Significant Accounting Policies and Related Data (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 03, 2018	Mar. 04, 2017	Feb. 27, 2016	Mar. 04, 2018
Accounting Policies [Line Items]
Reporting period monthly lag	2 months
Fiscal time period	P52W	P53W	P52W
Percentage of net sales recorded on a percentage of completion basis	22.00%	26.00%	25.00%
Research and development expense	$ 14,000	$ 8,600	$ 8,000
Retained earnings	373,259	341,996
Cost of Sales
Accounting Policies [Line Items]
Research and development expense	1,500	2,200	2,400
Selling, general and administrative expenses
Accounting Policies [Line Items]
Advertising expense	$ 1,400	$ 1,100	$ 1,200
Minimum
Accounting Policies [Line Items]
Performance Period For Percentage Of Completion Contracts	12 months
Minimum \| Difference between Revenue Guidance in Effect before and after Topic 606 \| ASU 2014-09
Accounting Policies [Line Items]
Retained earnings				$ 3,000
Maximum
Accounting Policies [Line Items]
Performance Period For Percentage Of Completion Contracts	18 months
Maximum \| Difference between Revenue Guidance in Effect before and after Topic 606 \| ASU 2014-09
Accounting Policies [Line Items]
Retained earnings				$ 5,000