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Summary of Significant Accounting Policies and Related Data Inventory Adjustment (Details) (USD $) In Thousands, unless otherwise specified | Feb. 28, 2015 | Mar. 01, 2014
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Inventory, Net | $ 61,408 us-gaap_InventoryNet | $ 53,435 us-gaap_InventoryNet | [1]
Deferred Tax Assets, Net of Valuation Allowance, Current | 1,359 us-gaap_DeferredTaxAssetsNetCurrent | 2,714 us-gaap_DeferredTaxAssetsNetCurrent |
Deferred Tax Liabilities, Net, Noncurrent | 10,652 us-gaap_DeferredTaxLiabilitiesNoncurrent | 8,567 us-gaap_DeferredTaxLiabilitiesNoncurrent |
Retained Earnings (Accumulated Deficit) | 256,538 us-gaap_RetainedEarningsAccumulatedDeficit | 228,841 us-gaap_RetainedEarningsAccumulatedDeficit |
Scenario, Previously Reported [Member] |  |  |
Inventory, Net |  | 47,982 us-gaap_InventoryNet / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |
Deferred Tax Assets, Net of Valuation Allowance, Current |  | 3,529 us-gaap_DeferredTaxAssetsNetCurrent / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |
Deferred Tax Liabilities, Net, Noncurrent |  | 7,403 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |
Retained Earnings (Accumulated Deficit) |  | 225,367 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |
Scenario, Adjustment [Member] | LIFO to FIFO Adjustment [Member] |  |  |
Inventory, Net |  | 5,453 us-gaap_InventoryNet / us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis = apog_LifoToFifoAdjustmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioAdjustmentMember |
Deferred Tax Assets, Net of Valuation Allowance, Current |  | (815)us-gaap_DeferredTaxAssetsNetCurrent / us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis = apog_LifoToFifoAdjustmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioAdjustmentMember |
Deferred Tax Liabilities, Net, Noncurrent |  | 1,164 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis = apog_LifoToFifoAdjustmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioAdjustmentMember |
Retained Earnings (Accumulated Deficit) |  | $ 3,474 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis = apog_LifoToFifoAdjustmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioAdjustmentMember |
[1] | During the fourth quarter of fiscal 2015, the Company changed its method of accounting for those inventories which were accounted for under the LIFO method to the FIFO method. See Note 1 for discussion of this accounting change and its related impact.

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31928-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31958-109318 + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + 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 210.5-02.6(a)) -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 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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