Goodwill and Other Identifiable Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2015	Mar. 01, 2014
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	$ 78,021us-gaap_Goodwill	$ 61,342us-gaap_Goodwill
Goodwill, Acquired During Period		18,254us-gaap_GoodwillAcquiredDuringPeriod
Foreign currency translation	(2,164)us-gaap_GoodwillTranslationAdjustments	(1,575)us-gaap_GoodwillTranslationAdjustments
Goodwill, Ending	75,857us-gaap_Goodwill	78,021us-gaap_Goodwill
Architectural Glass
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	26,628	27,002
Goodwill, Acquired During Period		0
Foreign currency translation	(273)	(374)
Goodwill, Ending	26,355	26,628
Architectural Services
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	1,120	1,120
Goodwill, Acquired During Period		0
Foreign currency translation	0	0
Goodwill, Ending	1,120	1,120
Architectural Framing Systems
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	39,716	22,663
Goodwill, Acquired During Period		18,254
Foreign currency translation	(1,891)	(1,201)
Goodwill, Ending	37,825	39,716
Large-Scale Optical
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	10,557	10,557
Goodwill, Acquired During Period		0
Foreign currency translation	0	0
Goodwill, Ending	$ 10,557	$ 10,557

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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