Goodwill and Other Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 04, 2017	Feb. 27, 2016
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	$ 73,996	$ 75,857
Goodwill acquired	27,444
Foreign currency translation	(106)	(1,861)
Goodwill, Ending	101,334	73,996
Architectural Glass
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	25,639	26,355
Goodwill acquired	0
Foreign currency translation	317	(716)
Goodwill, Ending	25,956	25,639
Architectural Services
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	1,120	1,120
Goodwill acquired	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	36,680	37,825
Goodwill acquired	27,444
Foreign currency translation	(423)	(1,145)
Goodwill, Ending	63,701	36,680
Large-Scale Optical
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	10,557	10,557
Goodwill acquired	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
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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