Goodwill and Other Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Dec. 01, 2018	Mar. 03, 2018
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	$ 180,956	$ 101,334
Goodwill acquired		84,162
Goodwill adjustments for purchase accounting	6,267	(5,859)
Foreign currency translation	(1,435)	1,319
Goodwill, Ending	185,788	180,956
Architectural Glass
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	25,971	25,956
Goodwill acquired		0
Goodwill adjustments for purchase accounting	0	0
Foreign currency translation	(325)	15
Goodwill, Ending	25,646	25,971
Architectural Framing Systems
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	143,308	63,701
Goodwill acquired		84,162
Goodwill adjustments for purchase accounting	6,267	(5,859)
Foreign currency translation	(1,110)	1,304
Goodwill, Ending	148,465	143,308
Architectural Services
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	1,120	1,120
Goodwill acquired		0
Goodwill adjustments for purchase accounting	0	0
Foreign currency translation	0	0
Goodwill, Ending	1,120	1,120
Large-Scale Optical
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	10,557	10,557
Goodwill acquired		0
Goodwill adjustments for purchase accounting	0	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.

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