Goodwill and Other Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
May 29, 2021	Feb. 27, 2021
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	$ 130,098	$ 185,516
Adjustment (1)		6,315
Impairment expense		(63,769)
Foreign currency translation	1,363	2,036
Goodwill, Ending	131,461	130,098
EFCO
Schedule of goodwill attributable to each business segment
Impairment expense		(46,700)
Sotawall
Schedule of goodwill attributable to each business segment
Impairment expense		(17,100)
Architectural Framing Systems
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	93,099	148,183
Adjustment (1)		6,315
Impairment expense		(63,769)
Foreign currency translation	1,457	2,370
Goodwill, Ending	94,556	93,099
Architectural Glass
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	25,322	25,656
Foreign currency translation	(94)	(334)
Goodwill, Ending	25,228	25,322
Architectural Services
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	1,120	1,120
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
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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