Goodwill and Other Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 26, 2022	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	4	2,036
Goodwill, Ending	130,102	130,098
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	82	2,370
Goodwill, Ending	93,181	93,099
Architectural Glass
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	25,322	25,656
Foreign currency translation	(78)	(334)
Goodwill, Ending	25,244	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