Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 27, 2021	Nov. 28, 2020
Sales and operating income data
Net sales	$ 334,217	$ 313,583	$ 986,020	$ 922,162
Operating income (loss)	17,710	49,750	30,684	79,433
Intersegment eliminations
Sales and operating income data
Net sales	(11,059)	(9,841)	(29,928)	(28,240)
Architectural Framing Systems
Sales and operating income data
Net sales	151,665	136,688	453,476	439,779
Operating income (loss)	10,689	7,218	27,027	26,211
Architectural Glass
Sales and operating income data
Net sales	74,289	84,779	236,693	248,274
Operating income (loss)	(1,277)	10,825	(16,143)	15,306
Architectural Services
Sales and operating income data
Net sales	91,971	76,690	250,657	213,911
Operating income (loss)	9,203	8,558	20,982	20,470
Large-Scale Optical
Sales and operating income data
Net sales	27,351	25,267	75,122	48,438
Operating income (loss)	5,996	26,114	17,326	25,131
Corporate and other
Sales and operating income data
Operating income (loss)	$ (6,901)	$ (2,965)	$ (18,508)	$ (7,685)