Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 27, 2022	Aug. 28, 2021
Sales and operating income data
Net sales	$ 372,109	$ 325,797	$ 728,744	$ 651,803
Operating income (loss)	32,072	(3,068)	65,288	12,973
Intersegment eliminations
Sales and operating income data
Net sales	(10,008)	(10,462)	(21,480)	(19,215)
Architectural Framing Systems
Sales and operating income data
Net sales	172,867	136,973	336,159	273,741
Operating income (loss)	20,512	8,381	44,177	16,752
Architectural Services
Sales and operating income data
Net sales	106,732	96,370	210,120	187,102
Operating income (loss)	5,490	7,139	8,417	11,365
Architectural Glass
Sales and operating income data
Net sales	77,352	79,373	153,617	162,404
Operating income (loss)	6,457	(16,995)	11,626	(14,867)
Large-Scale Optical
Sales and operating income data
Net sales	25,166	23,543	50,328	47,771
Operating income (loss)	5,991	5,483	12,489	11,330
Corporate and other
Sales and operating income data
Operating income (loss)	$ (6,378)	$ (7,076)	$ (11,421)	$ (11,607)