Business Segment Data (Schedule of Certain Segment Data) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 03, 2018	Dec. 02, 2017	Sep. 02, 2017	Jun. 03, 2017	Mar. 04, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Mar. 03, 2018	Mar. 04, 2017	Feb. 27, 2016
Segment Reporting Information [Line Items]
Net sales	$ 353,453	$ 356,506	$ 343,907	$ 272,307	$ 314,126	$ 274,072	$ 278,455	$ 247,880	$ 1,326,173	$ 1,114,533	$ 981,189
Operating Income (Loss)									114,284	122,225	97,393
Depreciation and Amortization									54,843	35,607	31,248
Capital Expenditures									53,196	68,061	42,037
Identifiable Assets	1,022,320				784,658				1,022,320	784,658	657,440
Architectural Glass
Segment Reporting Information [Line Items]
Net sales									384,137	411,881	377,713
Operating Income (Loss)									32,764	44,656	35,504
Depreciation and Amortization									14,525	15,912	14,397
Capital Expenditures									26,228	44,439	17,701
Identifiable Assets	250,407				254,840				250,407	254,840	215,571
Architectural Services
Segment Reporting Information [Line Items]
Net sales									213,757	270,937	245,935
Operating Income (Loss)									10,420	18,494	11,687
Depreciation and Amortization									1,325	1,364	1,274
Capital Expenditures									2,510	1,981	929
Identifiable Assets	53,424				70,875				53,424	70,875	81,574
Architectural Framing Systems
Segment Reporting Information [Line Items]
Net sales									677,198	385,978	308,593
Operating Income (Loss)									59,031	44,768	31,911
Depreciation and Amortization									31,764	12,404	8,019
Capital Expenditures									15,273	14,070	19,166
Identifiable Assets	618,455				359,633				618,455	359,633	193,823
Large-Scale Optical
Segment Reporting Information [Line Items]
Net sales									88,303	89,710	88,541
Operating Income (Loss)									22,000	22,467	22,963
Depreciation and Amortization									4,556	4,785	4,998
Capital Expenditures									3,307	1,510	1,962
Identifiable Assets	58,523				58,198				58,523	58,198	57,369
Intersegment elimination
Segment Reporting Information [Line Items]
Net sales									(37,222)	(43,973)	(39,593)
Corporate and other
Segment Reporting Information [Line Items]
Operating Income (Loss)									(9,931)	(8,160)	(4,672)
Depreciation and Amortization									2,673	1,142	2,560
Capital Expenditures									5,878	6,061	2,279
Identifiable Assets	$ 41,511				$ 41,112				$ 41,511	$ 41,112	$ 109,103