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Segment Information (Tables)
 9 Months Ended
Dec. 02, 2017
Segment Reporting [Abstract]  
Sales and operating income data
 
Three Months Ended
 
Nine Months Ended
(In thousands)
December 2, 2017
 
November 26, 2016
 
December 2, 2017
 
November 26, 2016
Net sales from operations
 
 
 
 
 
 
 
Architectural Framing Systems
$
194,157

 
$
90,850

 
$
493,672

 
$
264,212

Architectural Glass
96,940

 
107,002

 
292,026

 
299,567

Architectural Services
49,077

 
64,380

 
146,056

 
204,934

Large-Scale Optical
26,003

 
22,084

 
64,897

 
63,382

Intersegment eliminations
(9,671
)
 
(10,244
)
 
(23,930
)
 
(31,688
)
Net sales
$
356,506

 
$
274,072

 
$
972,721

 
$
800,407

Operating income (loss) from operations
 
 
 
 
 
 
 
Architectural Framing Systems
$
18,452

 
$
11,838

 
$
46,958

 
$
35,070

Architectural Glass
9,107

 
11,708

 
28,687

 
30,855

Architectural Services
2,547

 
4,918

 
4,102

 
14,336

Large-Scale Optical
6,724

 
5,910

 
15,022

 
15,613

Corporate and other
(2,295
)
 
(1,115
)
 
(8,354
)
 
(3,317
)
Operating income
$
34,535

 
$
33,259

 
$
86,415

 
$
92,557