Goodwill and Other Identifiable Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Aug. 30, 2014	Mar. 01, 2014
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	$ 78,021	$ 61,342
Goodwill, Acquired During Period		18,254
Foreign currency translation	573	(1,575)
Goodwill, Ending	78,594	78,021
Architectural Glass [Member]
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	26,628	27,002
Goodwill, Acquired During Period		0
Foreign currency translation	175	(374)
Goodwill, Ending	26,803	26,628
Architectural Services segment [Member]
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	1,120	1,120
Goodwill, Acquired During Period		0
Foreign currency translation	0	0
Goodwill, Ending	1,120	1,120
Architectural Framing Systems Segment [Member]
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	39,716	22,663
Goodwill, Acquired During Period		18,254
Foreign currency translation	398	(1,201)
Goodwill, Ending	40,114	39,716
Large-Scale Optical [Member]
Schedule of goodwill attributable to each business segment
Goodwill, Beginning	10,557	10,557
Goodwill, Acquired During Period		0
Foreign currency translation	0	0
Goodwill, Ending	$ 10,557	$ 10,557