Commitments and Contingent Liabilities (Details Textual) $ in Thousands	12 Months Ended
	Mar. 03, 2018 USD ($) Sale_And_Leaseback_Agreement Facility	Mar. 04, 2017 USD ($)	Feb. 27, 2016 USD ($)
Long-term Purchase Commitment [Line Items]
Total rental expense	$ 21,800	$ 16,900	$ 15,500
Future minimum lease payments	$ 63,319
Number of sale and leaseback agreements | Sale_And_Leaseback_Agreement	1
Average annual lease payment	$ 1,000
Company's backlog bonded by performance bonds	238,600
Face value of performance bonds	519,300
Total value of letter of credit	23,500
Purchase obligations	$ 183,900
Number of properties acquired with historical environmental conditions | Facility	1
Proceeds from new markets tax credit transaction, net of deferred costs	$ 6,000
Deferred benefit from New Markets Tax Credit transactions	16,708	16,708
Deferred Costs		4,500
Other current and non-current liabilities
Long-term Purchase Commitment [Line Items]
Deferred gain on sale leaseback arrangements	1,300
Current Liabilities and Other Non Current Liabilities
Long-term Purchase Commitment [Line Items]
Reserve for environmental liabilities	1,300	$ 1,400
Sotawall
Long-term Purchase Commitment [Line Items]
Total rental expense	2,600
Future minimum lease payments	$ 14,900