Basis of Presentation (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Jun. 02, 2018	Jun. 03, 2017	Mar. 03, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	$ 336,531	$ 272,307
Cost of sales	255,801	202,013
Gross profit	80,730	70,294
Selling, general and administrative expenses	58,735	46,188
Operating income	21,995	24,106
Income tax expense	4,881	7,904
Net earnings	15,373	$ 16,104
Inventories	77,299		$ 80,908
Costs and earnings on contracts in excess of billings	39,365		4,120
Billings on contracts in excess of costs and earnings	24,381		12,461
Other current liabilities	74,269		79,696
Retained earnings	386,518		$ 373,259
Balances without adoption of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	327,251
Cost of sales	248,657
Gross profit	78,594
Selling, general and administrative expenses	58,386
Operating income	20,208
Income tax expense	4,451
Net earnings	14,016
Inventories	86,655
Costs and earnings on contracts in excess of billings	15,265
Billings on contracts in excess of costs and earnings	24,124
Other current liabilities	73,297
Retained earnings	$ 384,876