Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Nov. 26, 2016	Feb. 27, 2016
Statement of Financial Position [Abstract]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	$ 395	$ 0
Current assets
Cash and cash equivalents	51,599	60,470
Short-term available for sale securities	30,635	30,173
Restricted cash	14,884	0
Receivables, net of allowance for doubtful accounts	188,442	172,832
Inventories	73,161	63,386
Deferred tax assets	0	1,820
Other current assets	6,770	8,112
Total current assets	365,491	336,793
Property, plant and equipment, net	229,556	202,462
Available-for-sale Securities, Debt Securities, Noncurrent	10,962	12,519
Goodwill	74,308	73,996
Intangible assets	19,460	19,862
Other assets	17,073	11,808
Total assets	717,245	657,440
Current liabilities
Accounts payable	65,087	64,762
Accrued payroll and related benefits	42,132	39,946
Accrued self-insurance reserves	8,581	7,818
Other current liabilities	32,369	29,339
Billings in excess of costs and earnings on uncompleted contracts	36,786	31,890
Accrued income taxes	3,439	3,626
Total current liabilities	188,394	177,381
Long-term debt	20,400	20,400
Long-term self-insurance reserves	8,008	7,137
Deferred tax liabilities	0	4,972
Other non-current liabilities	48,266	41,355
Commitments and contingent liabilities (Note 13)
Shareholders' equity
Common stock of $0.33-1/3 par value; authorized 50,000,000 shares; issued and outstanding 28,996,209 and 28,958,119, respectively	9,549	9,561
Additional paid-in capital	148,379	145,528
Retained earnings	323,070	282,477
Common stock held in trust	(863)	(837)
Deferred compensation obligations	863	837
Accumulated other comprehensive loss	(28,821)	(31,371)
Total shareholders’ equity	452,177	406,195
Total liabilities and shareholders' equity	$ 717,245	$ 657,440

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.