AZZ (AZZ) 10-K 15 May 18 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Feb. 28, 2018	May 02, 2018	Aug. 31, 2017
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Feb. 28, 2018
Entity Registrant Name	AZZ INC
Entity Central Index Key	8,947
Current Fiscal Year End Date	--02-28
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,018
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		26,024,006
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,253,526,170

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Income Statement [Abstract]
Net Sales	$ 810,430	$ 863,538	$ 889,400
Costs and Expenses
Cost of Sales	650,121	658,206	661,282
Gross profit	160,309	205,332	228,118
Selling, General and Administrative	112,061	106,424	107,823
Operating Income (Loss)	48,248	98,908	120,295
Interest Expense	13,860	14,732	15,155
Other Expense (Income) - net	2,724	(1,197)	3,092
Gain (Loss) on Disposition of Property Plant Equipment	(765)	(76)	327
Income before income taxes	30,899	85,297	102,375
Income Tax Expense	(14,270)	24,033	26,831
Net Income	$ 45,169	$ 61,264	$ 75,544
Earnings Per Common Share
Basic Earnings Per Share (usd per share)	$ 1.74	$ 2.36	$ 2.93
Diluted Earnings Per Share (usd per share)	$ 1.73	$ 2.35	$ 2.91
Weighted average number common shares (shares)	25,970,000	25,965,000	25,800,000
Weighted average number common shares and potentially dilutive common shares (shares)	26,036,000	26,097,000	25,937,000
Common Stock, Dividends, Per Share, Declared	$ 0.68	$ 0.64	$ 0.60

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Net Income	$ 45,169	$ 61,264	$ 75,544
Other Comprehensive Income (Loss):
Unrealized Translation Gains (Losses)	3,928	1,520	(7,674)
Interest rate swap (net of tax of $29, $29 and $29)	(54)	(54)	(54)
Other Comprehensive Income (Loss)	3,874	1,466	(7,728)
Comprehensive Income	$ 49,043	$ 62,730	$ 67,816

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Statement of Comprehensive Income [Abstract]
Interest rate swap, income tax	$ (29,205)	$ (29,205)	$ (29,205)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Current assets:
Cash and cash equivalents	$ 20,853	$ 11,302
Accounts receivable, net of allowance for doubtful accounts of $569 and $347 in 2018 and 2017, respectively	141,488	138,470
Inventories - net	110,761	94,007
Costs and estimated earnings in excess of billings on uncompleted contracts	51,787	50,262
Deferred income tax assets	0	249
Prepaid expenses and other	4,265	2,762
Total current assets	329,154	297,052
Property, plant, and equipment, net	216,855	228,610
Goodwill	321,307	306,579
Intangibles and other assets	160,893	146,113
Total Assets	1,028,209	978,354
Current Liabilities:
Accounts payable	54,162	49,816
Income tax payable	144	778
Accrued salaries and wages	19,011	23,429
Other accrued liabilities	19,622	24,042
Customer advance payment	1,816	1,459
Billings in excess of costs and estimated earnings on uncompleted contracts	22,698	20,617
Long-term debt due within one year	14,286	16,629
Total Current Liabilities	131,739	136,770
Long-term debt due after one year	286,609	254,800
Deferred income tax liabilities	32,962	53,648
Other Liabilities, Noncurrent	11,696	0
Total liabilities	$ 463,006	$ 445,218
Common Stock, Shares, Issued	25,959,466	25,963,679
Shareholders' Equity:
Common Stock, $1.00 par value; 100,000 shares authorized; 25,959 and 25,964 shares issued and outstanding at February 28, 2018 and 2017, respectively	$ 25,959	$ 25,964
Capital in excess of par value	38,446	37,739
Retained earnings	526,018	498,527
Accumulated other comprehensive income (loss)	(25,220)	(29,094)
Total Shareholders’ Equity	565,203	533,136
Total Liabilities and Shareholders’ Equity	$ 1,028,209	$ 978,354

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Accounts Receivable, Allowance for Doubtful Accounts	$ 568,953	$ 347,000
Common Stock, Par Value (usd per share)	$ 1	$ 1
Common Stock, Shares Authorized (shares)	100,000,000	100,000,000
Common Stock, Shares, Issued	25,959,466	25,963,679
Common Stock, Shares, Outstanding	25,959,466	25,963,679

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Cash Flows From Operating Activities:
Net Income	$ 45,169	$ 61,264	$ 75,544
Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities:
Depreciation	33,400	33,400	31,200
Depreciation, Amortization and Accretion, Net	50,526	50,357	47,417
Deferred income tax expense	(20,637)	1,714	1,960
Share-based compensation expense	6,121	5,870	4,538
Amortization of deferred debt issuance costs	595	1,262	1,347
Provision for doubtful accounts	3,007	48	(1,072)
Gain (Loss) on Disposition of Assets	10,834	6,602	286
Net (gain) loss on insurance settlement or sale of property, plant and equipment	765	76	(327)
Effects of changes in operating assets and liabilities, net of acquisitions:
Accounts Receivable	3,492	(4,912)	(843)
Inventories	(9,927)	(13,754)	(2,052)
Prepaid expenses and other assets	(2,376)	(1,977)	1,996
Net change in billings related to costs and estimated earnings on uncompleted contracts	984	13,592	7,276
Accounts payable	1,540	1,245	(2,236)
Other accrued liabilities and income taxes payable	(11,184)	(10,211)	9,755
Net cash provided by operating activities:	78,909	111,176	143,589
Cash flows from investing activities:
Proceeds from the sale or insurance settlement of property, plant, and equipment	458	769	1,137
Acquisition of subsidiaries, net of cash acquired	(44,785)	(22,679)	(60,584)
Purchases of property, plant and equipment	(29,612)	(41,434)	(39,861)
Net cash used in investing activities:	(73,939)	(63,344)	(99,308)
Cash flows from financing activities:
Tax benefits from stock options exercised	0	0	1,025
Payments on revolving loan	(256,500)	(211,000)	(170,561)
Proceeds from Lines of Credit	349,000	179,500	181,481
Proceeds from long-term debt	(63,504)	(23,192)	(21,786)
Cash dividends paid	(17,678)	(16,645)	(15,482)
Net cash provided by (used in) financing activities	3,800	(76,619)	(25,323)
Payments for Repurchase of Common Stock	7,518	5,282	0
Effect of exchange rate changes on cash	781	(102)	(1,294)
Net increase (decrease) in cash and cash equivalents	9,551	(28,889)	17,664
Cash and cash equivalents at beginning of year	11,302	40,191	22,527
Cash and cash equivalents at end of year	20,853	11,302	40,191
Cash paid during the year for:
Interest	13,593	13,780	14,228
Income taxes	$ 8,701	$ 19,857	$ 21,574

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning balance (shares) at Feb. 28, 2015		25,732
Balance, beginning balance at Feb. 28, 2015	$ 424,452	$ 25,732	$ 27,706	$ 393,846	$ (22,832)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		15
Share-based compensation	4,538	$ 15	4,523
Stock Issued During Period, Shares, Restricted Stock Award, Gross		17
Restricted Stock Units	(373)	$ 17	(390)
Stock Issued for SARs, Shares		41
Stock Issued for SARs	(91)	$ 41	(132)
Employee Stock Purchase Plan (shares)		69
Employee Stock Purchase Plan	2,485	$ 69	2,416
Retirement of treasury shares	(1,025)		(1,025)
Cash dividend paid	(15,482)			(15,482)
Net income	75,544			75,544	0
Foreign currency translation	(7,674)				(7,674)
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 29, 2016		25,874
Balance, ending balance at Feb. 29, 2016	484,370	$ 25,874	35,148	453,908	(30,560)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		13
Share-based compensation	5,870	$ 13	5,857
Stock Issued During Period, Shares, Restricted Stock Award, Gross		25
Restricted Stock Units	(580)	$ 25	(605)
Stock Issued for SARs, Shares		81
Stock Issued for SARs	(241)	$ 81	(322)
Employee Stock Purchase Plan (shares)		71
Employee Stock Purchase Plan	2,914	$ 71	2,843
Retirement of treasury shares	(5,282)		(5,182)	0
Cash dividend paid	(16,645)			(16,645)
Net income	61,264			61,264	0
Foreign currency translation	1,520				1,520
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 28, 2017		25,964
Balance, ending balance at Feb. 28, 2017	533,136	$ 25,964	37,739	498,527	(29,094)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		16
Share-based compensation	6,121	$ 16	6,105
Stock Issued During Period, Shares, Restricted Stock Award, Gross		43
Restricted Stock Units	(1,213)	$ 43	(1,256)
Stock Issued for SARs, Shares		6
Stock Issued for SARs	(5)	$ 6	(11)
Employee Stock Purchase Plan (shares)		77
Employee Stock Purchase Plan	3,317	$ 77	3,240
Stock Repurchased and Retired During Period, Shares		(147)
Stock Repurchased and Retired During Period, Value	(7,518)	$ (147)	(7,371)
Cash dividend paid	(17,678)			(17,678)
Net income	45,169			45,169
Foreign currency translation	3,928				3,928
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 28, 2018		25,959
Balance, ending balance at Feb. 28, 2018	$ 565,203	$ 25,959	$ 38,446	$ 526,018	$ (25,220)

Consolidated Statement of Shar9

Consolidated Statement of Shareholders' Equity (Parenthetical) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Statement of Stockholders' Equity [Abstract]
Interest rate swap, income tax	$ (29,205)	$ (29,205)	$ (29,205)

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	12 Months Ended
	Feb. 28, 2018
Accounting Policies [Abstract]
Summary of significant accounting policies	Note 1 – Summary of Significant Accounting Policies Organization AZZ Inc. (the “Company” “AZZ” or “We”) operates primarily in the United States of America and Canada and also has operations in China, Brazil, Poland and the Netherlands. Information about the Company's operations by segment is included in Note 13 to the consolidated financial statements. Basis of consolidation The consolidated financial statements were prepared in accordance with the accounting principles generally accepted in the United States of America and include the accounts of the Company and its wholly owned subsidiaries. All significant inter-company accounts and transactions have been eliminated in consolidation. Use of estimates The preparation of the financial statements in conformity with generally accepted accounting principles in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Concentrations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents and trade accounts receivable. The Company maintains cash and cash equivalents with various financial institutions. These financial institutions are located throughout the United States and Canada, as well as Europe, China and Brazil. The Company's policy is designed to limit exposure to any one institution. The Company performs periodic evaluations of the relative credit standing of those financial institutions that are considered in the Company's banking relationships and has not experienced any losses in such accounts. We believe we are not exposed to any significant credit risk related to cash and cash equivalents. Concentrations of credit risk with respect to trade accounts receivable are limited due to the Company’s diversity by virtue of two operating segments, the number of customers, and the absence of a concentration of trade accounts receivable in a small number of customers. The Company performs continuous evaluations of the collectibility of trade accounts receivable and allowance for doubtful accounts based upon historical losses, economic conditions and customer specific events. After all collection efforts are exhausted and an account is deemed uncollectible, it is written off against the allowance for doubtful accounts. Collateral is usually not required from customers as a condition of sale. Revenue recognition The Company recognizes revenue for the Energy Segment upon transfer of title and risk to customer or based upon the percentage of completion method of accounting for electrical products built to customer specifications and services under long-term contracts. We typically recognize revenue for the Metal Coatings Segment at completion of the service unless we specifically agree with the customer to hold its material for a predetermined period of time after the completion of the galvanizing process and, in that circumstance, we invoice and recognize revenue upon shipment. Customer advanced payments presented in the balance sheets arise from advanced payments received from our customers prior to shipment of the product and are not related to revenue recognized under the percentage of completion method. The extent of progress for revenue recognized using the percentage of completion method is measured by the ratio of contract costs incurred to date to total estimated contract costs at completion. Contract costs include direct labor and material and certain indirect costs. Selling, general and administrative costs are charged to expense as incurred. Provisions for estimated losses, if any, on uncompleted contracts are made in the period in which such losses are able to be determined. The assumptions made in determining the estimated cost could differ from actual performance resulting in a different outcome for profits or losses than anticipated. Cash and cash equivalents The Company considers cash and cash equivalents to include cash on hand, deposits with banks and all highly liquid investments with an original maturity of three months or less. Inventories Inventory is stated at the lower of cost or net realizable value. Cost is determined principally using a weighted-average method for the Energy Segment and the first-in-first-out (FIFO) method for the Metal Coatings Segment. The Company evaluates its ending inventories for excess quantities and obsolescence based on forecasted demand within specific time horizons, technological obsolescence, and an assessment of any inventory that is not in sellable condition. Property, plant and equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows: Buildings and structures 10-25 years Machinery and equipment 3-15 years Furniture and fixtures 3-15 years Automotive equipment 3 years Computers and software 3 years Repairs and maintenance are charged to expense as incurred; renewals and betterments that significantly extend the useful life of the asset are capitalized. Amortizable Intangible and Long-lived assets Purchased intangible assets on the consolidated balance sheets are comprised of customer lists, backlogs, engineering drawings and non-compete agreements. Such intangible assets (excluding indefinite-lived intangible assets) are being amortized on a straight-line basis over the estimated useful lives of the assets ranging from two to nineteen years. The Company records impairment losses on long-lived assets, including identifiable intangible assets, when events and circumstances indicate that the assets might be impaired and the undiscounted projected cash flows associated with those assets are less than their carrying amount. In those situations, impairment loss on a long-lived asset is measured based on the excess of the carrying amount of the asset over the asset’s fair value. For fiscal year 2018, 2017 and 2016, the Company recorded impairment losses of $10.8 million , $6.6 million and $0.3 million respectively, related to the disposition of certain property, plant and equipment. Such losses were recorded within costs of sales and selling, general and administrative in the consolidated statements of income. Goodwill and Other Indefinite-Lived Intangible Assets Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Goodwill is not subject to amortization but is subject to an annual impairment test during the fourth quarter of each fiscal year, or earlier if indicators of potential impairment exist. The test is calculated using an income approach. Based on the present value of the future cash flows, the Company determines whether an impairment may exist. A significant change in projected cash flows or cost of capital for future years could result in an impairment of goodwill in future years. Variables impacting future cash flows include, but are not limited to, the level of customer demand for and response to products and services we offer to the power generation market, the electrical transmission and distribution markets, the general industrial market and the hot dip galvanizing market; changes in economic conditions of these various markets; raw material and natural gas costs and availability of experienced labor and management to implement our growth strategies. For fiscal year 2018, 2017 and 2016 no goodwill impairment loss was recorded. Other indefinite-lived intangible assets consist of certain tradenames acquired as part of the Powergrid Solutions and Enhanced Powder Coating acquisitions during fiscal year 2018. The Company will test the carrying value of these tradenames during the fourth quarter of each fiscal year, or more frequently when an event occurs or circumstances change that indicates the carrying value may not be recoverable by comparing the asset's fair value to its carrying value. Fair value is measured using a relief-from-royalty approach, which assumes the fair value of the tradename is the discounted cash flows of the amount that would be paid had the Company not owned the tradename and instead licensed the tradename from another company. Debt issuance costs Debt issue costs related to the revolver are deferred within other assets and are amortized using the effective interest rate method over the term of the debt. Debt issue costs related to debt other than the revolver are deferred within total debt due after one year and are amortized using the effective interest rate method over the term of the debt. Income taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company recognizes a valuation allowance against net deferred tax assets to the extent that the Company believes these net assets are not more likely than not to be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. As applicable, the Company records uncertain tax positions in accordance with GAAP on the basis of a two-step process whereby (1) the Company determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company currently does not have any unrecognized tax benefits to record related to U.S. federal, state or, foreign tax exposure. The Company continues to review its tax exposure for any significant need to record unrecognized tax benefits in the future. The Company is subject to taxation in the U.S. and various state, provincial and local and foreign jurisdictions. With few exceptions, as of February 28, 2018 , the Company is no longer subject to U.S. federal or state examinations by tax authorities for years before fiscal 2015. Share-based compensation The Company has granted restricted stock units awards, performance share units and stock appreciation rights for a fixed number of shares to employees and directors. A discussion of share-based compensation can be found in Note 11 to the Consolidated Financial Statements. Financial instruments Fair value is an exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Hierarchy Levels 1, 2, or 3 are terms for the priority of inputs to valuation techniques used to measure fair value. Hierarchy Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Hierarchy Level 2 inputs are inputs other than quoted prices included with Level 1 that are directly or indirectly observable for the asset or liability. Hierarchy Level 3 inputs are inputs that are not observable in the market. The carrying amount of the Company's financial instruments (cash equivalents, accounts receivable, accounts payable, accrued liabilities and debt), excluding the Senior Notes, approximates the fair value of these instruments based upon either their short-term nature or their variable market rate of interest. As of February 28, 2018 and 2017 the fair value of the outstanding Senior Notes, as described in Note 12 to the Consolidated Financial Statements, was approximately $133.7 million and $144.4 million , respectively. These fair values were determined using the discounted cash flow at the market rate as well as the applicable market interest rates classified as Level 2 inputs. Derivative financial instruments From time to time, the Company uses derivatives to manage interest rate risk. The Company’s policy is to use derivatives for risk management purposes only, which includes maintaining the ratio between the Company’s fixed and floating rate debt obligations that management deems appropriate, and prohibits entering into such contracts for trading purposes. The Company enters into derivatives only with counterparties (primarily financial institutions) which have substantial financial wherewithal to minimize credit risk. As the result of the recent global financial crisis, a number of financial institutions have failed or required government assistance, and counterparties considered substantial may develop credit risk. The amount of gains or losses from the use of derivative financial instruments has not been and is not expected to be material to the Company’s consolidated financial statements. As of February 28, 2018 , the Company had no derivative financial instruments. Warranty reserves Within other accrued liabilities, a reserve has been established to provide for the estimated future cost of warranties on a portion of the Company’s delivered products. Management periodically reviews the reserves, and adjustments are made accordingly. A provision for warranty on products is made on the basis of the Company’s historical experience and identified warranty issues. Warranties cover such factors as non-conformance to specifications and defects in material and workmanship. The following is a roll-forward of amounts accrued for warranties (in thousands): Balance at February 28, 2015 $ 2,287 Warranty costs incurred (2,570 ) Additions charged to income 3,198 Balance at February 29, 2016 $ 2,915 Warranty costs incurred (1,947 ) Additions charged to income 1,130 Balance at February 28, 2017 $ 2,098 Warranty costs incurred (2,225 ) Additions charged to income 2,140 Balance at February 28, 2018 $ 2,013 Foreign Currency Translation The local currency is the functional currency for the Company’s foreign operations. Related assets and liabilities are translated into United States dollars at exchange rates existing at the balance sheet date, and revenues and expenses are translated at weighted-average exchange rates. The foreign currency translation adjustment is recorded as a separate component of shareholders’ equity and is included in accumulated other comprehensive income (loss). Accruals for Contingent Liabilities The Company is subject to the possibility of various loss contingencies arising in the normal course of business. The amounts the Company may record for estimated claims, such as self-insurance programs, warranty, environmental and other contingent liabilities, requires the Company to make judgments regarding the amount of expenses that will ultimately be incurred. The Company uses past history and experience and other specific circumstances surrounding these claims in evaluating the amount of liability that should be recorded. Due to the inherent limitations in estimating future events, actual amounts paid or transferred may differ from those estimates. Accounting Standards Recently Adopted In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes (ASU 2015-17). ASU 2015-17 simplifies the presentation of deferred taxes in a classified statement of financial position and was adopted by the Company on March 1, 2017. As a result of the adoption, the Company is required to offset deferred tax liabilities and assets, as well as any related valuation allowance, and present as a single non-current amount. However, the Company shall not offset deferred tax liabilities and assets attributable to different tax-paying components of the entity or to different tax jurisdictions. The adoption was on a prospective basis and therefore had no impact on the prior year. Recently Issued Accounting Pronouncements In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other Topics (Topic 350)-Simplifying the Test for Goodwill Impairment. This guidance simplifies the measurement of goodwill by eliminating the Step 2 impairment test. The new guidance requires companies to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. The amendment is required to be adopted prospectively. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The Company elected to adopt the guidance early effective for its annual goodwill impairment test performed in the fourth quarter of fiscal year 2018 and the adoption did not have a material impact on its consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments , which clarifies the presentation and classification of certain cash receipts and cash payments in the statement of cash flows. The Company will adopt the new standard effective in the first quarter of fiscal year 2019 and the adoption is not expected to have a material impact on its consolidated statements of cash flows. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . Under the new guidance, a lessee will be required to recognize assets and liabilities for all leases with lease terms of more than 12 months. Consistent with current GAAP, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as finance or operating lease. This ASU will be effective for the Company in the first quarter of its fiscal year 2020 and early adoption is permitted. The ASU requires adoption based upon a modified retrospective transition approach. The Company has not yet selected a transition method, has not yet determined whether it will elect early adoption and is currently evaluating the impact of the adoption of this standard on its consolidated financial statements and related disclosures. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers: Topic 606 ("ASU 2014-09") which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition . The core principle of ASU 2014-09 is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The standard will be effective for the Company beginning in fiscal 2019 and provides the option to adopt the guidance on a full retrospective basis or a modified retrospective basis. The Company has substantially completed its assessment of the impacts that the standard will have on its financial statements, and determined that the adoption is not expected to have a significant impact on its results of operations, cash flows, or financial position. Based on the Company’s evaluation process completed and review of its contracts with customers, the timing and amount of revenue recognized under the new standard is generally consistent with its revenue recognition policy under previous guidance. For its Metal Coatings segment, the Company will recognize revenue over time as the metal coating is applied to the customer owned material while revenue was recognized at the completion of the service under the prior guidance. However, the change is not expected to significantly impact the timing of revenue recognition except for uncompleted jobs at the end of each quarter. For its Energy segment, the Company will recognize revenues for custom built products over time if the goods do not have an alternative use to the Company and the Company has an unconditional right to payment for work completed to date plus the applicable margin. This is generally consistent with the revenue recognition pattern under the prior guidance, however the Company continues to monitor its contracts to ensure that it has an unconditional right to payment and, in the circumstances when it does not, per the guidance, it will recognize revenues at a point-in-time upon transfer of the good to the customer. For bespoke services within its Energy segment, the Company will continue to recognize revenues over time as the services are rendered, and for off-the-shelf products, the Company will continue to recognize revenue at a point-in-time upon the transfer of the goods to the customer. The Company will adopt the new standard effective in the first quarter of fiscal year 2019, using the modified retrospective approach, and will expand its consolidated financial statement disclosures in order to comply with the new standard.

Inventories (Notes)

Inventories (Notes)	12 Months Ended
	Feb. 28, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories (net) consisted of the following (in thousands): February 28, 2018 February 28, 2017 Raw materials $ 98,475 $ 80,169 Work-in-process 2,544 6,832 Finished goods 9,742 7,006 $ 110,761 $ 94,007

Property, Plant and Equipment (

Property, Plant and Equipment (Notes)	12 Months Ended
	Feb. 28, 2018
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment Disclosure [Text Block]	Property, Plant, and Equipment Property, plant and equipment consisted of the following (in thousands): February 28, 2018 February 28, 2017 Land $ 22,445 $ 22,360 Building and structures 152,191 139,627 Machinery and equipment 234,071 228,246 Furniture, fixtures, software and computers 25,316 25,593 Automotive equipment 3,432 2,998 Construction in progress 13,977 23,669 451,432 442,493 Less accumulated depreciation (234,577 ) (213,883 ) Net property, plant, and equipment $ 216,855 $ 228,610 Depreciation expense was $33.4 million , $33.4 million , and $31.2 million for fiscal 2018, 2017, and 2016, respectively.

Costs and Estimated Earnings On

Costs and Estimated Earnings On Uncompleted Contracts (Notes)	12 Months Ended
	Feb. 28, 2018
Contractors [Abstract]
Costs and estimated earnings on uncompleted contracts	Costs and Estimated Earnings on Uncompleted Contracts Costs and estimated earnings on uncompleted contracts consisted of the following (in thousands) February 28, 2018 February 28, 2017 Costs incurred on uncompleted contracts $ 115,030 $ 127,839 Estimated earnings 57,182 53,598 172,212 181,437 Less billings to date (151,894 ) (151,792 ) $ 20,318 $ 29,645 The amounts noted above are included in the accompanying consolidated balance sheets under the following captions (in thousands): February 28, 2018 February 28, 2017 Cost and estimated earnings in excess of billings on uncompleted contracts $ 51,787 $ 50,262 Billings in excess of costs and estimated earnings on uncompleted contracts - short-term (22,698 ) (20,617 ) Billings in excess of costs and estimated earnings on uncompleted contracts - long-term (8,771 ) — $ 20,318 $ 29,645 The long-term portion of billings in excess of costs and estimated earnings on uncompleted contracts is included as a component of other long-term liabilities on the consolidated balance sheet.

Other Accrued Liabilities (Note

Other Accrued Liabilities (Notes)	12 Months Ended
	Feb. 28, 2018
Other Liabilities Disclosure [Abstract]
Other accrued liabilities	Other Accrued Liabilities Other accrued liabilities consisted of the following (in thousands): February 28, 2018 February 28, 2017 Accrued interest $ 1,649 $ 2,036 Tenant improvements 163 278 Accrued warranty 2,013 2,098 Commissions 2,801 2,483 Personnel expenses 6,493 8,251 Group medical insurance 1,905 1,969 Other 4,598 6,927 Total $ 19,622 $ 24,042

Realignment Costs (Notes)

Realignment Costs (Notes)	12 Months Ended
	Feb. 28, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	Realignment Costs During fiscal year 2017, as part of AZZ's ongoing efforts to optimize cost and effectiveness, the Company undertook a review of its operations to optimize the financial performance of its operating assets. As a result, the Company recognized $8.0 million of realignment charges in the second quarter of fiscal 2017. A total of $6.7 million was included in Cost of Sales for the disposition and write off of certain fixed assets within the Metal Coatings Segment, including the cost of closing two plants, the write off of certain assets related to the conversion of a third plant from a standard galvanizing plant to a galvanized rebar plant, and the cost of writing off certain other functionally obsolete assets across other galvanizing plants during the second quarter. The Company also reserved $1.3 million in Selling, General and Administrative Expense for realignment costs related to one-time employee severance associated with changes needed to improve management efficiency in the Energy and Metal Coatings Segments. During fiscal year 2016, the Company reviewed its available capacity within the Energy segment and recorded realignment costs related to severance associated with consolidating capacity at various facilities. Additionally we reserved for the disposition and write-off of certain fixed assets in connection with the capacity consolidation. The total cost related to the capacity consolidation is estimated to be $0.9 million . A total of $0.2 million of severance costs and $0.2 million of costs for the disposition of certain fixed assets are included in Selling, General and Administrative Expenses. A total of $0.2 million of severance costs and $0.3 million of costs for the disposition of certain fixed assets are included in Cost of Sales. The following table provides a summary of the realignment activities and related liabilities recorded in accrued liabilities (in thousands): Balance at February 28, 2015 $ 456 Realignment costs accrued 437 Cash payments (832 ) Balance at February 29, 2016 $ 61 Realignment costs accrued 1,260 Cash payments (1,014 ) Balance at February 28, 2017 $ 307 Realignment costs accrued — Cash payments (307 ) Balance at February 28, 2018 $ —

Employee Benefit Plans (Notes)

Employee Benefit Plans (Notes)	12 Months Ended
	Feb. 28, 2018
Postemployment Benefits [Abstract]
Employee benefit plans	Employee benefit plans The Company has historically had a profit sharing plan and 401(k) match plan covering substantially all of its employees. Under the provisions of the plan, the Company contributes amounts as authorized by the Board of Directors. Total contributions to the profit sharing plan and the Company’s 401(k) match plan, were $4.8 million, $4.5 million, and $4.9 million for fiscal 2018, 2017, and 2016, respectively.

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Feb. 28, 2018
Income Tax Disclosure [Abstract]
Income taxes	Income taxes The provision for income taxes consists of (in thousands): Year Ended February 28, February 28, February 29, 2016 Income before income taxes: Domestic $ 24,282 $ 74,972 $ 93,561 Foreign 6,617 10,325 8,814 Income before income taxes $ 30,899 $ 85,297 $ 102,375 Current provision (benefit): Federal $ 9,080 $ 23,282 $ 28,099 Foreign 1,958 2,751 2,706 State and local 964 (696 ) (337 ) Total current provision for income taxes $ 12,002 $ 25,337 $ 30,468 Deferred provision (benefit): Federal $ (25,855 ) $ (2,486 ) $ (6,560 ) Foreign 100 189 (123 ) State and local (517 ) 993 3,046 Total deferred provision for (benefit from) income taxes $ (26,272 ) $ (1,304 ) $ (3,637 ) Total provision for (benefit from) income taxes $ (14,270 ) $ 24,033 $ 26,831 In general, it is the Company's practice and intention to reinvest the earnings of its non-U.S. subsidiaries in those operations. As of fiscal year end 2018, other than for the one-time mandatory repatriation transition tax charge, the Company has not made a provision for U.S. or additional foreign withholding taxes on approximately $14.5 million of the excess of the amount for financial reporting over the tax basis of investments in foreign subsidiaries that is indefinitely reinvested. Generally, such amounts become subject to foreign withholding tax upon the remittance of dividends and under certain other circumstances. It is not practicable to estimate the amount of withholding tax liability related to investments in these foreign subsidiaries. In December 2017, the Tax Cuts and Jobs Act of 2017 (the “Act”) was signed into law revising the U.S. corporate income tax. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the elimination of certain deductions and imposing a mandatory one-time tax on accumulated earnings of foreign subsidiaries. The Act also includes international provisions, which generally establish a territorial-style system for taxing foreign source income of domestic multinational corporations. The primary impacts of the Act reflected in the consolidated financial statements relate to the remeasurement of deferred tax liabilities resulting from the change in the corporate tax rate and a one-time mandatory transition tax on undistributed earnings of foreign affiliates. The Company recorded a net $23.2 million provisional reduction in tax expense related to the Act in the fourth quarter of fiscal year 2018, the period in which the legislation was enacted. The provisional benefit recognized related to the remeasurement of certain deferred tax assets and liabilities based on the rates at which they are expected to realize was $25.0 million. The provisional expense recognized related to the one-time tax on the mandatory deemed repatriation of foreign earnings was $1.8 million of which the Company will elect to pay the one-time tax over a period of eight years. Additional analysis of historical foreign earnings is necessary to finalize the tax impact of the Act and any subsequent adjustment to these amounts will be recorded as current tax expense in the quarter of fiscal year 2019 in which the analysis is complete. We continue to reinvest cash in foreign jurisdictions and have not recorded the effects of any applicable foreign withholding tax. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act ("SAB 118"), which allows the Company to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. Since the Act was passed in the fourth quarter of the Company’s fiscal year 2018, and ongoing guidance and accounting interpretation are expected over the next 12 months, the Company considers the accounting of the deferred tax remeasurements, the one-time mandatory transition tax and other items to be incomplete due to the forthcoming guidance and our ongoing analysis of final year-end data and tax positions. The Company expects to complete its analysis within the measurement period in accordance with SAB 118. A reconciliation from the federal statutory income tax rate to the effective income tax rate is as follows: Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Statutory federal income tax rate 32.7 % 35.0 % 35.0 % Permanent differences 1.6 0.7 0.4 State income taxes, net of federal income tax benefit 0.4 0.4 (1.5 ) Benefit of Section 199 of the Code, manufacturing deduction (2.2 ) (2.3 ) (2.7 ) Valuation allowance — — (1.2 ) Stock compensation (0.5 ) (1.8 ) — Tax credits (7.7 ) (3.1 ) (3.2 ) Foreign tax rate differential (0.4 ) (0.8 ) (0.4 ) Deferred tax remeasurements (78.9 ) — — Transition tax 8.6 — — Other 0.2 0.1 (0.2 ) Effective income tax rate (46.2 )% 28.2 % 26.2 % Deferred federal and state income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial accounting purposes and the amounts used for income tax purposes. Significant components of the Company’s net deferred income tax liability are as follows (in thousands): February 28, 2018 February 28, 2017 Deferred income tax assets: Employee related items $ 4,532 $ 6,839 Inventories 816 1,286 Accrued warranty 432 715 Accounts receivable 299 261 Net operating loss carry forward 5,067 4,011 11,146 13,112 Less: valuation allowance (1,558 ) (648 ) Total deferred income tax assets 9,588 12,464 Deferred income tax liabilities: Depreciation methods and property basis differences (17,955 ) (27,913 ) Other assets and tax-deductible goodwill (24,537 ) (37,950 ) Total deferred income tax liabilities (42,492 ) (65,863 ) Net deferred income tax liabilities $ (32,904 ) $ (53,399 ) The following table summarizes the Net operating loss (NOL) carryforward (in thousands): February 28, 2018 February 28, 2017 Federal $ — $ — State $ 5,067 $ 4,011 Foreign $ — $ — As of February 28, 2018 , the Company had pretax state NOL carryforwards of $57.6 million which, if unused, will begin to expire in 2025. As of fiscal year end 2018 and 2017, a portion of the Company's deferred tax assets were the result of state NOL carryforwards. The Company believes that it is more likely than not that the benefit from certain state NOL carry forwards will not be realized. In recognition of this risk, the Company has provided a valuation allowance of $1.6 million and $0.6 million as of fiscal year end 2018 and 2017, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Notes)	12 Months Ended
	Feb. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and intangible assets	Goodwill and intangible assets Goodwill is not amortized but is subject to annual impairment tests. Other intangible assets are amortized over their estimated useful lives. Changes in goodwill by segment for fiscal year 2018 and 2017 are as follows (in thousands): Segment February 28, Acquisitions Foreign February 28, Metal Coatings $ 109,980 $ 6,590 $ 662 $ 117,232 Energy 196,599 7,476 — 204,075 Total $ 306,579 $ 14,066 $ 662 $ 321,307 Segment February 29, Acquisitions Foreign February 28, Metal Coatings $ 109,314 $ — $ 666 $ 109,980 Energy 183,213 13,386 — 196,599 Total $ 292,527 $ 13,386 $ 666 $ 306,579 The Company completes its annual impairment analysis of goodwill on December 31st of each year. As a result, the Company determined that there was no impairment of goodwill. Amortizable intangible assets consisted of the following (in thousands): February 28, 2018 February 28, 2017 Customer related intangibles $ 194,712 $ 177,514 Non-compete agreements 7,952 5,651 Trademarks 4,569 4,569 Technology 7,400 7,400 Engineering drawings 24,600 24,600 Backlog 7,600 7,600 Gross intangible assets 246,833 227,334 Less accumulated amortization (105,642 ) (88,314 ) Total, net $ 141,191 $ 139,020 The Company recorded amortization expense of $17.1 million, $16.9 million and $16.2 million for fiscal 2018 , 2017 and 2016, respectively, related to the amortizable intangible assets listed above. In addition to its amortizable intangible assets, the Company has recorded indefinite-lived intangible assets of $2.7 million on its consolidated balance sheet at February 28, 2018 related to certain tradenames. These indefinite-lived intangible assets are not amortized, but are assessed for impairment annually or whenever an impairment may be indicated. The estimated amortization expense for the five succeeding fiscal years and thereafter is as follows (in thousands): Fiscal year: Amortization Expense 2019 $ 16,979 2020 16,457 2021 16,231 2022 16,206 2023 13,119 Thereafter 62,199 Total $ 141,191

Earnings Per Share (Notes)

Earnings Per Share (Notes)	12 Months Ended
	Feb. 28, 2018
Earnings Per Share [Abstract]
Earnings per share	Earnings Per Share Basic earnings per share is based on the weighted average number of shares outstanding during each year. Diluted earnings per share were similarly computed but have been adjusted for the dilutive effect of the weighted average number of restricted stock units, performance share units and stock appreciation rights outstanding. The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Numerator: Net income for basic and diluted earnings per common share $ 45,169 $ 61,264 $ 75,544 Denominator: Denominator for basic earnings per common share–weighted average shares 25,970 25,965 25,800 Effect of dilutive securities: Employee and director stock awards 66 132 137 Denominator for diluted earnings per common share 26,036 26,097 25,937 Earnings per share basic and diluted: Basic earnings per common share $ 1.74 $ 2.36 $ 2.93 Diluted earnings per common share $ 1.73 $ 2.35 $ 2.91 For fiscal 2018, approximately 0.1 million stock appreciation rights were excluded from the computation of diluted earnings per share as their effect would have been anti-dilutive. For fiscal 2017 and 2016, the Company had no stock appreciation rights that were excluded from the computation of diluted earnings per share.

Stock Compensation (Notes)

Stock Compensation (Notes)	12 Months Ended
	Feb. 28, 2018
Share-based Compensation [Abstract]
Stock compensation	Share-based Compensation The Company has one share-based compensation plan, the 2014 Long Term Incentive Plan (the “Plan”). The purpose of the Plan is to promote the growth and prosperity of the Company by permitting the Company to grant to its employees, directors and advisors various types of restricted stock unit awards, performance share units, stock options and stock appreciation rights to purchase common stock of the Company. The maximum number of shares that may be issued under the Plan is 1,500,000 shares. As of February 28, 2018 , the Company had approximately 1,304,407 shares reserved for future issuance under the Plan. Restricted Stock Unit Awards Restricted stock unit awards are valued at the market price of the Company's common stock on the grant date. Awards issued prior to fiscal 2015 generally have a three year cliff vesting schedule and awards issued subsequent to fiscal 2015 generally vest ratably over a period of three years but these awards may vest early in accordance with the Plan’s accelerated vesting provisions. The activity for non-vested restricted stock unit awards for the year ended February 28, 2018 is as follows: Restricted Weighted Non-Vested Balance as of February 28, 2017 134,547 $ 51.10 Granted 46,436 60.01 Vested (62,576 ) 47.26 Forfeited (8,630 ) 56.64 Non-Vested Balance as of February 28, 2018 109,777 $ 56.62 The total fair value of restricted stock units vested during fiscal years 2018, 2017, and 2016 was $3.0 million, $1.6 million and $0.9 million, respectively. For fiscal years 2018, 2017 and 2016, there were 109,777 , 134,547 and 98,693 , respectively, of non-vested restricted stock units outstanding with weighted average grant date fair values of $56.62 , $51.10 and $41.31 , respectively. Performance Share Unit Awards Performance share unit awards are valued at the market price of the Company's common stock on the grant date. These awards have a three year performance cycle and will vest and become payable, if at all, on the third anniversary of the award date. The awards are subject to the Company’s degree of achievement of a target annual average adjusted return on assets during these three year periods. In addition, a multiplier may be applied to the total awards granted which is based on the Company’s total shareholder return during such three year period in comparison to a defined specific industry peer group as set forth in the plan. The activity in our non-vested performance stock unit awards for the year ended February 28, 2018 is as follows: Performance Stock Units Weighted Average Grant Date Fair Value Non-Vested Balance as of February 28, 2017 51,426 $ 51.70 Granted 26,157 60.20 Vested — — Forfeited (7,553 ) 54.31 Non-Vested Balance as of February 28, 2018 70,030 $ 54.59 Stock Appreciation Rights Stock appreciation rights awards are granted with an exercise price equal to the market value of the Company's common stock on the date of grant. These awards generally have a contractual term of 7 years and vest ratably over a period of 3 years although some may vest immediately on issuance. These awards are valued using the Black-Scholes option pricing model. The Company did not grant any SARs in fiscal year 2018, 2017 or 2016. A summary of the Company’s stock appreciation rights awards activity is as follows: Year Ended February 28, 2018 February 28, 2017 February 29, 2016 SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price Outstanding at beginning of year 170,139 $ 42.02 312,748 $ 34.23 376,982 $ 31.27 Granted — — — — — — Exercised (19,481 ) 31.94 (141,983 ) 24.85 (59,441 ) 14.67 Forfeited (2,145 ) 45.36 (626 ) 43.92 (4,793 ) 44.56 Outstanding at end of year 148,513 $ 43.29 170,139 $ 42.02 312,748 $ 34.23 Exercisable at end of year 148,513 $ 43.29 126,975 $ 41.27 217,961 $ 29.83 The average remaining contractual term for both outstanding and exercisable stock appreciation rights as of February 28, 2018 was 2.68 years, with an aggregate intrinsic value of $0.1 million . The following table summarizes additional information about stock appreciation rights outstanding at February 28, 2018 . Range of Total Average Weighted SARs Weighted $25.67 9,080 1.00 $ 25.67 9,080 $ 25.67 $39.65 950 2.52 $ 39.65 950 $ 39.65 $43.92 82,378 3.01 $ 43.92 82,378 $ 43.92 $45.26 40,000 2.68 $ 45.26 40,000 $ 45.26 $45.36 16,105 2.00 $ 45.36 16,105 $ 45.36 $25.67 - $45.36 148,513 2.68 $ 43.29 148,513 $ 43.29 Directors Grants The Company granted each of its independent directors a total of 2,040 , 1,641 and 1,915 shares of its common stock during fiscal years 2018, 2017 and 2016, respectively. These common stock grants were valued at $49.00 , $60.94 and $52.21 per share for fiscal years 2018, 2017 and 2016, respectively, which was the market price of the Company's common stock on the respective grant dates. Employee Stock Purchase Plan The Company also has an employee stock purchase plan, which allows employees of the Company to purchase common stock of the Company through accumulated payroll deductions. Offerings under this plan have a duration of 24 months (the "offering period"). On the first day of an offering period (the “enrollment date”) the participant is granted the option to purchase shares on each exercise date at the lower of 85% of the market value of a share of our common stock on the enrollment date or the exercise date. The participant’s right to purchase common stock under the plan is restricted to no more than $25,000 per calendar year and the participant may not purchase more than 5,000 shares during any offering period. Participants may terminate their interest in a given offering or a given exercise period by withdrawing all of their accumulated payroll deductions at any time prior to the end of the offering period. Share-based compensation expense and related income tax benefits related to all the plans listed above were as follows (in thousands): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Compensation expense $ 6,121 $ 5,870 $ 4,538 Income tax benefits $ 2,122 $ 2,055 $ 1,588 Unrecognized compensation cost related to all the above at February 28, 2018 totaled $6.1 million. These costs are expected to be recognized over a weighted period of 1.67 years. The actual tax benefit realized for tax deductions from share-based compensation during each of these fiscal years totaled $0.2 million , $1.5 million and $1.0 million , respectively. The Company’s policy is to issue shares required under these plans from the Company’s treasury shares or from the Company’s authorized but unissued shares. The Company has no formal or informal plan to repurchase shares on the open market to satisfy these requirements.

Long-term Debt (Notes)

Long-term Debt (Notes)	12 Months Ended
	Feb. 28, 2018
Debt Disclosure [Abstract]
Long-term debt	Debt Following is a summary of debt (in thousands): February 28, 2018 February 28, 2017 2011 Senior Notes $ 125,000 $ 125,000 2008 Senior Notes 14,286 28,571 2017 Term Note — 49,219 2017 Revolving Line of Credit 162,000 69,500 Total debt 301,286 272,290 Unamortized debt issuance costs (391 ) (861 ) Total debt, net 300,895 271,429 Less amount due within one year (14,286 ) (16,629 ) Debt due after one year, net $ 286,609 $ 254,800 2011 Senior Notes On January 21, 2011, the Company entered into a Note Purchase Agreement (the “2011 Agreement”), pursuant to which the Company issued $125.0 million aggregate principal amount of its 5.42% unsecured Senior Notes (the “2011 Notes”), through a private placement (the “2011 Note Offering”). Amounts under the agreement are due in a balloon payment on the January 2021 maturity date. Pursuant to the 2011 Agreement, the Company's payment obligations with respect to the 2011 Notes may be accelerated under certain circumstances. 2008 Senior Notes On March 31, 2008, the Company entered into a Note Purchase Agreement (the “Note Purchase Agreement”) pursuant to which the Company issued $100.0 million aggregate principal amount of its 6.24% unsecured Senior Notes (the “2008 Notes”) through a private placement (the “2008 Note Offering”). Amounts were due under the Agreement in seven annual installments of $14.3 million commencing in March of 2012 through the March 2018 maturity date. Pursuant to the Note Purchase Agreement, the Company’s payment obligations with respect to the 2008 Notes may be accelerated upon any Event of Default, as defined in the Note Purchase Agreement. The 2008 Notes and the 2011 Notes each provide for various financial covenants requiring the Company, among other things, to a) maintain on a consolidated basis net worth equal to at least the sum of $116.9 million plus 50.0% of future net income; b) maintain a ratio of indebtedness to EBITDA (as defined in Note Purchase Agreement) not to exceed 3.25 :1.00; c) maintain on a consolidated basis a Fixed Charge Coverage Ratio (as defined in the Note Purchase Agreement) of at least 2.0 :1.0; d) not at any time permit the aggregate amount of all Priority Indebtedness (as defined in the Note Purchase Agreement) to exceed 10.0% of Consolidated Net Worth (as defined in the Note Purchase Agreement). 2017 Term Note and Revolving Credit Facility On March 27, 2013, the Company entered into a Credit Agreement (the “Credit Agreement”) with Bank of America and other lenders. The Credit Agreement provided for a $75.0 million term facility and a $225.0 million revolving credit facility that included a $75.0 million “accordion” feature. The Credit Agreement is used to provide for working capital needs, capital improvements, dividends, future acquisitions and letter of credit needs. On March 21, 2017, the Company executed the Amended and Restated Credit Agreement (the “2017 Credit Agreement”) with Bank of America and other lenders. The 2017 Credit Agreement amended the Credit Agreement entered into on March 27, 2013 by the following: (i) extending the maturity date until March 21, 2022, (ii) providing for a senior revolving credit facility in a principal amount of up to $450 million , with an additional $150 million accordion, (iii) including a $75 million sublimit for the issuance of standby and commercial letters of credit, (iv) including a $30 million sublimit for swing line loans, (v) restricting indebtedness incurred in respect of capital leases, synthetic lease obligations and purchase money obligations not to exceed $20 million , (vi) restricting investments in any foreign subsidiaries not to exceed $50 million in the aggregate, and (vii) including various financial covenants and certain restricted payments relating to dividends and share repurchases as specifically set forth in the 2017 Credit Agreement. The balance due on the $75.0 million term facility under the previous Credit Agreement was paid in full as a result of the execution of the 2017 Credit Agreement. The financial covenants, as defined in the 2017 Credit Agreement, require the Company to maintain on a consolidated basis a Leverage Ratio not to exceed 3.25 :1.0 and an Interest Coverage Ratio of at least 3.00 :1.0. The 2017 Credit Agreement will be used to finance working capital needs, capital improvements, dividends, future acquisitions, letter of credit needs and share repurchases. Interest rates for borrowings under the 2017 Credit Agreement are based on either a Eurodollar Rate or a Base Rate plus a margin ranging from 0.875% to 1.875% depending on our Leverage Ratio (as defined in the 2017 Credit Agreement). The Eurodollar Rate is defined as LIBOR for a term equivalent to the borrowing term (or other similar interbank rates if LIBOR is unavailable). The Base Rate is defined as the highest of the applicable Fed Funds rate plus 0.50% , the Prime rate, or the Eurodollar Rate plus 1.0% at the time of borrowing. The 2017 Credit Agreement also carries a Commitment Fee for the unfunded portion ranging from 0 .175% to 0 .30% per annum, depending on our Leverage Ratio. The effective interest rate was 3.33% as of February 28, 2018 . As of February 28, 2018 , we had $162.0 million of outstanding debt against the revolving credit facility and letters of credit outstanding in the amount of $22.4 million , which left approximately $265.6 million of additional credit available under the 2017 Credit Agreement. As of February 28, 2018 , the Company was in compliance with all of its debt covenants. Maturities of debt are as follows (in thousands): Fiscal year: Future Debt Maturities 2019 $ 14,286 2020 — 2021 125,000 2022 — 2023 162,000 Thereafter — Total $ 301,286

Operating segments (Notes)

Operating segments (Notes)	12 Months Ended
	Feb. 28, 2018
Segment Reporting [Abstract]
Operating segments	Operating Segments Segment Information Information about segments during the periods presented were as follows (in thousands): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Net sales: Energy $ 421,033 $ 488,002 $ 487,038 Metal Coatings 389,397 375,536 402,362 Total net sales $ 810,430 $ 863,538 $ 889,400 Operating income (loss): Energy $ (1,766 ) $ 52,577 $ 56,478 Metal Coatings 84,332 79,033 94,766 Corporate (34,318 ) (32,702 ) (30,949 ) Total operating income $ 48,248 $ 98,908 $ 120,295 Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Depreciation and amortization: Energy $ 19,996 $ 19,624 $ 19,131 Metal Coatings 28,617 28,650 26,863 Corporate 1,913 2,083 1,423 Total $ 50,526 $ 50,357 $ 47,417 Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Expenditures for acquisitions, net of cash, and property, plant and equipment: Energy $ 32,903 $ 31,474 $ 12,863 Metal Coatings 39,474 32,099 86,724 Corporate 2,020 540 858 Total $ 74,397 $ 64,113 $ 100,445 February 28, 2018 February 28, 2017 Assets: Energy $ 554,866 $ 536,557 Metal Coatings 460,575 428,330 Corporate 12,768 13,467 Total assets $ 1,028,209 $ 978,354 Financial Information About Geographical Areas Financial information about geographical areas for the periods presented was as follows (in thousands): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Geographic net sales: United States $ 654,336 $ 705,976 $ 710,767 Other countries 157,280 157,718 179,832 Eliminations (1,186 ) (156 ) (1,199 ) Total $ 810,430 $ 863,538 $ 889,400 February 28, 2018 February 28, 2017 Property, plant and equipment, net: United States $ 194,418 $ 205,079 Canada 18,254 18,002 Other Countries 4,183 5,529 Total $ 216,855 $ 228,610

Commitments and Contingencies (

Commitments and Contingencies (Notes)	12 Months Ended
	Feb. 28, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and Contingencies Legal On January 11, 2018, Logan Mullins, acting on behalf of himself and a putative class of persons who purchased or otherwise acquired the Company's securities between April 22, 2015 and January 8, 2018, filed a class action complaint in the U.S. District Court for the Northern District of Texas against the Company and two of its executive officers, Thomas E. Ferguson and Paul W. Fehlman. Logan Mullins v. AZZ, Inc., et al., Case No. 4:18-cv-00025-Y. The complaint alleges, among other things, that the Company's SEC filings contained statements that were rendered materially false and misleading by the Company's alleged failure to properly recognize revenue related to certain contracts in its Energy Segment in purported violation of (1) Section 10(b) of the Exchange Act and Rule 10b-5 and (2) Section 20(a) of the Exchange Act. The plaintiffs seek an award of compensatory and punitive damages, interests, attorneys' fees and costs. The Company denies the allegations and believes it has strong defenses to vigorously contest them. The Company cannot predict the outcome of this action nor when it will be resolved. If the plaintiffs were to prevail in this matter, the Company could be liable for damages, which could potentially be material and could adversely affect its financial condition or results of operations. In addition, the Company and its subsidiaries are named defendants in various routine lawsuits incidental to our business. These proceedings include labor and employment claims, use of the Company’s intellectual property, worker’s compensation and various environmental matters, all arising in the normal course of business. Although the outcome of these lawsuits or other proceedings cannot be predicted with certainty, and the amount of any potential liability that could arise with respect to such lawsuits or other matters cannot be predicted at this time, management, after consultation with legal counsel, does not expect liabilities, if any, from these claims or proceedings, either individually or in the aggregate, to have a material effect on the Company’s financial position, results of operations or cash flows. Leases The Company is obligated under various operating leases for property, plant and equipment. As February 28, 2018 , future minimum lease payments under non-cancelable operating leases with initial terms in excess of one year are summarized in the below table (in thousands): Fiscal year: Future Minimum Lease Obligations 2019 $ 7,336 2020 6,053 2021 5,057 2022 4,924 2023 4,781 Thereafter 25,017 Total $ 53,168 Rent expense was $13.9 million , $17.0 million and $13.9 million for fiscal years 2018 , 2017 and 2016 , respectively. Rent expense includes various equipment rentals that do not meet the terms of a non-cancelable lease or that have initial terms of less than one year. Commodity pricing We have no contracted commitments for any commodities including steel, aluminum, natural gas, cooper, zinc, nickel based alloys, except for those entered into under the normal course of business. Other At February 28, 2018 , the Company had outstanding letters of credit in the amount of $37.6 million , with $ 22.4 million issued under the 2017 Credit Agreement and $15.2 million issued by HSBC Bank (China). These letters of credit are issued for a number of reasons, but are most commonly issued in lieu of customer retention withholding payments covering warranty or performance periods. In addition, as of February 28, 2018 , a warranty reserve in the amount of $2.0 million was established to offset any future warranty claims.

Quarterly Financial Information

Quarterly Financial Information, Unaudited (Notes)	12 Months Ended
	Feb. 28, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly financial information, Unaudited	Selected Quarterly Financial Data (Unaudited) Quarter ended May 31, August 31, November 30, February 28, (in thousands, except per share data) Net sales $ 205,283 $ 196,329 $ 208,158 $ 200,660 Gross profit 47,382 43,800 31,117 38,010 Net income 12,062 9,786 (166 ) 23,487 Basic earnings (loss) per share 0.46 0.38 (0.01 ) 0.91 Diluted earnings (loss) per share 0.46 0.38 (0.01 ) 0.90 Quarter ended May 31, August 31, November 30, February 28, (in thousands, except per share data) Net sales $ 250,366 $ 200,790 $ 228,116 $ 184,266 Gross profit 65,128 42,104 51,297 46,803 Net income 22,189 10,159 16,646 12,270 Basic earnings per share 0.86 0.39 0.64 0.47 Diluted earnings per share 0.85 0.39 0.64 0.47

Acquisitions

Acquisitions	12 Months Ended
	Feb. 28, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions On February 1, 2018, the Company completed the acquisition of all the assets and outstanding shares of Rogers Brothers Company ("Rogers Brothers"), a privately held company, based in Rockford, Illinois. Rogers Brothers provides galvanizing services to a multi-state area within the Midwest. The acquisition supports AZZ's goal of continued geographic expansion as well as portfolio expansion of its metal coatings services. The goodwill arising from this acquisition was allocated to the Metal Coatings Segment and is not deductible for income tax purposes. On September 6, 2017, the Company completed the acquisition of all the assets and outstanding shares of Powergrid Solutions, Inc. ("PSI"), a privately held company, based in Oshkosh, Wisconsin. PSI designs, engineers and manufactures customized low and medium-voltage power quality, power generation and distribution equipment. PSI’s product portfolio includes metal-enclosed, metal-clad and padmount switchgear, serving the utility, commercial, industrial and renewable energy markets since 1982. The acquisition of PSI is a key addition to the Company's electrical switchgear portfolio. The addition of PSI’s low-voltage and padmount switchgear allows AZZ to offer a comprehensive portfolio of customized switchgear solutions to both existing and new customers in a diverse set of industries. The goodwill arising from this acquisition was allocated to the Energy Segment and is deductible for income tax purposes. On June 30, 2017, the Company completed the acquisition of the assets of Enhanced Powder Coating Ltd., (“EPC”), a privately held, high specification, National Aerospace and Defense Contractors Accreditation Program, ("NADCAP"), certified provider of powder coating, plating and anodizing services based in Gainesville, Texas. EPC, founded in 2003, offers a full spectrum of finish technology including powder coating, abrasive blasting and plating for heavy industrial, transportation, aerospace and light commercial industries. The acquisition of EPC is consistent with the Company's strategic initiative to grow its Metal Coatings segment with products and services that complement its industry-leading galvanizing business. The goodwill arising from this acquisition was allocated to the Metal Coatings Segment and is deductible for income tax purposes. On March 1, 2016, the Company completed an acquisition of the equity securities of Power Electronics, Inc. ("PEI"), a Millington, Maryland-based manufacturer and integrator of electrical enclosure systems. The acquisition of PEI will enhance our capacity to serve existing and new customers in a diverse set of industries along the Eastern seaboard of the United States. The goodwill arising from this acquisition was allocated to the Energy Segment and is deductible for income tax purposes. On February 1, 2016, the Company completed its acquisition of substantially all the assets of Alpha Galvanizing Inc., an Atkinson, Nebraska-based business unit of Olson Industries, Inc. ("Alpha Galvanizing"). Alpha Galvanizing has served steel fabrication customers that manufacture electrical utility poles, agricultural machinery and industrial manufacturing components since 1996. Alpha Galvanizing was acquired to expand the footprint of AZZ Metal Coatings and to support AZZ’s locations in Minnesota and Denver, Colorado, as well as serve customers in the upper Midwest region. The goodwill arising from this acquisition was allocated to the Metal Coatings Segment and is deductible for income tax purposes. On June 5, 2015, the Company completed the acquisition of substantially all the assets of US Galvanizing, LLC, a provider of steel corrosion coating services and a wholly-owned subsidiary of Trinity Industries, Inc. The acquisition of the US Galvanizing, LLC assets includes six galvanizing facilities located in Hurst, Texas; Kennedale, Texas; Big Spring, Texas; San Antonio, Texas; Morgan City, Louisiana; and Kosciusko, Mississippi. Additionally, the transaction includes Texas Welded Wire, a secondary business integrated within US Galvanizing's Hurst, Texas facility. US Galvanizing, LLC was acquired to expand AZZ’s Southern locations. The goodwill arising from this acquisition was allocated to the Metal Coatings Segment and is deductible for income tax purposes. The Company paid $44.8 million , $22.7 million and $60.6 million , for these acquisitions, net of cash acquired, during fiscal 2018 , 2017 and 2016 , respectively. These acquisitions were not significant individually or in the aggregate for any fiscal year. Accordingly, disclosures of the purchase price allocations and unaudited pro forma results of operations have not been provided.

Subsequent Events (Notes)

Subsequent Events (Notes)	12 Months Ended
	Feb. 28, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On March 12, 2018, the Company purchased certain assets through a bankruptcy sales process from Lectrus Corporation, a privately-held corporation based in Chattanooga, Tennessee. Lectrus designs and manufactures custom metal enclosures and provides electrical and mechanical integration. The acquisition will complement AZZ's current metal enclosure and switchgear businesses. On March 31, 2018, the Company made the final principal payment of $14.3 million to fully settle the 2008 Senior Notes on the scheduled maturity date.

Schedule II _ Valuation and Qua

Schedule II : Valuation and Qualiying Accounts and Reserves (Notes)	12 Months Ended
	Feb. 28, 2017
Valuation and Qualifying Accounts [Abstract]
Schedule II : Valuation and Qualifying Accounts and Reserves	Schedule II AZZ Inc. Valuation and Qualifying Accounts and Reserves (In thousands) Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Allowance for Doubtful Accounts Balance at beginning of year $ 347 $ 264 $ 1,472 Additions (reductions) charged or credited to income 3,290 48 (1,072 ) (Write offs) recoveries, net (3,084 ) 20 (176 ) Other 16 11 48 Effect of exchange rate — 4 (8 ) Balance at end of year $ 569 $ 347 $ 264

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Feb. 28, 2018
Accounting Policies [Abstract]
Basis of consolidation	Organization AZZ Inc. (the “Company” “AZZ” or “We”) operates primarily in the United States of America and Canada and also has operations in China, Brazil, Poland and the Netherlands. Information about the Company's operations by segment is included in Note 13 to the consolidated financial statements. Basis of consolidation The consolidated financial statements were prepared in accordance with the accounting principles generally accepted in the United States of America and include the accounts of the Company and its wholly owned subsidiaries. All significant inter-company accounts and transactions have been eliminated in consolidation.
Use of estimates	Use of estimates The preparation of the financial statements in conformity with generally accepted accounting principles in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Concentration of credit risk	Concentrations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents and trade accounts receivable. The Company maintains cash and cash equivalents with various financial institutions. These financial institutions are located throughout the United States and Canada, as well as Europe, China and Brazil. The Company's policy is designed to limit exposure to any one institution. The Company performs periodic evaluations of the relative credit standing of those financial institutions that are considered in the Company's banking relationships and has not experienced any losses in such accounts. We believe we are not exposed to any significant credit risk related to cash and cash equivalents. Concentrations of credit risk with respect to trade accounts receivable are limited due to the Company’s diversity by virtue of two operating segments, the number of customers, and the absence of a concentration of trade accounts receivable in a small number of customers. The Company performs continuous evaluations of the collectibility of trade accounts receivable and allowance for doubtful accounts based upon historical losses, economic conditions and customer specific events. After all collection efforts are exhausted and an account is deemed uncollectible, it is written off against the allowance for doubtful accounts. Collateral is usually not required from customers as a condition of sale.
Revenue recognition	Revenue recognition The Company recognizes revenue for the Energy Segment upon transfer of title and risk to customer or based upon the percentage of completion method of accounting for electrical products built to customer specifications and services under long-term contracts. We typically recognize revenue for the Metal Coatings Segment at completion of the service unless we specifically agree with the customer to hold its material for a predetermined period of time after the completion of the galvanizing process and, in that circumstance, we invoice and recognize revenue upon shipment. Customer advanced payments presented in the balance sheets arise from advanced payments received from our customers prior to shipment of the product and are not related to revenue recognized under the percentage of completion method. The extent of progress for revenue recognized using the percentage of completion method is measured by the ratio of contract costs incurred to date to total estimated contract costs at completion. Contract costs include direct labor and material and certain indirect costs. Selling, general and administrative costs are charged to expense as incurred. Provisions for estimated losses, if any, on uncompleted contracts are made in the period in which such losses are able to be determined. The assumptions made in determining the estimated cost could differ from actual performance resulting in a different outcome for profits or losses than anticipated.
Cash and cash equivalents	Cash and cash equivalents The Company considers cash and cash equivalents to include cash on hand, deposits with banks and all highly liquid investments with an original maturity of three months or less.
Inventories	Inventories Inventory is stated at the lower of cost or net realizable value. Cost is determined principally using a weighted-average method for the Energy Segment and the first-in-first-out (FIFO) method for the Metal Coatings Segment. The Company evaluates its ending inventories for excess quantities and obsolescence based on forecasted demand within specific time horizons, technological obsolescence, and an assessment of any inventory that is not in sellable condition.
Property, plant and equipment	Property, plant and equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows: Buildings and structures 10-25 years Machinery and equipment 3-15 years Furniture and fixtures 3-15 years Automotive equipment 3 years Computers and software 3 years Repairs and maintenance are charged to expense as incurred; renewals and betterments that significantly extend the useful life of the asset are capitalized.
Intangible assets	mortizable Intangible and Long-lived assets Purchased intangible assets on the consolidated balance sheets are comprised of customer lists, backlogs, engineering drawings and non-compete agreements. Such intangible assets (excluding indefinite-lived intangible assets) are being amortized on a straight-line basis over the estimated useful lives of the assets ranging from two to nineteen years.
Long-lived assets	The Company records impairment losses on long-lived assets, including identifiable intangible assets, when events and circumstances indicate that the assets might be impaired and the undiscounted projected cash flows associated with those assets are less than their carrying amount. In those situations, impairment loss on a long-lived asset is measured based on the excess of the carrying amount of the asset over the asset’s fair value.
Goodwill	Goodwill and Other Indefinite-Lived Intangible Assets Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Goodwill is not subject to amortization but is subject to an annual impairment test during the fourth quarter of each fiscal year, or earlier if indicators of potential impairment exist. The test is calculated using an income approach. Based on the present value of the future cash flows, the Company determines whether an impairment may exist. A significant change in projected cash flows or cost of capital for future years could result in an impairment of goodwill in future years. Variables impacting future cash flows include, but are not limited to, the level of customer demand for and response to products and services we offer to the power generation market, the electrical transmission and distribution markets, the general industrial market and the hot dip galvanizing market; changes in economic conditions of these various markets; raw material and natural gas costs and availability of experienced labor and management to implement our growth strategies. For fiscal year 2018, 2017 and 2016 no goodwill impairment loss was recorded. Other indefinite-lived intangible assets consist of certain tradenames acquired as part of the Powergrid Solutions and Enhanced Powder Coating acquisitions during fiscal year 2018. The Company will test the carrying value of these tradenames during the fourth quarter of each fiscal year, or more frequently when an event occurs or circumstances change that indicates the carrying value may not be recoverable by comparing the asset's fair value to its carrying value. Fair value is measured using a relief-from-royalty approach, which assumes the fair value of the tradename is the discounted cash flows of the amount that would be paid had the Company not owned the tradename and instead licensed the tradename from another company.
Debt issue costs	Debt issuance costs Debt issue costs related to the revolver are deferred within other assets and are amortized using the effective interest rate method over the term of the debt. Debt issue costs related to debt other than the revolver are deferred within total debt due after one year and are amortized using the effective interest rate method over the term of the debt.
Income taxes	Income taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company recognizes a valuation allowance against net deferred tax assets to the extent that the Company believes these net assets are not more likely than not to be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. As applicable, the Company records uncertain tax positions in accordance with GAAP on the basis of a two-step process whereby (1) the Company determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company currently does not have any unrecognized tax benefits to record related to U.S. federal, state or, foreign tax exposure. The Company continues to review its tax exposure for any significant need to record unrecognized tax benefits in the future. The Company is subject to taxation in the U.S. and various state, provincial and local and foreign jurisdictions. With few exceptions, as of February 28, 2018 , the Company is no longer subject to U.S. federal or state examinations by tax authorities for years before fiscal 2015.
Stock-based compensation	Share-based compensation The Company has granted restricted stock units awards, performance share units and stock appreciation rights for a fixed number of shares to employees and directors. A discussion of share-based compensation can be found in Note 11 to the Consolidated Financial Statements.
Financial Instruments	Financial instruments Fair value is an exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Hierarchy Levels 1, 2, or 3 are terms for the priority of inputs to valuation techniques used to measure fair value. Hierarchy Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Hierarchy Level 2 inputs are inputs other than quoted prices included with Level 1 that are directly or indirectly observable for the asset or liability. Hierarchy Level 3 inputs are inputs that are not observable in the market. The carrying amount of the Company's financial instruments (cash equivalents, accounts receivable, accounts payable, accrued liabilities and debt), excluding the Senior Notes, approximates the fair value of these instruments based upon either their short-term nature or their variable market rate of interest. As of February 28, 2018 and 2017 the fair value of the outstanding Senior Notes, as described in Note 12 to the Consolidated Financial Statements, was approximately $133.7 million and $144.4 million , respectively. These fair values were determined using the discounted cash flow at the market rate as well as the applicable market interest rates classified as Level 2 inputs.
Derivative financial instruments	Derivative financial instruments From time to time, the Company uses derivatives to manage interest rate risk. The Company’s policy is to use derivatives for risk management purposes only, which includes maintaining the ratio between the Company’s fixed and floating rate debt obligations that management deems appropriate, and prohibits entering into such contracts for trading purposes. The Company enters into derivatives only with counterparties (primarily financial institutions) which have substantial financial wherewithal to minimize credit risk. As the result of the recent global financial crisis, a number of financial institutions have failed or required government assistance, and counterparties considered substantial may develop credit risk. The amount of gains or losses from the use of derivative financial instruments has not been and is not expected to be material to the Company’s consolidated financial statements. As of February 28, 2018 , the Company had no derivative financial instruments.
Warranty reserves	Warranty reserves Within other accrued liabilities, a reserve has been established to provide for the estimated future cost of warranties on a portion of the Company’s delivered products. Management periodically reviews the reserves, and adjustments are made accordingly. A provision for warranty on products is made on the basis of the Company’s historical experience and identified warranty issues. Warranties cover such factors as non-conformance to specifications and defects in material and workmanship.
Foreign Currency Translation	Foreign Currency Translation The local currency is the functional currency for the Company’s foreign operations. Related assets and liabilities are translated into United States dollars at exchange rates existing at the balance sheet date, and revenues and expenses are translated at weighted-average exchange rates. The foreign currency translation adjustment is recorded as a separate component of shareholders’ equity and is included in accumulated other comprehensive income (loss).
Long-Term Contingent Liability	Accruals for Contingent Liabilities The Company is subject to the possibility of various loss contingencies arising in the normal course of business. The amounts the Company may record for estimated claims, such as self-insurance programs, warranty, environmental and other contingent liabilities, requires the Company to make judgments regarding the amount of expenses that will ultimately be incurred. The Company uses past history and experience and other specific circumstances surrounding these claims in evaluating the amount of liability that should be recorded. Due to the inherent limitations in estimating future events, actual amounts paid or transferred may differ from those estimates.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Feb. 28, 2018
Accounting Policies [Abstract]
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant and equipment consisted of the following (in thousands): February 28, 2018 February 28, 2017 Land $ 22,445 $ 22,360 Building and structures 152,191 139,627 Machinery and equipment 234,071 228,246 Furniture, fixtures, software and computers 25,316 25,593 Automotive equipment 3,432 2,998 Construction in progress 13,977 23,669 451,432 442,493 Less accumulated depreciation (234,577 ) (213,883 ) Net property, plant, and equipment $ 216,855 $ 228,610
Schedule of Warranty Reserve	The following is a roll-forward of amounts accrued for warranties (in thousands): Balance at February 28, 2015 $ 2,287 Warranty costs incurred (2,570 ) Additions charged to income 3,198 Balance at February 29, 2016 $ 2,915 Warranty costs incurred (1,947 ) Additions charged to income 1,130 Balance at February 28, 2017 $ 2,098 Warranty costs incurred (2,225 ) Additions charged to income 2,140 Balance at February 28, 2018 $ 2,013

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Feb. 28, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories (net) consisted of the following (in thousands): February 28, 2018 February 28, 2017 Raw materials $ 98,475 $ 80,169 Work-in-process 2,544 6,832 Finished goods 9,742 7,006 $ 110,761 $ 94,007

Property, Plant and Equipment31

Property, Plant and Equipment (Tables)	12 Months Ended
	Feb. 28, 2018
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant and equipment consisted of the following (in thousands): February 28, 2018 February 28, 2017 Land $ 22,445 $ 22,360 Building and structures 152,191 139,627 Machinery and equipment 234,071 228,246 Furniture, fixtures, software and computers 25,316 25,593 Automotive equipment 3,432 2,998 Construction in progress 13,977 23,669 451,432 442,493 Less accumulated depreciation (234,577 ) (213,883 ) Net property, plant, and equipment $ 216,855 $ 228,610

Costs and Estimated Earnings 32

Costs and Estimated Earnings On Uncompleted Contracts (Tables)	12 Months Ended
	Feb. 28, 2018
Contractors [Abstract]
Costs in Excess of Billings and Billings in Excess of Costs	Costs and estimated earnings on uncompleted contracts consisted of the following (in thousands) February 28, 2018 February 28, 2017 Costs incurred on uncompleted contracts $ 115,030 $ 127,839 Estimated earnings 57,182 53,598 172,212 181,437 Less billings to date (151,894 ) (151,792 ) $ 20,318 $ 29,645 The amounts noted above are included in the accompanying consolidated balance sheets under the following captions (in thousands): February 28, 2018 February 28, 2017 Cost and estimated earnings in excess of billings on uncompleted contracts $ 51,787 $ 50,262 Billings in excess of costs and estimated earnings on uncompleted contracts - short-term (22,698 ) (20,617 ) Billings in excess of costs and estimated earnings on uncompleted contracts - long-term (8,771 ) — $ 20,318 $ 29,645 The long-term portion of billings in excess of costs and estimated earnings on uncompleted contracts is included as a component of other long-term liabilities on the consolidated balance sheet.

Other Accrued Liabilities (Tabl

Other Accrued Liabilities (Tables)	12 Months Ended
	Feb. 28, 2018
Other Liabilities Disclosure [Abstract]
Schedule of Accrued Liabilities	Other accrued liabilities consisted of the following (in thousands): February 28, 2018 February 28, 2017 Accrued interest $ 1,649 $ 2,036 Tenant improvements 163 278 Accrued warranty 2,013 2,098 Commissions 2,801 2,483 Personnel expenses 6,493 8,251 Group medical insurance 1,905 1,969 Other 4,598 6,927 Total $ 19,622 $ 24,042

Realignment Costs (Tables)

Realignment Costs (Tables)	12 Months Ended
	Feb. 28, 2018
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	: Balance at February 28, 2015 $ 456 Realignment costs accrued 437 Cash payments (832 ) Balance at February 29, 2016 $ 61 Realignment costs accrued 1,260 Cash payments (1,014 ) Balance at February 28, 2017 $ 307 Realignment costs accrued — Cash payments (307 ) Balance at February 28, 2018 $ —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Feb. 28, 2018
Income Tax Disclosure [Abstract]
Schedule of Deferred Tax Assets and Liabilities	Significant components of the Company’s net deferred income tax liability are as follows (in thousands): February 28, 2018 February 28, 2017 Deferred income tax assets: Employee related items $ 4,532 $ 6,839 Inventories 816 1,286 Accrued warranty 432 715 Accounts receivable 299 261 Net operating loss carry forward 5,067 4,011 11,146 13,112 Less: valuation allowance (1,558 ) (648 ) Total deferred income tax assets 9,588 12,464 Deferred income tax liabilities: Depreciation methods and property basis differences (17,955 ) (27,913 ) Other assets and tax-deductible goodwill (24,537 ) (37,950 ) Total deferred income tax liabilities (42,492 ) (65,863 ) Net deferred income tax liabilities $ (32,904 ) $ (53,399 )
Schedule of Components of Income Tax Expense (Benefit)	The provision for income taxes consists of (in thousands): Year Ended February 28, February 28, February 29, 2016 Income before income taxes: Domestic $ 24,282 $ 74,972 $ 93,561 Foreign 6,617 10,325 8,814 Income before income taxes $ 30,899 $ 85,297 $ 102,375 Current provision (benefit): Federal $ 9,080 $ 23,282 $ 28,099 Foreign 1,958 2,751 2,706 State and local 964 (696 ) (337 ) Total current provision for income taxes $ 12,002 $ 25,337 $ 30,468 Deferred provision (benefit): Federal $ (25,855 ) $ (2,486 ) $ (6,560 ) Foreign 100 189 (123 ) State and local (517 ) 993 3,046 Total deferred provision for (benefit from) income taxes $ (26,272 ) $ (1,304 ) $ (3,637 ) Total provision for (benefit from) income taxes $ (14,270 ) $ 24,033 $ 26,831
Summary of Operating Loss Carryforwards	The following table summarizes the Net operating loss (NOL) carryforward (in thousands): February 28, 2018 February 28, 2017 Federal $ — $ — State $ 5,067 $ 4,011 Foreign $ — $ —
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation from the federal statutory income tax rate to the effective income tax rate is as follows: Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Statutory federal income tax rate 32.7 % 35.0 % 35.0 % Permanent differences 1.6 0.7 0.4 State income taxes, net of federal income tax benefit 0.4 0.4 (1.5 ) Benefit of Section 199 of the Code, manufacturing deduction (2.2 ) (2.3 ) (2.7 ) Valuation allowance — — (1.2 ) Stock compensation (0.5 ) (1.8 ) — Tax credits (7.7 ) (3.1 ) (3.2 ) Foreign tax rate differential (0.4 ) (0.8 ) (0.4 ) Deferred tax remeasurements (78.9 ) — — Transition tax 8.6 — — Other 0.2 0.1 (0.2 ) Effective income tax rate (46.2 )% 28.2 % 26.2 %

Goodwill and Intangible Asset36

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Feb. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in goodwill by segment for fiscal year 2018 and 2017 are as follows (in thousands): Segment February 28, Acquisitions Foreign February 28, Metal Coatings $ 109,980 $ 6,590 $ 662 $ 117,232 Energy 196,599 7,476 — 204,075 Total $ 306,579 $ 14,066 $ 662 $ 321,307 Segment February 29, Acquisitions Foreign February 28, Metal Coatings $ 109,314 $ — $ 666 $ 109,980 Energy 183,213 13,386 — 196,599 Total $ 292,527 $ 13,386 $ 666 $ 306,579
Schedule of Finite-Lived Intangible Assets by Major Class	Amortizable intangible assets consisted of the following (in thousands): February 28, 2018 February 28, 2017 Customer related intangibles $ 194,712 $ 177,514 Non-compete agreements 7,952 5,651 Trademarks 4,569 4,569 Technology 7,400 7,400 Engineering drawings 24,600 24,600 Backlog 7,600 7,600 Gross intangible assets 246,833 227,334 Less accumulated amortization (105,642 ) (88,314 ) Total, net $ 141,191 $ 139,020
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated amortization expense for the five succeeding fiscal years and thereafter is as follows (in thousands): Fiscal year: Amortization Expense 2019 $ 16,979 2020 16,457 2021 16,231 2022 16,206 2023 13,119 Thereafter 62,199 Total $ 141,191

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Feb. 28, 2018
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Numerator: Net income for basic and diluted earnings per common share $ 45,169 $ 61,264 $ 75,544 Denominator: Denominator for basic earnings per common share–weighted average shares 25,970 25,965 25,800 Effect of dilutive securities: Employee and director stock awards 66 132 137 Denominator for diluted earnings per common share 26,036 26,097 25,937 Earnings per share basic and diluted: Basic earnings per common share $ 1.74 $ 2.36 $ 2.93 Diluted earnings per common share $ 1.73 $ 2.35 $ 2.91

Stock Compensation (Tables)

Stock Compensation (Tables)	12 Months Ended
	Feb. 28, 2018
Share-based Compensation [Abstract]
Restricted Stock Unit Awards Non-Vested	ctivity for non-vested restricted stock unit awards for the year ended February 28, 2018 is as follows: Restricted Weighted Non-Vested Balance as of February 28, 2017 134,547 $ 51.10 Granted 46,436 60.01 Vested (62,576 ) 47.26 Forfeited (8,630 ) 56.64 Non-Vested Balance as of February 28, 2018 109,777 $ 56.62
Stock Appreciation Rights and Option Awards	A summary of the Company’s stock appreciation rights awards activity is as follows: Year Ended February 28, 2018 February 28, 2017 February 29, 2016 SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price Outstanding at beginning of year 170,139 $ 42.02 312,748 $ 34.23 376,982 $ 31.27 Granted — — — — — — Exercised (19,481 ) 31.94 (141,983 ) 24.85 (59,441 ) 14.67 Forfeited (2,145 ) 45.36 (626 ) 43.92 (4,793 ) 44.56 Outstanding at end of year 148,513 $ 43.29 170,139 $ 42.02 312,748 $ 34.23 Exercisable at end of year 148,513 $ 43.29 126,975 $ 41.27 217,961 $ 29.83
Share-based Compensation Activity	The following table summarizes additional information about stock appreciation rights outstanding at February 28, 2018 . Range of Total Average Weighted SARs Weighted $25.67 9,080 1.00 $ 25.67 9,080 $ 25.67 $39.65 950 2.52 $ 39.65 950 $ 39.65 $43.92 82,378 3.01 $ 43.92 82,378 $ 43.92 $45.26 40,000 2.68 $ 45.26 40,000 $ 45.26 $45.36 16,105 2.00 $ 45.36 16,105 $ 45.36 $25.67 - $45.36 148,513 2.68 $ 43.29 148,513 $ 43.29
Share-based Compensation Fair Value Assumptions
Share-based compensation expense and related income tax	Share-based compensation expense and related income tax benefits related to all the plans listed above were as follows (in thousands): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Compensation expense $ 6,121 $ 5,870 $ 4,538 Income tax benefits $ 2,122 $ 2,055 $ 1,588

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Feb. 28, 2018
Debt Disclosure [Abstract]
Schedule of Debt	February 28, 2018 February 28, 2017 2011 Senior Notes $ 125,000 $ 125,000 2008 Senior Notes 14,286 28,571 2017 Term Note — 49,219 2017 Revolving Line of Credit 162,000 69,500 Total debt 301,286 272,290 Unamortized debt issuance costs (391 ) (861 ) Total debt, net 300,895 271,429 Less amount due within one year (14,286 ) (16,629 ) Debt due after one year, net $ 286,609 $ 254,800
Schedule of Maturities of Long-term Debt	Maturities of debt are as follows (in thousands): Fiscal year: Future Debt Maturities 2019 $ 14,286 2020 — 2021 125,000 2022 — 2023 162,000 Thereafter — Total $ 301,286

Operating segments (Tables)

Operating segments (Tables)	12 Months Ended
	Feb. 28, 2018
Segment Reporting [Abstract]
Operations and assets by segment	Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Net sales: Energy $ 421,033 $ 488,002 $ 487,038 Metal Coatings 389,397 375,536 402,362 Total net sales $ 810,430 $ 863,538 $ 889,400 Operating income (loss): Energy $ (1,766 ) $ 52,577 $ 56,478 Metal Coatings 84,332 79,033 94,766 Corporate (34,318 ) (32,702 ) (30,949 ) Total operating income $ 48,248 $ 98,908 $ 120,295 Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Depreciation and amortization: Energy $ 19,996 $ 19,624 $ 19,131 Metal Coatings 28,617 28,650 26,863 Corporate 1,913 2,083 1,423 Total $ 50,526 $ 50,357 $ 47,417 Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Expenditures for acquisitions, net of cash, and property, plant and equipment: Energy $ 32,903 $ 31,474 $ 12,863 Metal Coatings 39,474 32,099 86,724 Corporate 2,020 540 858 Total $ 74,397 $ 64,113 $ 100,445 February 28, 2018 February 28, 2017 Assets: Energy $ 554,866 $ 536,557 Metal Coatings 460,575 428,330 Corporate 12,768 13,467 Total assets $ 1,028,209 $ 978,354 Financial Information About Geographical Areas Financial information about geographical areas for the periods presented was as follows (in thousands): Year Ended February 28, 2018 February 28, 2017 February 29, 2016 Geographic net sales: United States $ 654,336 $ 705,976 $ 710,767 Other countries 157,280 157,718 179,832 Eliminations (1,186 ) (156 ) (1,199 ) Total $ 810,430 $ 863,538 $ 889,400 February 28, 2018 February 28, 2017 Property, plant and equipment, net: United States $ 194,418 $ 205,079 Canada 18,254 18,002 Other Countries 4,183 5,529 Total $ 216,855 $ 228,610

Commitments and Contingencies41

Commitments and Contingencies (Tables)	12 Months Ended
	Feb. 28, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	As February 28, 2018 , future minimum lease payments under non-cancelable operating leases with initial terms in excess of one year are summarized in the below table (in thousands): Fiscal year: Future Minimum Lease Obligations 2019 $ 7,336 2020 6,053 2021 5,057 2022 4,924 2023 4,781 Thereafter 25,017 Total $ 53,168

Quarterly Financial Informati42

Quarterly Financial Information, Unaudited (Tables)	12 Months Ended
	Feb. 28, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Quarter ended May 31, August 31, November 30, February 28, (in thousands, except per share data) Net sales $ 205,283 $ 196,329 $ 208,158 $ 200,660 Gross profit 47,382 43,800 31,117 38,010 Net income 12,062 9,786 (166 ) 23,487 Basic earnings (loss) per share 0.46 0.38 (0.01 ) 0.91 Diluted earnings (loss) per share 0.46 0.38 (0.01 ) 0.90 Quarter ended May 31, August 31, November 30, February 28, (in thousands, except per share data) Net sales $ 250,366 $ 200,790 $ 228,116 $ 184,266 Gross profit 65,128 42,104 51,297 46,803 Net income 22,189 10,159 16,646 12,270 Basic earnings per share 0.86 0.39 0.64 0.47 Diluted earnings per share 0.85 0.39 0.64 0.47

Summary of Significant Accoun43

Summary of Significant Accounting Policies (Details)	12 Months Ended
	Feb. 28, 2018operating_segment
Business Acquisition [Line Items]
Number of operating segments	2

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Property, Plant, and Equipment (Details)	12 Months Ended
	Feb. 28, 2018
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	25 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	15 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Useful life	3 years

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Intangible Assets (Details)	12 Months Ended
	Feb. 28, 2018
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life	2 years
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life	19 years

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Product Warranty Roll-forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance, beginning balance	$ 2,098	$ 2,915	$ 2,287
Warranty costs incurred	(2,225)	(1,947)	(2,570)
Additions charged to income	2,140	1,130	3,198
Balance, ending balance	$ 2,013	$ 2,098	$ 2,915

Summary of Significant Accoun47

Summary of Significant Accounting Policies - Debt (Details) - Senior Notes [Member] - USD ($)	Feb. 28, 2018	Feb. 28, 2017	Jan. 21, 2011
Unsecured Senior Notes Due March 31, 2018 [Member]
Debt Instrument [Line Items]
Fair value of notes	$ 133,659,750	$ 144,350,531
Unsecured Senior Notes Due January 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount			$ 125,000,000

Summary of Significant Accoun48

Summary of Significant Accounting Policies - Hedging Transactions (Details)	12 Months Ended
	Feb. 28, 2018USD ($)
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate reclassified to earnings	$ 83,442

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 98,475	$ 80,169
Work-in-process	2,544	6,832
Finished goods	9,742	7,006
Total Inventory	$ 110,761	$ 94,007

Property, Plant and Equipment50

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 33,400	$ 33,400	$ 31,200
Property, Plant and Equipment, Gross	451,432	442,493
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(234,577)	(213,883)
Property, plant, and equipment, net	216,855	228,610
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	22,445	22,360
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	152,191	139,627
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	234,071	228,246
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	25,316	25,593
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,432	2,998
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 13,977	$ 23,669

Costs and Estimated Earnings 51

Costs and Estimated Earnings On Uncompleted Contracts - Accumulated Costs Net Of Billings (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 115,030	$ 127,839
Estimated earnings	57,182	53,598
Total costs and estimated earnings	172,212	181,437
Less billings to date	(151,894)	(151,792)
Total costs net of billings	$ 20,318	$ 29,645

- Costs Net of Billings By Bala

- Costs Net of Billings By Balance Sheet Location (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Contractors [Abstract]
Cost and estimated earnings in excess of billings on uncompleted contracts	$ 51,787	$ 50,262
Billings in excess of costs and estimated earnings on uncompleted contracts	(22,698)	(20,617)
Billings in Excess of Cost, Noncurrent	8,771	0
Total costs net of billings	$ 20,318	$ 29,645

Other Accrued Liabilities (Deta

Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Other Liabilities Disclosure [Abstract]
Accrued interest	$ 1,649	$ 2,036
Tenant improvements	163	278
Accrued warranty	2,013	2,098
Commissions	2,801	2,483
Personnel expenses	6,493	8,251
Group medical insurance	1,905	1,969
Other Sundry Liabilities, Current	4,598	6,927
Total other accrued liabilities	$ 19,622	$ 24,042

Realignment Costs (Details)

Realignment Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Aug. 01, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				$ 900
Gain (Loss) on Disposition of Assets	$ (10,834)	$ (6,602)	$ (286)
Restructuring Charges	8,000
One-time Termination Benefits [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,300	200
One-time Termination Benefits [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		200
Other Restructuring [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		200
Other Restructuring [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 6,700	$ 300

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Postemployment Benefits [Abstract]
Costs recognized for postemployement benefit plan	$ 4,755,596	$ 4,526,223	$ 4,880,251

Income Taxes - Provision of Inc

Income Taxes - Provision of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Income (loss) before income taxes:
Domestic	$ 24,282	$ 74,972	$ 93,561
Foreign	6,617	10,325	8,814
Income before income taxes	30,899	85,297	102,375
Current provision:
Federal	9,080	23,282	28,099
Foreign	1,958	2,751	2,706
State and local	964	(696)	(337)
Total current provision for income taxes	12,002	25,337	30,468
Deferred provision (benefit):
Federal	(25,855)	(2,486)	(6,560)
Foreign	100	189	(123)
State and local	(517)	993	3,046
Deferred Income Tax Expense (Benefit)	(26,272)	(1,304)	(3,637)
Total provision for income taxes	$ (14,270)	$ 24,033	$ 26,831

Income Taxes - Reconcilliation

Income Taxes - Reconcilliation of Effective Income Tax Rate (Details)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	32.70%		35.00%	35.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent	1.60%		0.70%	0.40%
State income taxes, net of federal income tax benefit	0.40%		0.40%	(1.50%)
Benefit of Section 199 of the Code, manufacturing deduction	(2.20%)		(2.30%)	(2.70%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	0.00%		0.00%	(1.20%)
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	(0.50%)	(1.80%)	0.00%
Other	0.20%		0.10%	(0.20%)
Effective income tax rate	(46.20%)		28.20%	26.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(7.70%)		(3.10%)	(3.20%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(0.40%)		(0.80%)	(0.40%)

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Deferred income tax assets:
Employee related items	$ 4,532	$ 6,839
Inventories	816	1,286
Accrued warranty	432	715
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	299	261
Net operating loss carry forward	5,067	4,011
Total deferred income tax assets	11,146	13,112
Deferred Tax Assets, Valuation Allowance	(1,558)	(648)
Deferred Tax Assets, Net of Valuation Allowance	9,588	12,464
Deferred income tax liabilities:
Depreciation methods and property basis differences	(17,955)	(27,913)
Deferred Tax Liabilities, Goodwill and Intangible Assets	(24,537)	(37,950)
Total deferred income tax liabilities	(42,492)	(65,863)
Net deferred income tax liabilities	$ (32,904)	$ (53,399)

Income Taxes - Schedule of Net

Income Taxes - Schedule of Net Operating Loss Carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 1,558	$ 648
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, tax impact	0	0
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, tax impact	5,067	4,011
Operating loss carryforwards	57,600
Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, tax impact	$ 0	$ 0

Goodwill and Intangible Asset60

Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 306,579	$ 292,527
Acquisitions	14,066	13,386
Foreign Exchange Translation	662	666
Goodwill, ending balance	321,307	306,579
Galvanizing Services [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	109,980	109,314
Acquisitions	6,590	0
Foreign Exchange Translation	662	666
Goodwill, ending balance	117,232	109,980
Energy [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	196,599	183,213
Acquisitions	7,476	13,386
Foreign Exchange Translation	0	0
Goodwill, ending balance	$ 204,075	$ 196,599

Goodwill and Intangible Asset61

Goodwill and Intangible Assets - Schedule of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Amortizable intangible assets
Finite-lived intangible assets, gross	$ 246,833	$ 227,334
Less accumulated amortization	(105,642)	(88,314)
Finite-Lived Intangible Assets, Net	141,191	139,020
Customer-Related Intangible Assets [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	194,712	177,514
Noncompete Agreements [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	7,952	5,651
Trademarks [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	4,569	4,569
Technology [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	7,400	7,400
Engineering Drawings [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	24,600	24,600
Order or Production Backlog [Member]
Amortizable intangible assets
Finite-lived intangible assets, gross	$ 7,600	$ 7,600

Goodwill and Intangible Asset62

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 105,642,000	$ 88,314,000
Amortization of intangible assets	$ 17,077,277	$ 16,926,670	$ 16,222,477

Goodwill and Intangible Asset63

Goodwill and Intangible Assets - Schedule of Future Amortization (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2,015	$ 16,979
2,016	16,457
2,017	16,231
2,018	16,206
2,019	13,119
Thereafter	62,199
Finite-Lived Intangible Assets, Net	$ 141,191	$ 139,020

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Numerator:
Net income	$ 23,487	$ (166)	$ 9,786	$ 12,062	$ 12,270	$ 16,646	$ 10,159	$ 22,189	$ 45,169	$ 61,264	$ 75,544
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)									25,970,000	25,965,000	25,800,000
Effect of dilutive securities:
Employee and Director stock awards (shares)									66,000	132,000	137,000
Denominator for diluted earnings per common share (shares)									26,036,000	26,097,000	25,937,000
Earnings per share basic and diluted:
Basic earnings per common share (usd per share)	$ 0.91	$ (0.01)	$ 0.38	$ 0.46	$ 0.47	$ 0.64	$ 0.39	$ 0.86	$ 1.74	$ 2.36	$ 2.93
Diluted earnings per common share (usd per share)	$ 0.90	$ (0.01)	$ 0.38	$ 0.46	$ 0.47	$ 0.64	$ 0.39	$ 0.85	$ 1.73	$ 2.35	$ 2.91

Stock Compensation - Non-vested

Stock Compensation - Non-vested Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Feb. 28, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-Vested Balance as of February 29, 2013 (shares) | shares	134,547
Granted (shares) | shares	46,436
Vested (shares) | shares	(62,576)
Forfeited (shares) | shares	(8,630)
Non-Vested Balance as of February 28, 2014 (shares) | shares	109,777
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-Vested Balance as of February 29, 2013, Weight Average Grant Date Fair Value (usd per share) | $ / shares	$ 51.10
Granted, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	60.01
Vested, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	47.26
Forfeited, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	56.64
Non-Vested as of February 28, 2014, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	$ 56.62

Stock Compensation - SARs and O

Stock Compensation - SARs and Option Awards Activity (Details) - Stock Appreciation Rights (SARs) [Member] - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward]
Outstanding at beginning of year (shares)	170,139	312,748	376,982
Granted (shares)	0	0	0
Exercised (shares)	(19,481)	(141,983)	(59,441)
Forfeited (shares)	(2,145)	(626)	(4,793)
Outstanding at end of year (shares)	148,513	170,139	312,748
Exercisable at end of year (shares)	148,513	126,975	217,961
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at beginning of year, Weighted Average Exercise Price (usd per share)	$ 42.02	$ 34.23	$ 31.27
Granted, Weighted Average Exercise Price (usd per share)	0	0	0
Exercised, Weighted Average Exercise Price (usd per share)	31.94	24.85	14.67
Forfeited, Weighted Average Exercise Price (usd per share)	45.36	43.92	44.56
Outstanding at end of year, Weighted Average Exercise Price (usd per share)	43.29	42.02	34.23
Exercisable at end of year, Weighted Average Exercise Price (usd per share)	$ 43.29	$ 41.27	$ 29.83

Stock Compensation - Schedule B

Stock Compensation - Schedule By Exercise Price Range (Details) - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Options/ SAR’s (shares)	148,513	170,139	312,748	376,982
Weighted Average Exercise Price, Outstanding (usd per share)	$ 43.29	$ 42.02	$ 34.23	$ 31.27
Options / SAR’s Currently Exercisable (shares)	148,513	126,975	217,961
Weighted Average Exercise Price, Exercisable (usd per share)	$ 43.29	$ 41.27	$ 29.83
$9.06 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 25.67
Total Options/ SAR’s (shares)	9,080
Average Remaining Life	1 year
Weighted Average Exercise Price, Outstanding (usd per share)	$ 25.67
Options / SAR’s Currently Exercisable (shares)	9,080
Weighted Average Exercise Price, Exercisable (usd per share)	$ 25.67
$15.84 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 39.65
Total Options/ SAR’s (shares)	950
Average Remaining Life	2 years 6 months 8 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 39.65
Options / SAR’s Currently Exercisable (shares)	950
Weighted Average Exercise Price, Exercisable (usd per share)	$ 39.65
$20.91 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 43.92
Total Options/ SAR’s (shares)	82,378
Average Remaining Life	3 years 4 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 43.92
Options / SAR’s Currently Exercisable (shares)	82,378
Weighted Average Exercise Price, Exercisable (usd per share)	$ 43.92
$25.67 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 45.26
Total Options/ SAR’s (shares)	40,000
Average Remaining Life	2 years 8 months 5 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 45.26
Options / SAR’s Currently Exercisable (shares)	40,000
Weighted Average Exercise Price, Exercisable (usd per share)	$ 45.26
$45.36 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 45.36
Total Options/ SAR’s (shares)	16,105
Average Remaining Life	2 years
Weighted Average Exercise Price, Outstanding (usd per share)	$ 45.36
Options / SAR’s Currently Exercisable (shares)	16,105
Weighted Average Exercise Price, Exercisable (usd per share)	$ 45.36
$9.06 - $45.36 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower limit (usd per share)		9.06
Exercise price range, upper limit (usd per share)		$ 46.43
$9.06 - $45.36 [Member] | Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Options/ SAR’s (shares)	148,513
Average Remaining Life	2 years 8 months 5 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 43.29
Options / SAR’s Currently Exercisable (shares)	148,513
Weighted Average Exercise Price, Exercisable (usd per share)	$ 43.29

Stock Compensation - Fair Value

Stock Compensation - Fair Value Assumptions (Details) - Stock Appreciation Rights (SARs) [Member]	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life in years	7 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected price volatilty (minimum)		35.39%	36.34%	45.00%
Expected price volatility (maximum)		40.00%	53.00%	47.83%
Risk-free interest rate (minimum)		2.32%	75.00%	59.00%
Risk-free interest rate (maximum)		2.73%	2.98%	89.00%
Employee Stock Purchase Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life in years		4 years 6 months	4 years 6 months	4 years 6 months
Expected dividend yield		1.20%	1.21%	1.76%
Employee Stock Purchase Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life in years		4 years 6 months	4 years 6 months	4 years 6 months
Expected dividend yield		1.32%	1.49%	1.95%

Stock Compensation - Share-base

Stock Compensation - Share-based Compensation and Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Share-based Compensation [Abstract]
Excess Tax Benefit excluded from cash flow	$ 162
Excess Tax Benefit from Share-based Compensation, Financing Activities	0	$ 0	$ 1,025
Share based compensation expense and related income tax benefits
Compensation Expense	6,121	5,870	4,538
Income tax benefits	$ 2,122	$ 2,055	$ 1,588

Stock Compensation (Details Tex

Stock Compensation (Details Textual)	12 Months Ended
	Feb. 28, 2018USD ($)share_based_compensation_plan$ / sharesshares	Feb. 28, 2017USD ($)$ / sharesshares	Feb. 29, 2016USD ($)$ / sharesshares	Feb. 28, 2013shares
Share Based Compensation (Textual) [Abstract]
Number of share-based compensation plans | share_based_compensation_plan	1
Shares authorized (shares) | shares	1,500,000
Share for future issuance (shares) | shares	1,304,407
Unrecognized compensation cost | $	$ 6,149,342
Unrecongized compensation cost, amortization period	1 year 7 months 30 days
Tax benefits from stock options exercised | $	$ 0	$ 0	$ 1,025,000
Employee Stock Purchase Plan [Member]
Share Based Compensation (Textual) [Abstract]
Granted option lower than	85.00%
Restricted common stock under plan | $	$ 25,000
Common stock purchased during period (shares) | shares	5,000
Directors Grants [Member]
Share Based Compensation (Textual) [Abstract]
Shares of company common stock (shares) | shares	2,040	1,641	1,915	1,000
Value of common stock grants (usd per share) | $ / shares	$ 49	$ 60.94	$ 52.21
Restricted Stock Units (RSUs) [Member]
Share Based Compensation (Textual) [Abstract]
Vesting ratably term	3 years
Total fair value of vested shares | $	$ 3,000,000	$ 1,618,996	$ 897,712
Non-vested shares outstanding (shares) | shares	109,777	134,547	98,693
Non-vested shares outstanding, weighted average grant date fair value (usd per share) | $ / shares	$ 56.62	$ 51.10	$ 41.31
Stock Appreciation Rights (SARs) [Member]
Share Based Compensation (Textual) [Abstract]
Vesting ratably term	3 years
Term for the contract	7 years
Outstanding average contractual term	2 years 8 months 5 days
Outstanding aggregate intrinsic value | $	$ 100,000

Stock Compensation Performance

Stock Compensation Performance Share Units (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 60.20
Non-vested shares outstanding, weighted average grant date fair value (usd per share)	$ 54.59	$ 51.70
Non-vested shares outstanding (shares)	70,030	51,426
Granted (shares)	26,157
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(7,553)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 54.31

Long-term Debt - Schedule of L

Long-term Debt - Schedule of Long-term Debt (Details) - USD ($)	Mar. 31, 2008	Feb. 29, 2016	Feb. 28, 2018	Feb. 28, 2017
Debt Instrument [Line Items]
Total			$ 300,895,000	$ 271,429,000
Debt, Current		$ 16,629,000	14,286,000	16,629,000
Total			301,286,000	272,290,000
Unamortized Debt Issuance Expense			(391,000)	(861,000)
Long-term debt, exculding current maturities		254,800,000	286,609,000	254,800,000
Senior Notes [Member] | Unsecured Senior Notes Due January 2021 [Member]
Debt Instrument [Line Items]
Total			125,000,000	125,000,000
Senior Notes [Member] | Unsecured Senior Notes Due March 2012 through March 2018 [Member]
Debt Instrument [Line Items]
Total			14,286,000	28,571,000
Annual installments	$ 14,300,000	$ 14,285,714
Medium-term Notes [Member]
Debt Instrument [Line Items]
Total			0	49,219,000
Line of Credit [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Total			$ 162,000,000	$ 69,500,000

Long-term Debt - Narrative (De

Long-term Debt - Narrative (Details)	Mar. 27, 2013USD ($)	Mar. 31, 2008USD ($)annual_installment	Feb. 28, 2018USD ($)	Feb. 28, 2017USD ($)	Feb. 29, 2016USD ($)	Feb. 28, 2014USD ($)	Jan. 21, 2011USD ($)
Debt Instrument [Line Items]
Long-term Debt			$ 300,895,000	$ 271,429,000
Repayments of long term debt			63,504,000	23,192,000	$ 21,786,000
Senior Notes [Member] | Unsecured Senior Notes Due March 2012 through March 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt			14,286,000	28,571,000
Covenant, net worth minimum					$ 116,900,000
Covenant, minimum retention of future income					50.00%
Covenant, minimum fixed charge coverage ratio					2
Debt instrument, face amount		$ 100,000,000
Debt instrument, stated percentage		6.24%
Number of annual installments | annual_installment		7
Annual installments		$ 14,300,000			$ 14,285,714
Covenant, minimum ratio of indebtedness to EBIDTA					3.25
Covenant, maximum percentage of priority indebtedness					10.00%
Senior Notes [Member] | Unsecured Senior Notes Due January 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt			125,000,000	125,000,000
Covenant, net worth minimum			$ 116,900,000
Covenant, minimum retention of future income			50.00%
Covenant, minimum fixed charge coverage ratio			2
Debt instrument, face amount							$ 125,000,000
Debt instrument, stated percentage							5.42%
Covenant, minimum ratio of indebtedness to EBIDTA			3.25
Covenant, maximum percentage of priority indebtedness			10.00%
Bank Of America And Other Lenders [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Accordion feature	$ 75,000,000
Bank Of America And Other Lenders [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	450,000,000
Accordion feature	150,000,000
Covenant, maximum capital lease obligations	20,000,000
Covenant, maximum investments in foreign subsidiaries	$ 50,000,000
Covenant, maximum leverage ratio	3.25
Covenant, minimum fixed charge coverage ratio	3
Repayments of long term debt	$ 75,000,000
Revolving Credit Facility [Member] | Bank of America [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Amount outstanding on line of credit						$ 0
Letters of credit outstanding			$ 22,400,000
Remaining borrowing capacity on line of credit			$ 265,600,000
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	225,000,000
Accordion feature	$ 30,000,000
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member] | Maximum [Member]
Debt Instrument [Line Items]
Variable rate description	Eurodollar
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member] | Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread			1.00%
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member] | Eurodollar [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread			0.875%
Commitment fees	0.175%
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member] | Eurodollar [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread			1.875%
Commitment fees	0.30%
Revolving Credit Facility [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Basis spread			0.50%
Line of Credit [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 162,000,000	$ 69,500,000
Line of Credit [Member] | Bank Of America And Other Lenders [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75,000,000
Accordion feature	$ 75,000,000

Long-term Debt - Schedule of74

Long-term Debt - Schedule of Long-term Debt Maturities (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Debt Disclosure [Abstract]
2,019	$ 14,286
2,020	0
2,021	125,000
2,022	0
2,023	162,000
Thereafter	0
Total	$ 301,286	$ 272,290

Operating segments (Details)

Operating segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Operations and assets by segment
Net sales	$ 200,660	$ 208,158	$ 196,329	$ 205,283	$ 184,266	$ 228,116	$ 200,790	$ 250,366	$ 810,430	$ 863,538	$ 889,400
Operating Income (Loss)									48,248	98,908	120,295
Depreciation									50,526	50,357	47,417
Payments to acquire property, plant, equipment and acquire businesses, net of cash									74,397	64,113	100,445
Assets	1,028,209				978,354				1,028,209	978,354
Property, Plant and Equipment, Net	216,855				228,610				216,855	228,610
Energy [Member]
Operations and assets by segment
Net sales									421,033	488,002	487,038
Operating Income (Loss)									(1,766)	52,577	56,478
Depreciation									19,996	19,624	19,131
Payments to acquire property, plant, equipment and acquire businesses, net of cash									32,903	31,474	12,863
Assets	554,866				536,557				554,866	536,557
Galvanizing Services [Member]
Operations and assets by segment
Net sales									389,397	375,536	402,362
Operating Income (Loss)									84,332	79,033	94,766
Depreciation									28,617	28,650	26,863
Payments to acquire property, plant, equipment and acquire businesses, net of cash									39,474	32,099	86,724
Assets	460,575				428,330				460,575	428,330
Corporate, Non-Segment [Member]
Operations and assets by segment
Operating Income (Loss)									(34,318)	(32,702)	(30,949)
Depreciation									1,913	2,083	1,423
Payments to acquire property, plant, equipment and acquire businesses, net of cash									2,020	540	858
Assets	12,768				13,467				12,768	13,467
UNITED STATES
Operations and assets by segment
Net sales									654,336	705,976	710,767
Property, Plant and Equipment, Net	194,418				205,079				194,418	205,079
Non-US [Member]
Operations and assets by segment
Property, Plant and Equipment, Net	4,183				5,529				4,183	5,529
Geography Eliminations [Member]
Operations and assets by segment
Net sales									(1,186)	(156)	(1,199)
CANADA
Operations and assets by segment
Property, Plant and Equipment, Net	$ 18,254				$ 18,002				18,254	18,002
Other Countries [Member]
Operations and assets by segment
Net sales									$ 157,280	$ 157,718	$ 179,832

Commitments and Contingencies76

Commitments and Contingencies (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Commitments and Contingencies Disclosure [Abstract]
Minimum operating lease term	1 year
Rent expense	$ 13,869,000	$ 17,010,000	$ 13,871,412

Commitments and Contingencies -

Commitments and Contingencies - Schedule Of Future Operating Lease Expenses (Details) $ in Thousands	Feb. 28, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,015	$ 7,336
2,016	6,053
2,017	5,057
2,018	4,924
2,019	4,781
Thereafter	25,017
Total	$ 53,168

Commitments and Contingencies78

Commitments and Contingencies - Product Warranty Accrual (Details) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Loss Contingencies [Line Items]
Reserve for warranty	$ 2,013	$ 2,098	$ 2,915	$ 2,287
Accrued warranty	2,013	$ 2,098
Energy [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 37,600

Quarterly Financial Informati79

Quarterly Financial Information, Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 200,660	$ 208,158	$ 196,329	$ 205,283	$ 184,266	$ 228,116	$ 200,790	$ 250,366	$ 810,430	$ 863,538	$ 889,400
Gross profit	38,010	31,117	43,800	47,382	46,803	51,297	42,104	65,128	160,309	205,332	228,118
Net income	$ 23,487	$ (166)	$ 9,786	$ 12,062	$ 12,270	$ 16,646	$ 10,159	$ 22,189	$ 45,169	$ 61,264	$ 75,544
Basic earnings per common share (usd per share)	$ 0.91	$ (0.01)	$ 0.38	$ 0.46	$ 0.47	$ 0.64	$ 0.39	$ 0.86	$ 1.74	$ 2.36	$ 2.93
Diluted earnings per common share (usd per share)	$ 0.90	$ (0.01)	$ 0.38	$ 0.46	$ 0.47	$ 0.64	$ 0.39	$ 0.85	$ 1.73	$ 2.35	$ 2.91

Schedule II _ Valuation and Q80

Schedule II : Valuation and Qualiying Accounts and Reserves (Details) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Allowance for Doubtful Accounts
Balance at Beginning of year	$ 347	$ 264	$ 1,472
Valuation Allowances and Reserves, Adjustments	3,290	48	(1,072)
Valuation Allowances and Reserves, Deductions	(3,084)	20	(176)
Valuation Allowances and Reserves, Period Increase (Decrease)	0	4	(8)
Balance at end of year	569	347	264
Valuation Allowances and Reserves, Adjustments	$ 16	$ 11	$ 48