Wabash National (WNC) 10-Q 30 Oct 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 25, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Entity Registrant Name	WABASH NATIONAL CORP /DE
Entity Central Index Key	879,526
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	WNC
Entity Common Stock, Shares Outstanding		56,034,243
Entity Emerging Growth Company	false
Entity Small Business	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 104,121	$ 191,521
Accounts receivable	187,558	146,836
Inventories	232,450	180,735
Prepaid expenses and other	72,558	57,299
Total current assets	596,687	576,391
PROPERTY, PLANT AND EQUIPMENT	198,876	195,363
GOODWILL	311,044	317,464
INTANGIBLE ASSETS	215,136	237,030
OTHER ASSETS	28,464	25,265
Total Assets	1,350,207	1,351,513
CURRENT LIABILITIES
Current portion of long-term debt	1,880	46,020
Current portion of capital lease obligations	294	290
Accounts payable	185,938	108,448
Other accrued liabilities	120,310	128,910
Total current liabilities	308,422	283,668
LONG-TERM DEBT	503,309	504,091
CAPITAL LEASE OBLIGATIONS	792	1,012
DEFERRED INCOME TAXES	36,766	36,955
OTHER NONCURRENT LIABILITIES	21,031	19,724
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock 200,000,000 shares authorized, $0.01 par value, 56,034,243 and 57,564,493 shares outstanding, respectively	744	737
Additional paid-in capital	627,348	653,435
Retained earnings	143,125	98,728
Accumulated other comprehensive losses	(2,445)	(2,385)
Treasury stock at cost, 18,471,604 and 16,207,740 common shares, respectively	(288,885)	(244,452)
Total stockholders' equity	479,887	506,063
Total Liabilities and Equity	$ 1,350,207	$ 1,351,513

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares outstanding	56,034,243	57,564,493
Treasury stock, shares	18,471,604	16,207,740

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
NET SALES	$ 553,073	$ 425,098	$ 1,657,082	$ 1,223,717
COST OF SALES	487,911	364,134	1,442,487	1,035,718
Gross profit	65,162	60,964	214,595	187,999
GENERAL AND ADMINISTRATIVE EXPENSES	23,033	16,075	73,920	53,511
SELLING EXPENSES	8,690	5,497	25,591	17,568
AMORTIZATION OF INTANGIBLES	4,937	4,097	14,818	12,693
ACQUISITION EXPENSES	0	8,704	68	8,704
IMPAIRMENT	11,989	0	11,989	0
Income from operations	16,513	26,591	88,209	95,523
OTHER INCOME (EXPENSE):
Interest expense	(7,044)	(3,187)	(21,649)	(9,065)
Other, net	533	6,271	12,486	7,929
Income before income taxes	10,002	29,675	79,046	94,387
INCOME TAX EXPENSE	5,338	10,728	21,209	32,321
Net income	$ 4,664	$ 18,947	$ 57,837	$ 62,066
DIVIDENDS DECLARED PER SHARE	$ 0.075	$ 0.06	$ 0.225	$ 0.18
BASIC NET INCOME PER SHARE	0.08	0.32	1.01	1.04
DILUTED NET INCOME PER SHARE	$ 0.08	$ 0.30	$ 0.98	$ 0.99

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
NET INCOME	$ 4,664	$ 18,947	$ 57,837	$ 62,066
Other comprehensive income (loss):
Foreign currency translation adjustment	200	57	74	829
Unrealized holding gain (loss) on investments	6	0	(103)	0
Unrealized gain (loss) on derivative instruments	(31)	0	(31)	0
Total other comprehensive income (loss)	175	57	(60)	829
COMPREHENSIVE INCOME	$ 4,839	$ 19,004	$ 57,777	$ 62,895

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income	$ 57,837	$ 62,066
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	15,701	12,709
Amortization of intangibles	14,818	12,693
Net gain on sale of property, plant and equipment	(10,164)	(8,060)
Loss on debt extinguishment	174	767
Deferred income taxes	(122)	59
Stock-based compensation	8,479	8,311
Impairment	11,989	0
Non-cash interest expense	1,426	1,569
Changes in operating assets and liabilities
Accounts receivable	(48,531)	26,185
Inventories	(66,089)	(77,923)
Prepaid expenses and other	(3,265)	(187)
Accounts payable and accrued liabilities	76,602	23,702
Other, net	(2,171)	(772)
Net cash provided by operating activities	56,684	61,119
Cash flows from investing activities
Capital expenditures	(20,344)	(15,401)
Proceeds from the sale of property, plant, and equipment	17,775	12,608
Acquisition, net of cash acquired	0	(323,487)
Other, net	3,060	6,230
Net cash provided by (used in) investing activities	491	(320,050)
Cash flows from financing activities
Proceeds from exercise of stock options	961	5,781
Borrowings under senior notes	0	325,000
Dividends paid	(13,566)	(11,547)
Borrowings under revolving credit facilities	582	520
Payments under revolving credit facilities	(582)	(520)
Principal payments under capital lease obligations	(216)	(416)
Proceeds from issuance of term loan credit facility	0	189,470
Principal payments under term loan credit facility	(1,410)	(198,058)
Principal payments under industrial revenue bond	(93)	(446)
Debt issuance costs paid	0	(6,472)
Convertible senior notes repurchase	(80,200)	(7,513)
Stock repurchase	(44,433)	(46,633)
Net cash (used in) provided by financing activities	(138,957)	249,166
Net decrease in cash, cash equivalents, and restricted cash	(81,782)	(9,765)
Cash, cash equivalents and restricted cash at beginning of period	191,521	163,467
Cash, cash equivalents, and restricted cash at end of period	109,739	153,702
Cash paid during the period for
Interest	16,263	7,069
Income taxes	$ 23,588	$ 32,976

BASIS OF PRESENTATION

BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	1. BASIS OF PRESENTATION The condensed consolidated financial statements of Wabash National Corporation (the “Company”) have been prepared without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the accompanying condensed consolidated financial statements contain all material adjustments (consisting only of normal recurring adjustments) necessary to present fairly the consolidated financial position of the Company, its results of operations and cash flows. The condensed consolidated financial statements included herein should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.

REVENUE RECOGNITION

REVENUE RECOGNITION	9 Months Ended
	Sep. 30, 2018
Revenue Recognition [Abstract]
REVENUE RECOGNITION	2. REVENUE RECOGNITION The Company adopted Financial Accounting Standards Board Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606) effective January 1, 2018. The adoption of Topic 606 did not have an impact on the consolidated financial statements. The Company recognizes revenue from the sale of its products when obligations under the terms of a contract with our customers are satisfied; this occurs with the transfer of control of our products and replacement parts or throughout the completion of service work. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring promised goods or services to a customer and excludes all taxes collected from the customer. Shipping and handling fees are included in Net Sales Cost of Sales segment that have no alternative use and contain an enforceable right to payment, as well as service work whereby the customer simultaneously receives and consumes the benefits provided, the Company recognizes revenue on the basis of the Company’s efforts or inputs to the satisfaction of these performance obligations, measured by actual total cost incurred to the total estimated costs for each project. Total revenue recognized over time was not material to the consolidated financial statements for all periods presented. The Company has identified three separate and distinct performance obligations: 1) the sale of a trailer or equipment, 2) the sale of replacement parts, and 3) service work. For trailer, truck body, equipment, and replacement part sales, control is transferred and revenue is recognized from the sale upon shipment to or pick up by the customer in accordance with the contract terms. The Company does not have any material extended payment terms as payment is received shortly after the point of sale. Accounts receivables are recorded when the right to consideration becomes unconditional. The Company does have customers who pay for the product prior to the transfer of control which is recorded as customer deposits in Other Accrued Liabilities as shown in Note 12. Customer deposits are recognized as revenue when the Company performs its obligations under the contract and transfers control of the product.

ACQUISITION OF SUPREME INDUSTRI

ACQUISITION OF SUPREME INDUSTRIES, INC.	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
ACQUISITION OF SUPREME INDUSTRIES, INC.	3. ACQUISITION OF SUPREME INDUSTRIES, INC. On September 27, 2017, the Company completed the acquisition of Supreme Industries, Inc. (“Supreme”) following a cash tender offer by the Company for all outstanding shares of Supreme’s Class A and Class B common stock for $21 per share and an aggregate consideration paid of $360.4 financed the Supreme acquisition and related fees and expenses using the proceeds of the Company’s $325 million offering in aggregate principal amount of 5.50% senior unsecured notes due 2025 (as described in further detail in Note 6) and available cash and cash equivalents. Supreme is one of the nation’s leading manufacturers of specialized commercial vehicles, including cutaway and dry-freight van bodies, refrigerated units, and stake bodies. Supreme has manufacturing facilities in Goshen and Ligonier, Indiana; Jonestown, Pennsylvania; Cleburne, Texas; Griffin, Georgia; and Moreno Valley, California. Supreme is part of our new Final Mile Products reportable segment created by the Company in the fourth quarter of 2017. This acquisition allows the Company to accelerate our growth and expand our presence in the final mile space, with increased distribution paths and greater customer reach, and supports the Company’s objective to transform it into a more diversified industrial manufacturer. The Company incurred various costs related to the Supreme acquisition including fees paid to an investment banker for acquisition services and the related bridge financing commitment as well as professional fees for diligence, legal and accounting totaling $0.1 million and $8.7 million for the nine-month periods ending September 30, 2018 and 2017, respectively. These costs have been recorded as Acquisition Expenses The aggregate purchase price of $360.4 million was allocated to the opening balance sheet of Supreme at September 27, 2017, the date of acquisition, as follows (in thousands): Cash $ 36,878 Accounts receivable 25,196 Inventories 33,471 Prepaid expense and other 23,916 Property, plant, and equipment 59,891 Intangibles 161,200 Goodwill 167,714 Other assets 127 Total assets acquired $ 508,393 Current portion of long term debt $ 7,167 Accounts payable 10,546 Other accrued liabilites 55,518 Deferred income taxes 71,880 Long term liabilities 2,918 Total liabilities assumed $ 148,029 Net assets acquired $ 360,364 Acquisition, net of cash acquired $ 323,486 Intangible assets totaling $161.2 million were recorded as a result of the acquisition and consist of the following (in thousands): Amount Useful Life Tradename $ 20,000 20 years Customer relationships 139,000 15 years Backlog 2,200 Less than 1 year $ 161,200 The Company plans to amortize the tradename intangible asset utilizing a straight-line approach and the customer relationship intangible asset using an accelerated method that follows the pattern in which the economic benefits of the asset is expected to be consumed. Amortization expense, including the intangible assets recorded from the Supreme acquisition, is estimated to be $20.1 million, $20.5 million, $22.1 million, $23.4 million and $18.9 million for the years 2018 through 2022, respectively. Goodwill of $167.7 million was recorded as a result of the acquisition. The amount recorded as goodwill for the Supreme acquisition is not deductible for tax purposes. Goodwill, calculated as the excess of the consideration transferred over the net assets recognized and represents future economic benefits arising from other assets acquired that could not be individually identified and separately recognized, is comprised of operational synergies that are expected to be realized in both the short and long-term and the opportunity to enter new market sectors with higher margin potential which will enable us to deliver greater value to our customers and shareholders. During the first nine months of 2018, the Company made certain adjustments to its purchase price allocation to adjust tax obligations, inventory, accrued liabilities, and accounts receivable, which resulted in a $1.5 million decrease in goodwill. Unaudited Pro forma Results The results of Supreme are included in the Condensed Consolidated Statements of Operations, including $85.1 million and $0.2 million of net sales and net loss, respectively, for the three months ended September 30, 2018 and $276.8 million and $14.2 million of net sales and net income, respectively, for the nine months ended September 30, 2018. The following unaudited pro forma information is shown below as if the acquisition of Supreme had been completed as of the beginning of the earliest period presented (in thousands): Three Months Ended Nine Months Ended 2017 2017 Net sales $ 496,761 $ 1,454,599 Net income $ 14,688 $ 58,341 The information presented above is for informational purposes only and is not necessarily indicative of the actual results that would have occurred had the acquisition been consummated at the beginning of the respective periods, nor is it necessarily indicative of future operating results of the combined companies under the ownership and management of the Company.

INVENTORIES

INVENTORIES	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
INVENTORIES	4. INVENTORIES Inventories are stated at the lower of cost, determined either on the first-in, first-out or average cost method, or net realizable value. The cost of manufactured inventory includes raw material, labor and overhead. Inventories, net of reserves, consist of the following (in thousands): September 30, December 31, 2018 2017 Raw materials and components $ 104,797 $ 83,834 Finished goods 101,490 54,000 Work in progress 18,281 29,123 Aftermarket parts 6,468 6,448 Used trailers 1,414 7,330 $ 232,450 $ 180,735

PREPAID EXPENSES

PREPAID EXPENSES	9 Months Ended
	Sep. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAID EXPENSES	5. PREPAID EXPENSES Prepaid expenses and other current assets as of September 30, 2018 and December 31, 2017 consists of the following (in thousands): September 30, December 31, 2018 2017 Chassis converter pool agreements $ 16,653 $ 18,326 Assets held for sale 16,631 10,777 Income tax receivables 15,086 10,821 Restricted cash 5,618 - Insurance premiums & maintenance agreements 3,937 6,860 All other 14,633 10,515 $ 72,558 $ 57,299 Chassis converter pool agreements represent chassis transferred to the Company on a restricted basis by the manufacturer, who retains the sole authority to authorize commencement of work on the chassis and to make certain other decisions with respect to the chassis including the terms and pricing of sales to the manufacturer’s dealers. Assets held for sale are related to the Company’s former branch locations and businesses the Company has sold or intends to sell within one year. Insurance premiums and maintenance agreements are charged to expenses over the contractual life, which is generally one year or less. Additionally, prepaid expenses include costs in excess of billings on contracts for which the Company recognizes revenue over time as services are completed. Restricted cash includes balances that resulted from the sale of certain branch assets that served as collateral to secure the Company’s long-term debt. The restriction will lapse when collateral assets are purchased. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows. September 30, September 30, 2018 2017 Cash and cash equivalents $ 104,121 $ 153,702 Restricted cash included in prepaid expenses and other 5,618 - Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 109,739 $ 153,702

DEBT

DEBT	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
DEBT	6. DEBT Long-term debt consists of the following (in thousands): September 30, December 31, 2018 2017 Senior notes due 2025 $ 325,000 $ 325,000 Term loan credit agreement 186,169 187,579 Convertible senior notes due 2018 - 44,561 Other debt - 93 511,169 557,233 Less: unamortized discount and fees (5,980 ) (7,122 ) Less: current portion (1,880 ) (46,020 ) $ 503,309 $ 504,091 Convertible Senior Notes In April 2012, the Company issued Convertible Senior Notes due 2018 (the “Convertible Notes”) with an aggregate principal amount of $150 million in a public offering. The Convertible Notes bore interest at a rate of 3.375% per annum from the date of issuance, payable semi-annually on May 1 and November 1, and matured on May 1, 2018. The Convertible Notes were senior unsecured obligations of the Company ranking equally with its existing and future senior unsecured debt. The Company used the net proceeds of $145.1 million from the sale of the Convertible Notes to fund a portion of the purchase price of the acquisition of Walker Group Holdings (“Walker”) in May 2012. The Company accounted separately for the liability and equity components of the Convertible Notes in accordance with authoritative guidance for convertible debt instruments that may be settled in cash upon conversion. During 2018, the Company used $80.2 million in cash, excluding interest, to settle $44.6 million in principal of the Convertible Notes of which none were converted to common shares. The excess of the cash settlement amount over the principal value of the Convertible Notes was accounted for as a reacquisition of equity, resulting in a $35.5 million reduction to additional paid-in capital during the nine months ended September 30, 2018. For the nine months ended September 30, 2018, the Company recognized a loss on debt extinguishment of $0.2 million related to settlements and the retirement of the Convertible Notes, which is included in Other, net Contractual coupon interest expense and accretion of discount and fees on the liability component for the Convertible Notes for the three and nine-month periods ended September 30, 2018, and 2017 included in Interest Expense Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Contractual coupon interest expense $ - $ 379 $ 470 $ 1,194 Accretion of discount and fees on the liability component $ - $ 374 $ 461 $ 1,159 Senior Notes On September 26, 2017, the Company issued Senior Notes due 2025 (the “Senior Notes”) in an offering pursuant to Rule 144A or Regulation S under the Securities Act of 1933, as amended, with an aggregate principal amount of $325 million. The Senior Notes bear interest at the rate of 5.50% per annum from the date of issuance, and will pay interest semi-annually in cash on April 1 and October 1 of each year, beginning on April 1, 2018. The Company used the net proceeds of $318.9 million from the sale of the Senior Notes to finance a portion of the acquisition of Supreme and to pay related fees and expenses. The Senior Notes will mature on October 1, 2025. At any time prior to October 1, 2020, the Company may redeem some or all of the Senior Notes for cash at a redemption price equal to 100% of the aggregate principal amount of the Senior Notes being redeemed plus an applicable make-whole premium set forth in the indenture for the Senior Notes and accrued and unpaid interest to, but not including, the redemption date. Prior to October 1, 2020, the Company may redeem up to 40% of the Senior Notes at a redemption price of 105.50% of the principal amount, plus accrued and unpaid interest to, but not including, the redemption date, with the proceeds of certain equity offerings so long as if, after any such redemption occurs, at least 60% of the aggregate principal amount of the Senior Notes remains outstanding. On and after October 1, 2020, the Company may redeem some or all of the Senior Notes at redemption prices (expressed as percentages of principal amount) equal to 102.750% for the twelve-month period beginning on October 1, 2020, 101.375% for the twelve-month period beginning October 1, 2021 and 100% beginning on October 1, 2022, plus accrued and unpaid interest to, but not including, the redemption date. Upon the occurrence of a Change of Control (as defined in the indenture for the Senior Notes), unless the Company has exercised its optional redemption right in respect of the Senior Notes, the holders of the Senior Notes have the right to require the Company to repurchase all or a portion of the Senior Notes at a price equal to 101% of the aggregate principal amount of the Senior Notes, plus any accrued and unpaid interest to, but not including, the date of repurchase. The Senior Notes are guaranteed on a senior unsecured basis by all direct and indirect existing and future domestic restricted subsidiaries, subject to certain restrictions. The Senior Notes and related guarantees are the Company’s and the guarantors’ general unsecured senior obligations and are subordinate to all of the Company’s and the guarantors’ existing and future secured debt to the extent of the assets securing that secured obligation. In addition, the Senior Notes are structurally subordinate to any existing and future debt of any of the Company’s subsidiaries that are not guarantors, to the extent of the assets of those subsidiaries. The indenture for the Senior Notes restricts the Company’s ability and the ability of certain of its subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions in respect of, or repurchase or redeem, its capital stock or with respect to any other interest or participation in, or measured by, its profits; (iii) make loans and certain investments; (iv) sell assets; (v) create or incur liens; (vi) enter into transactions with affiliates; and (vii) consolidate, merge or sell all or substantially all of its assets. These covenants are subject to a number of important exceptions and qualifications. During any time when the Senior Notes are rated investment grade by Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services and no event of default has occurred or is continuing, many of these covenants will be suspended and the Company and its subsidiaries will not be subject to such covenants during such period. The indenture for the Senior Notes contains customary events of default, including payment defaults, breaches of covenants, failure to pay certain judgments and certain events of bankruptcy, insolvency and reorganization. If an event of default occurs and is continuing, the principal amount of the Senior Notes, plus accrued and unpaid interest, if any, may be declared immediately due and payable. These amounts automatically become due and payable if an event of default relating to certain events of bankruptcy, insolvency or reorganization occurs. Contractual coupon interest expense and accretion of discount and fees for the Senior Notes for the three-month and nine-month periods ended September 30, 2018 was $4.6 million and $13.8 million, respectively and is included in Interest Expense Revolving Credit Agreement In May 2012, the Company entered into the Amended and Restated Credit Agreement (as subsequently amended, the “Credit Agreement”), dated as of May 8, 2012, among the Company, certain subsidiaries of the Company from time to time party thereto (together with the Company, the “Borrowers”), the several lenders from time to time party thereto, and Wells Fargo Capital Finance, LLC, as arranger and administrative agent (the “Agent”). The Credit Agreement provides for, among other things, (x) a $175 million senior secured revolving credit facility that matures on June 4, 2020, subject to certain springing maturity events and (y) an uncommitted accordion feature allowing for an increase to the availability under the revolving credit facility of up to $50 million, subject to certain conditions (the “Revolving Credit Facility”). The Revolving Credit Facility (i) bears interest, at the Borrowers’ election, at (x) the London Interbank Offer Rate (LIBOR) (subject to a floor of 0%) plus a margin ranging from 150 basis points to 200 basis points, or (y) a base rate plus a margin ranging from 50 basis points to 100 basis points, in each case, based upon the monthly average excess availability under the Revolving Credit Facility, (ii) requires the Company to pay a monthly unused line fee equal to 25 basis points times the average unused availability under the Revolving Credit Facility, (iii) provides that if availability under the Revolving Credit Facility is less than 12.5% of the total commitment under the Revolving Credit Facility or if there exists an event of default, amounts in any of the Borrowers’ and the subsidiary guarantors’ deposit accounts (other than certain excluded accounts) will be transferred daily into a blocked account held by the Agent and applied to reduce the outstanding amounts under the Revolving Credit Facility, and (iv) requires the Company to maintain a minimum fixed charge coverage ratio of not less than 1.1 to 1.0 as of the end of any period of 12 fiscal months when excess availability under the Revolving Credit Facility is less than 10% of the total commitment under the Revolving Credit Facility. In connection with, and in order to permit under the Credit Agreement, the Senior Notes offering and the acquisition of Supreme, on August 16, 2017, the Company entered into the Third Amendment to the Credit Agreement (the “Third Amendment”). The Third Amendment also permitted the Company to incur certain other indebtedness in connection with the acquisition of Supreme and to acquire certain liens and obligations of Supreme upon the consummation of the acquisition. The Credit Agreement is guaranteed by certain of the Company’s subsidiaries (the “Revolver Guarantors”) and is secured by (i) first priority security interests (subject only to customary permitted liens and certain other permitted liens) in substantially all personal property of the Borrowers and the Revolver Guarantors, consisting of accounts receivable, inventory, cash, deposit and securities accounts and any cash or other assets in such accounts and, to the extent evidencing or otherwise related to such property, all general intangibles, licenses, intercompany debt, letter of credit rights, commercial tort claims, chattel paper, instruments, supporting obligations, documents and payment intangibles (collectively, the “Revolver Priority Collateral”), and (ii) second-priority liens on and security interests in (subject only to the liens securing the Term Loan Credit Agreement (as defined below), customary permitted liens and certain other permitted liens) (A) equity interests of each direct subsidiary held by the Borrower and each Revolver Guarantor (subject to customary limitations in the case of the equity of foreign subsidiaries), and (B) substantially all other tangible and intangible assets of the Borrowers and the Revolver Guarantors including equipment, general intangibles, intercompany notes, insurance policies, investment property, intellectual property and material owned real property (in each case, except to the extent constituting Revolver Priority Collateral) (collectively, the “Term Priority Collateral”). The respective priorities of the security interests securing the Credit Agreement and the Term Loan Credit Agreement are governed by an Intercreditor Agreement between the Agent and the Term Agent (as defined below) (the “Intercreditor Agreement”). The Credit Agreement contains customary covenants limiting the Company’s ability to, among other things, pay cash dividends, incur debt or liens, redeem or repurchase stock, enter into transactions with affiliates, merge, dissolve, pay off subordinated indebtedness, make investments and dispose of assets. Subject to the terms of the Intercreditor Agreement, if the covenants under the Credit Agreement are breached, the lenders may, subject to various customary cure rights, require the immediate payment of all amounts outstanding and foreclose on collateral. Other customary events of default in the Credit Agreement include, without limitation, failure to pay obligations when due, initiation of insolvency proceedings, defaults on certain other indebtedness, and the incurrence of certain judgments that are not stayed, satisfied, bonded or discharged within 30 days. As of September 30, 2018, the Company had no outstanding borrowings under the Credit Agreement and was in compliance with all covenants. The Company’s liquidity position, defined as cash on hand and available borrowing capacity on the Revolving Credit Facility, amounted to $271.4 million as of September 30, 2018. Term Loan Credit Agreement In May 2012, the Company entered into the Term Loan Credit Agreement (as amended, the “Term Loan Credit Agreement”), dated as of May 8, 2012, among the Company, the several lenders from time to time party thereto, Morgan Stanley Senior Funding, Inc., as administrative agent (the “Term Agent”), joint lead arranger and joint bookrunner, and Wells Fargo Securities, LLC, as joint lead arranger and joint bookrunner, which provides for, among other things, (x) a senior secured term loan of $188.0 million that matures on March 19, 2022, subject to certain springing maturity events (the “Term Loans”), and (y) an uncommitted accordion feature to provide for additional senior secured term loans of up to $75 million plus an unlimited amount provided that the senior secured leverage ratio would not exceed 3.00 to 1.00, subject to certain conditions (the “Term Loan Facility”). In connection with, and in order to permit under the Term Loan Credit Agreement, the Senior Notes offering and the acquisition of Supreme, on August 18, 2017, the Company entered into Amendment No. 4 to the Term Loan Credit Agreement (“Amendment No. 4”). Amendment No. 4 also permitted the Company to incur certain other indebtedness in connection with the Supreme acquisition and to acquire certain liens and obligations of Supreme upon the consummation of the Supreme acquisition. Furthermore, on November 17, 2017, the Company entered into Amendment No. 5 to the Term Loan Credit Agreement (“Amendment No. 5”). As of the Amendment No. 5 date, $188.0 million of the Term Loans were outstanding. Under Amendment No. 5, the lenders agreed to provide to the Company term loans in the same aggregate principal amount of the outstanding Term Loans, which were used to refinance the outstanding Term Loans. The Term Loans amortize in equal quarterly installments in aggregate amounts equal to 0.25% of the initial principal amount of the Term Loans, with the balance payable at maturity, and bear interest at a rate, at the Company’s election, equal to (i) LIBOR (subject to a floor of 0%) plus a margin of 225 basis points or (ii) a base rate (subject to a floor of 0%) plus a margin of 125 basis points. The Company is not subject to any financial covenants under the Term Loan Facility. The Term Loan Credit Agreement is guaranteed by certain of the Company’s subsidiaries, and is secured by (i) first-priority liens on and security interests in the Term Priority Collateral, and (ii) second-priority security interests in the Revolver Priority Collateral. The Term Loan Credit Agreement contains customary covenants limiting the Company’s ability to, among other things, pay cash dividends, incur debt or liens, redeem or repurchase stock, enter into transactions with affiliates, merge, dissolve, pay off subordinated indebtedness, make investments and dispose of assets. Subject to the terms of the Intercreditor Agreement, if the covenants under the Term Loan Credit Agreement are breached, the lenders may, subject to various customary cure rights, require the immediate payment of all amounts outstanding and foreclose on collateral. Other customary events of default in the Term Loan Credit Agreement include, without limitation, failure to pay obligations when due, initiation of insolvency proceedings, defaults on certain other indebtedness, and the incurrence of certain judgments that are not stayed, satisfied, bonded or discharged within 60 days. For the three month period ended September 30, 2018 and 2017, under the Term Loan Credit Agreement the Company paid interest of $2.0 million and $1.9 million, respectively, and principal of $0.5 million during each period. In the first nine months of 2018 and 2017, the Company paid interest of $5.9 million and $5.7 million, respectively, and principal of $1.4 million during each period. In connection with Amendment No. 3 the Company recognized a loss on debt extinguishment of $0.6 million during the first quarter of 2017 which was included in Other, net For each three-month period ended September 30, 2018 and 2017, the Company incurred charges of less than $0.1 million for amortization of fees and original issuance discount, and for each nine-month period ended September 30, 2018 and 2017, the Company incurred charges of $0.2 million and $0.1 million, respectively, which is included in Interest Expense

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	7. FAIR VALUE MEASUREMENTS The Company’s fair value measurements are based upon a three-level valuation hierarchy. These valuation techniques are based upon the transparency of inputs (observable and unobservable) to the valuation of an asset or liability as of the measurement date. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs create the following fair value hierarchy: · Level 1 — Valuation is based on quoted prices for identical assets or liabilities in active markets; · Level 2 — Valuation is based on quoted prices for similar assets or liabilities in active markets, or other inputs that are observable for the asset or liability, either directly or indirectly, for the full term of the financial instrument; and · Level 3 — Valuation is based upon other unobservable inputs that are significant to the fair value measurement. Recurring Fair Value Measurements The Company maintains a non-qualified deferred compensation plan which is offered to senior management and other key employees. The amount owed to participants is an unfunded and unsecured general obligation of the Company. Participants are offered various investment options with which to invest the amount owed to them, and the plan administrator maintains a record of the liability owed to participants by investment. To minimize the impact of the change in market value of this liability, the Company has elected to purchase a separate portfolio of investments through the plan administrator similar to those chosen by the participant. The investments purchased by the Company include mutual funds, $0.9 million of which are classified as Level 1, and life-insurance contracts valued based on the performance of underlying mutual funds, $16.3 million of which are classified as Level 2. Additionally, upon the Company’s acquisition of Supreme, the Company acquired a pool of investments made by a wholly owned captive insurance subsidiary. These investments are comprised of mutual funds, $4.9 million of which are classified as Level 1. Estimated Fair Value of Debt The estimated fair value of debt at September 30, 2018 consists primarily of the Senior Notes due 2025 and borrowings under the Term Loan Credit Agreement (see Note 6 Debt). The fair value of the Senior Notes due 2025, Term Loan Credit Agreement and the Revolving Credit Facility are based upon third party pricing sources, which generally do not represent daily market activity or represent data obtained from an exchange, and are classified as Level 2. The interest rates on the Company’s borrowings under the Revolving Credit Facility are adjusted regularly to reflect current market rates and thus carrying value approximates fair value for these borrowings. All other debt and capital lease obligations approximate their fair value as determined by discounted cash flows and are classified as Level 3. The Company’s carrying and estimated fair value of debt at September 30, 2018 and December 31, 2017 were as follows (in thousands): September 30, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Value Level 1 Level 2 Level 3 Value Level 1 Level 2 Level 3 Instrument Convertible senior notes due 2018 $ - $ - $ - $ - $ 44,046 $ - $ 83,605 $ - Senior notes due 2025 319,818 - 310,375 - 319,377 - 328,250 - Term loan credit agreement 185,371 - 186,169 - 186,620 - 188,048 - Other debt - - - - 67 - - 67 Capital lease obligations 1,086 - - 1,086 1,302 - - 1,302 $ 506,275 $ - $ 496,544 $ 1,086 $ 551,412 $ - $ 599,903 $ 1,369 The fair value of debt is based on current public market prices for disclosure purposes only. Unrealized gains or losses are not recognized in the financial statements as long-term debt is presented at the carrying value, net of unamortized premium or discount and unamortized deferred financing costs in the financial statements. Impairment of Goodwill and Long-lived Assets The company recorded an impairment of goodwill for a reporting unit within the Diversified Products reportable segment in the third quarter of 2018 for $4.9 million, based on indicative market value of the reporting unit. Changes in the goodwill balance for the nine months ended September 30, 2018 and 2017 are as follows (in thousands): 2018 2017 Balance as of January 1 $ 317,464 $ 148,367 Acquisition of Supreme (1,520 ) 165,400 Effects of foreign currency 44 (141 ) Impairment of goodwill (4,944 ) - Balance as of September 30 $ 311,044 $ 313,626 The Company also recorded an impairment of all long-lived assets for the same reporting unit within the Diversified Products reportable segment in the third quarter of 2018 of $7.0 million. The aggregate goodwill and long-lived asset impairment charges, which are based on Level 3 fair value measurements, are included in Impairment Financial Derivatives As of September 30, 2018, the Company was party to forward contracts to hedge changes with specific commodities for a notional amounts of approximately $25.1 million. The Company uses financial derivatives to mitigate the risks associated with fluctuations in commodity prices impacting its cash flows related to inventory purchases from suppliers. We currently do not hedge all commodity price risk. At inception, the Company designated the forward contracts as cash flow hedges. The forward contracts mature at specified monthly settlement dates through October, 2019. The effective portion of the hedging transaction is recognized in Accumulated Other Comprehensive Income and transferred to earnings using specific identification when the forecasted hedged transaction takes place or when the forecasted hedged transaction is probable of not occurring. As of September 30, 2018 the fair value of the forward contracts, which are based on current market prices and are classified as Level 2 on the fair value hierarchy, approximate their notional amount.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	9 Months Ended
	Sep. 30, 2018
Share-based Compensation [Abstract]
STOCK-BASED COMPENSATION	8. STOCK-BASED COMPENSATION The Company recognizes all share-based payments based upon their fair value. The Company grants restricted stock units subject to service, performance and/or market conditions. The Company’s policy is to recognize expense for awards that have service conditions only subject to graded vesting using the straight-line attribution method. The fair value of service and performance based units is based on the market price of a share of underlying common stock at the date of grant. The fair value of the market based units is based on a lattice valuation model. The amount of compensation costs related to restricted stock units and performance units not yet recognized was $17.2 million at September 30, 2018 for which the expense will be recognized through 2021.

CONTINGENCIES

CONTINGENCIES	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	9. CONTINGENCIES The Company is involved in a number of legal proceedings concerning matters arising in connection with the conduct of its business activities, and is periodically subject to governmental examinations (including by regulatory and tax authorities), and information gathering requests (collectively, "governmental examinations"). As of September 30, 2018, the Company was named as a defendant or was otherwise involved in numerous legal proceedings and governmental examinations in various jurisdictions, both in the United States and internationally. The Company has recorded liabilities for certain of its outstanding legal proceedings and governmental examinations. A liability is accrued when it is both (a) probable that a loss with respect to the legal proceeding has occurred and (b) the amount of loss can be reasonably estimated. The Company evaluates, on a quarterly basis, developments in legal proceedings and governmental examinations that could cause an increase or decrease in the amount of the liability that has been previously accrued. These legal proceedings, as well as governmental examinations, involve various lines of business of the Company and a variety of claims (including, but not limited to, common law tort, contract, antitrust and consumer protection claims), some of which present novel factual allegations and/or unique legal theories. While some matters pending against the Company specify the damages claimed by the plaintiff, many seek a not-yet-quantified amount of damages or are at very early stages of the legal process. Even when the amount of damages claimed against the Company are stated, the claimed amount may be exaggerated and/or unsupported. As a result, it is not currently possible to estimate a range of possible loss beyond previously accrued liabilities relating to some matters including those described below. Such previously accrued liabilities may not represent the Company's maximum loss exposure. The legal proceedings and governmental examinations underlying the estimated range will change from time to time and actual results may vary significantly from the currently accrued liabilities. Based on its current knowledge, and taking into consideration its litigation-related liabilities, the Company believes it is not a party to, nor are any of its properties the subject of, any pending legal proceeding or governmental examination other than the matters below, which are addressed individually, that would have a material adverse effect on the Company's consolidated financial condition or liquidity if determined in a manner adverse to the Company. However, in light of the uncertainties involved in such matters, the ultimate outcome of a particular matter could be material to the Company's operating results for a particular period depending on, among other factors, the size of the loss or liability imposed and the level of the Company’s income for that period. Costs associated with the litigation and settlements of legal matters are reported within General and Administrative Expenses in the Condensed Consolidated Statements of Operations. Brazil Joint Venture In March 2001, Bernard Krone Indústria e Comércio de Máquinas Agrícolas Ltda. (“BK”) filed suit against the Company in the Fourth Civil Court of Curitiba in the State of Paraná, Brazil. Because of the bankruptcy of BK, this proceeding is now pending before the Second Civil Court of Bankruptcies and Creditors Reorganization of Curitiba, State of Paraná (No. 232/99). The case grows out of a joint venture agreement between BK and the Company related to marketing of RoadRailer trailers in Brazil and other areas of South America. When BK was placed into the Brazilian equivalent of bankruptcy late in 2000, the joint venture was dissolved. BK subsequently filed its lawsuit against the Company alleging that it was forced to terminate business with other companies because of the exclusivity and non-compete clauses purportedly found in the joint venture agreement. BK asserted damages, exclusive of any potentially court-imposed interest or inflation adjustments, of approximately R$20.8 million (Brazilian Reais). BK did not change the amount of damages asserted following its filing of the case in 2001. A bench (non-jury) trial was held on March 30, 2010 in Curitiba, Paraná, Brazil. On November 22, 2011, the Fourth Civil Court of Curitiba partially granted BK’s claims, and ordered Wabash to pay BK lost profits, compensatory, economic and moral damages in excess of the amount of compensatory damages asserted by BK. The total ordered damages amount was approximately R$26.7 million (Brazilian Reais), which was approximately $6.6 million U.S. dollars using the exchange rate as of September 30, 2018, and exclusive of any potentially court-imposed interest, fees or inflation adjustments. On October 5, 2016, the Court of Appeals re-heard all facts and legal questions presented in the case, and ruled in favor of the Company on all claims at issue. In doing so, the Court of Appeals dismissed all claims against the Company and vacated the judgment and damages previously ordered by the Fourth Civil Court of Curitiba. On September 30, 2017, BK filed its notice for a special appeal of the Court of Appeals ruling to the Superior Court of Justice and the Supreme Federal Court. However, unless these higher courts find in favor of BK on any of its claims, the judgment of the Court of Appeals in favor of the Company will be final. As a result of the Court of Appeals ruling, the Company does not expect that this proceeding will have a material adverse effect on its financial condition or results of operations; however, it will continue to monitor the appeal and await the Court of Appeals’ ruling. Intellectual Property In October 2006, the Company filed a patent infringement suit against Vanguard National Corporation (“Vanguard”) regarding the Company’s U.S. Patent Nos. 6,986,546 and 6,220,651 in the U.S. District Court for the Northern District of Indiana (Civil Action No. 4:06-cv-135). The Company amended the Complaint in April 2007. In May 2007, Vanguard filed its Answer to the Amended Complaint, along with Counterclaims seeking findings of noninfringement, invalidity, and unenforceability of the subject patents. The Company filed a reply to Vanguard’s counterclaims in May 2007, denying any wrongdoing or merit to the allegations as set forth in the counterclaims. The case was stayed by agreement of the parties while the U.S. Patent and Trademark Office (“Patent Office”) undertook a reexamination of U.S. Patent No. 6,986,546. In June 2010, the Patent Office notified the Company that the reexamination was completed and the Patent Office reissued U.S. Patent No. 6,986,546 without cancelling any claims of the patent. The parties have not yet petitioned the Court to lift the stay, and it is its claims against Vanguard have merit and that the claims asserted by Vanguard are without merit. The Company intends to vigorously defend its position and intellectual property. The Company believes that the resolution of this lawsuit will not have a material adverse effect on its financial position, liquidity or future results of operations. However, at this stage of the proceeding, no assurance can be given as to the ultimate outcome of the case Walker Acquisition In connection with the Company’s acquisition of Walker in May 2012, there was an outstanding, disputed claim of approximately $2.9 million for unpaid benefits. In June 2018, this dispute was resolved as part of a confidential settlement agreement. The resolution of the dispute did not have a material adverse effect on the Company’s financial condition or results of operations. Environmental Disputes In August 2014, the Company received notice as a potentially responsible party (“PRP”) by the South Carolina Department of Health and Environmental Control (“DHEC”) pertaining to the Philip Services Site located in Rock Hill, South Carolina pursuant to the Comprehensive Environmental Response, Compensation and Liability Act and corresponding South Carolina statutes. PRPs include parties identified through manifest records as having contributed to deliveries of hazardous substances to the Philip Services Site between 1979 and 1999. The DHEC’s allegation that the Company was a PRP arises out of four manifest entries in 1989 under the name of a company unaffiliated with Wabash National (or any of its former or current subsidiaries) that purport to be delivering a de minimis amount of hazardous waste to the Philip Services Site “c/o Wabash National Corporation.” As such, the Philip Services Site PRP Group (“PRP Group”) notified Wabash in August 2014 that it was offering the Company the opportunity to resolve any liabilities associated with the Philip Services Site by entering into a Cash Out and Reopener Settlement Agreement (the “Settlement Agreement”) with the PRP Group, as well as a Consent Decree with the DHEC. The Company has accepted the offer from the PRP Group to enter into the Settlement Agreement and Consent Decree, while reserving its rights to contest its liability for any deliveries of hazardous materials to the Philips Services Site. The requested settlement payment is immaterial to the Company’s financial conditions or operations, and as a result, if the Settlement Agreement and Consent Decree are finalized, the payment to be made by the Company thereunder is not expected to have a material adverse effect on the Company’s financial condition or results of operations. Supreme Litigation Prior to the Company’s acquisition of Supreme, a complaint was filed against Supreme Corporation (“SC”), a subsidiary of Supreme, in a suit (SVI, Inc. v. Supreme Corporation, Hometown Trolley (a/k/a Double K, Inc.) and Dustin Pence) in the United States District Court, District of Nevada on May 16, 2016. The plaintiff is SC’s former trolley distributor. The plaintiff filed an amended complaint on January 3, 2017, which alleges that SC’s sale of its trolley assets to another trolley manufacturer was improper. SC filed a motion to dismiss, which was granted in part on May 30, 2017. The remaining claims alleged against SC include: (i) misappropriation of trade secrets; (ii) civil conspiracy/collusion; (iii) tortious interference with contractual relationships; (iv) breach of contract; and (v) breach of the covenant of good faith and fair dealing. The plaintiff alleges damages amounting to approximately $40 million. Management believes that the allegations are without merit. However, due to the inherent risk of litigation and to avoid additional fees and costs, the Company reached a settlement with SVI, Inc., subject to mutual releases of all claims. On May 14, 2018, the Court approved the settlement. On May 30, 2018, the Court dismissed with prejudice all claims against SC. The settlement of this matter did not have a material adverse effect on the Company’s financial condition or results of operations Prior to the Company’s acquisition of Supreme, on November 4, 2016, a putative class action lawsuit was filed against Supreme, Mark D. Weber (Supreme’s former Chief Executive Officer) and Matthew W. Long (Supreme’s former Chief Financial Officer) in the United States District Court for the Central District of California alleging the defendants violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 by making material, misleading statements in July 2016 regarding projected backlog. The plaintiff seeks to recover unspecified damages. On February 14, 2017, the court transferred the venue of the case to the Northern District of Indiana upon the joint stipulation of the plaintiff and the defendants. An amended complaint was filed on April 24, 2017 challenging statements made during a putative class period of October 22, 2015 through October 21, 2016. On May 24, 2018, the Court granted Supreme’s motion to dismiss all claims for failure to state a claim. On July 13, 2018, the plaintiffs filed a second amended complaint. On August 24, 2018, the Company filed a second motion to dismiss for failure to state a claim, and requested dismissal with prejudice. The case is stayed as to discovery. Due to the inherent risk of litigation, the outcome of this case is uncertain and unpredictable; however, at this time, management believes that the allegations are without merit and is vigorously defending the matter. As a result, management does not believe this matter will have a material adverse effect on the Company’s financial condition or results of operations. Chassis Converter Pool Agreements The Company, through Supreme, obtains most vehicle chassis for its specialized vehicle products directly from the chassis manufacturers under converter pool agreements. Chassis are obtained from the manufacturers based on orders from customers, and in some cases, for unallocated orders. The agreements generally state that the manufacturer will provide a supply of chassis to be maintained at the Company’s facilities with the condition that we will store such chassis and will not move, sell, or otherwise dispose of such chassis except under the terms of the agreement. In addition, the manufacturer typically retains the sole authority to authorize commencement of work on the chassis and to make certain other decisions with respect to the chassis including the terms and pricing of sales of the chassis to the manufacturer’s dealers. The manufacturer also does not transfer the certificate of origin to the Company nor permit the Company to sell or transfer the chassis to anyone other than the manufacturer (for ultimate resale to a dealer). Although the Company is party to related finance agreements with manufacturers, the Company has not historically settled, nor expects to in the future settle, any related obligations in cash. Instead, the obligation is settled by the manufacturer upon reassignment of the chassis to an accepted dealer, and the dealer is invoiced for the chassis by the manufacturer. Accordingly, as of September 30, 2018, the Company’s outstanding chassis converter pool with the manufacturer totaled $16.7 million and has included this financing agreement on the Company’s Consolidated Balance Sheets within Prepaid expenses and other and Other accrued liabilities . All other chassis programs through its Supreme subsidiary are handled as consigned inventory belonging to the manufacturer and totaled approximately $4.5 million. Under these agreements, if the chassis is not delivered to a customer within a specified time frame the Company is required to pay a finance or storage charge on the chassis. Additionally, the Company receives finance support funds from manufacturers when the chassis are assigned into the Company’s chassis pool. Typically, chassis are converted and delivered to customers within 90 days of the receipt of the chassis by the Company.

NET INCOME PER SHARE

NET INCOME PER SHARE	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
NET INCOME PER SHARE	10. NET INCOME PER SHARE Per share results have been calculated based on the average number of common shares outstanding. The calculation of basic and diluted net income per share is determined using net income applicable to common stockholders as the numerator and the number of shares included in the denominator as follows (in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Basic net income per share: Net income applicable to common stockholders $ 4,664 $ 18,947 $ 57,837 $ 62,066 Weighted average common shares outstanding 56,798 58,994 57,486 59,675 Basic net income per share $ 0.08 $ 0.32 $ 1.01 $ 1.04 Diluted net income per share: Net income applicable to common stockholders $ 4,664 $ 18,947 $ 57,837 $ 62,066 Weighted average common shares outstanding 56,798 58,994 57,486 59,675 Dilutive shares from assumed conversion of convertible senior notes - 1,701 676 1,713 Dilutive stock options and restricted stock 944 1,540 1,056 1,527 Diluted weighted average common shares outstanding 57,742 62,235 59,218 62,915 Diluted net income per share $ 0.08 $ 0.30 $ 0.98 $ 0.99 The calculation of diluted net income per share for the nine-month periods ended September 30, 2018 and 2017 and the three-month period ended September 30, 2017 includes the impact of the Company’s Notes as the average stock price of the Company’s common stock during the period was above the initial conversion price of approximately $11.70 per share.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	11. INCOME TAXES For the three months ended September 30, 2018, the Company recognized income tax expense of $5.3 million compared to $10.7 million for the same period in the prior year. The effective tax rate for this period was 53.4% compared to 36.2% for the same period in the prior year. For the nine months ended September 30, 2018, the Company recognized income tax expense of $21.2 million in the first nine months of 2018 compared to $32.3 million for the same period in the prior year. The effective tax rates for the first nine months of 2018 and 2017 were 26.8% and 34.2%, respectively. These effective tax rates differ from the US Federal statutory rate of 21% and 35% for 2018 and 2017, respectively, primarily due to the impact of state and local taxes as well as discrete items incurred related to the deductibility of executive compensation offset by the recognition of excess tax benefits on share-based awards. The Tax Cuts and Jobs Act (the “Act”) was enacted on December 22, 2017. The Act contains numerous new and changed provisions related to the US federal taxation of domestic and foreign corporate operations. As such, for the period ended December 31, 2017, the Company remeasured certain deferred tax assets and liabilities based on the rates that are expected to be in effect at the time the tax deduction or taxable item will be reported in the Company’s tax return (i.e. when they are expected to reverse in the future), which is generally 21%, as well as assessed its ability to realize deferred income tax assets in the future under the new rules. Additionally, the Company assessed the impacts of the new provisions associated with the deductibility of executive compensation under Internal Revenue Code Section 162(m), and the associated “grandfathering” rules within the Act to provide taxpayers transition relief when applying the change in law. As of December 31, 2017, the Company recognized a $3.1 million deferred income tax asset associated with the future tax deductions of equity-based compensation for the executives whose compensation falls under the new limitation rules. During the third quarter of 2018, the Company reversed this deferred tax asset as new guidance was issued by the Department of Treasury in Notice 2018-68 with regards to the treatment of negative discretionary language contained within the Company’s executive compensation plan.

OTHER ACCRUED LIABILITIES

OTHER ACCRUED LIABILITIES	9 Months Ended
	Sep. 30, 2018
Payables and Accruals [Abstract]
OTHER ACCRUED LIABILITIES	12. OTHER ACCRUED LIABILITIES The following table presents the major components of Other Accrued Liabilities September 30, December 31, 2018 2017 Payroll and related taxes $ 26,303 $ 27,840 Customer deposits 23,044 26,059 Warranty 21,465 20,132 Chassis converter pool agreements 16,653 18,326 Self-insurance 10,755 9,996 Accrued taxes 4,731 9,224 All other 17,359 17,333 $ 120,310 $ 128,910 The following table presents the changes in the product warranty accrual included in Other Accrued Liabilities 2018 2017 Balance as of January 1 $ 20,132 $ 20,520 Provision for warranties issued in current year 5,272 4,159 Supreme Acquisition - 1,581 (Recovery of) Provision for pre-existing warranties - (225 ) Payments (3,939 ) (4,928 ) Balance as of September 30 $ 21,465 $ 21,107 The Company offers a limited warranty for its products with a coverage period that ranges between one and five years, except that the coverage period for DuraPlate ®

SEGMENTS

SEGMENTS	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
SEGMENTS	13. SEGMENTS a. Segment Reporting The Company manages its business in three reportable segments: Commercial Trailer Products, Diversified Products, and Final Mile Products. The Commercial Trailer Products segment manufactures standard and customized van and platform trailers and other transportation related equipment for customers who purchase directly from the Company or through independent dealers. The Diversified Products segment, comprised of four strategic business units including, Tank Trailer, Aviation & Truck Equipment, Process Systems and Composites, focuses on the Company’s commitment to expand its customer base, diversify its product offerings and revenues and extend its market leadership by leveraging its proprietary DuraPlate® panel technology, drawing on its core manufacturing expertise and making available products that are complementary to truck and tank trailers and transportation equipment. The Final Mile Products segment includes the operations of Supreme, and other truck body activities previously reported in the Company’s Commercial Trailer Products segment. Previously, we managed our business in two segments: Commercial Trailer Products and Diversified Products. In the third quarter of 2017, we completed the acquisition of Supreme. As a result, we created a new reporting segment in the fourth quarter of 2017 referred to as the Final Mile Products segment, which includes the Supreme operations and certain other truck body operations which were previously included in our Commercial Trailer Products segment. The Company has not restated the historical comparative periods due to the immaterial impact of the existing truck body activities on the presented segments and periods. The accounting policies of the segments are the same as those described in the summary of significant accounting policies except that the Company evaluates segment performance based on income from operations. The Company has not allocated certain corporate related administrative costs, interest and income taxes included in the corporate and eliminations segment to the Company’s other reportable segments. The Company accounts for intersegment sales and transfers at cost plus a specified mark-up. Reportable segment information is as follows (in thousands): Commercial Diversified Final Mile Corporate and Trailer Products Products Products Eliminations Consolidated Three Months Ended September 30, 2018 Net sales External customers $ 368,301 $ 97,723 $ 87,049 $ - $ 553,073 Intersegment sales 41 4,638 - (4,679 ) - Total net sales $ 368,342 $ 102,361 $ 87,049 $ (4,679 ) $ 553,073 Income (Loss) from operations $ 32,453 $ (6,346 ) $ (1,495 ) $ (8,099 ) $ 16,513 Assets $ 358,150 $ 352,494 $ 475,934 $ 163,629 $ 1,350,207 2017 Net sales External customers $ 339,494 $ 85,604 $ - $ - $ 425,098 Intersegment sales (2 ) 3,246 - (3,244 ) - Total net sales $ 339,492 $ 88,850 $ - $ (3,244 ) $ 425,098 Income (Loss) from operations $ 36,319 $ 5,178 $ - $ (14,906 ) $ 26,591 Assets $ 362,209 $ 356,147 $ - $ 660,771 $ 1,379,127 Commercial Diversified Final Mile Corporate and Trailer Products Products Products Eliminations Consolidated Nine Months Ended September 30, 2018 Net sales External customers $ 1,098,182 $ 275,183 $ 283,717 $ - $ 1,657,082 Intersegment sales 89 16,466 - (16,555 ) - Total net sales $ 1,098,271 $ 291,649 $ 283,717 $ (16,555 ) $ 1,657,082 Income (Loss) from operations $ 102,718 $ 3,078 $ 9,372 $ (26,959 ) $ 88,209 Assets $ 358,150 $ 352,494 $ 475,934 $ 163,629 $ 1,350,207 2017 Net sales External customers $ 962,371 $ 261,346 $ - $ - $ 1,223,717 Intersegment sales 50 8,241 - (8,291 ) - Total net sales $ 962,421 $ 269,587 $ - $ (8,291 ) $ 1,223,717 Income (Loss) from operations $ 111,865 $ 14,844 $ - $ (31,186 ) $ 95,523 Assets $ 362,209 $ 356,147 $ - $ 660,771 $ 1,379,127 b. Product Information The Company offers products primarily in four general categories: (1) new trailers, (2) used trailers, (3) components, parts and service and (4) equipment and other. The following table sets forth the major product categories and their percentage of consolidated net sales (dollars in thousands): Commercial Trailer Products Diversified Products Final Mile Products Corporate and Eliminations Consolidated $ $ $ $ $ % Three Months Ended September 30, 2018 New trailers 354,003 44,399 - - 398,402 72.0 Used trailers 1,888 775 - - 2,663 0.5 Components, parts and service 8,090 29,064 2,304 (4,676 ) 34,782 6.3 Equipment and other 4,361 28,123 84,745 (3 ) 117,226 21.2 Total net sales 368,342 102,361 87,049 (4,679 ) 553,073 100.0 2017 New trailers 319,463 35,225 - - 354,688 83.4 Used trailers 3,245 601 - - 3,846 0.9 Components, parts and service 12,255 27,881 - (3,244 ) 36,892 8.7 Equipment and other 4,529 25,143 - - 29,672 7.0 Total net sales 339,492 88,850 - (3,244 ) 425,098 100.0 Commercial Trailer Products Diversified Products Final Mile Products Corporate and Eliminations Consolidated $ $ $ $ $ % Nine Months Ended September 30, 2018 New trailers 1,049,452 115,840 - - 1,165,292 70.3 Used trailers 8,794 2,489 - - 11,283 0.7 Components, parts and service 25,780 94,958 7,340 (16,529 ) 111,549 6.7 Equipment and other 14,245 78,362 276,377 (26 ) 368,958 22.3 Total net sales 1,098,271 291,649 283,717 (16,555 ) 1,657,082 100.0 2017 New trailers 906,058 99,210 - - 1,005,268 82.1 Used trailers 5,368 2,457 - - 7,825 0.6 Components, parts and service 38,100 93,750 - (8,291 ) 123,559 10.1 Equipment and other 12,895 74,170 - - 87,065 7.2 Total net sales 962,421 269,587 - (8,291 ) 1,223,717 100.0

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
NEW ACCOUNTING PRONOUNCEMENTS	14. NEW ACCOUNTING PRONOUNCEMENTS I n February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) of January 1, 2019 . The Company the practical expedients the The Company has approximately $ 5.3 million of noncancelable future rental obligations. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash, which requires entities to show the changes in the total of cash, cash equivalents, restricted cash, and restricted cash equivalents in the statement of cash flows. When cash, cash equivalents, restricted cash and restricted cash equivalents are presented in more than one item on the balance sheet, a reconciliation of the totals in the statement of cash flows to the related captions in the balance sheet is required. This guidance was adopted by the Company on January 1, 2018 and was applied retrospectively. See Note 5 for the reconciliation of the cash, cash equivalents and restricted cash balances reported within the statement of cash flows to the related captions in the balance sheet. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-4”). ASU 2017-4 eliminates Step 2 of the current goodwill impairment test, which requires a hypothetical purchase price allocation to measure goodwill impairment. A goodwill impairment loss will instead be measured at the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the recorded amount of goodwill. The new standard is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. Early adoption is permitted for annual or interim goodwill impairment testing performed after January 1, 2017.

ACQUISITION OF SUPREME INDUST_2

ACQUISITION OF SUPREME INDUSTRIES, INC. (Tables)	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Purchase Price Allocation	The aggregate purchase price of $360.4 million was allocated to the opening balance sheet of Supreme at September 27, 2017, the date of acquisition, as follows (in thousands): Cash $ 36,878 Accounts receivable 25,196 Inventories 33,471 Prepaid expense and other 23,916 Property, plant, and equipment 59,891 Intangibles 161,200 Goodwill 167,714 Other assets 127 Total assets acquired $ 508,393 Current portion of long term debt $ 7,167 Accounts payable 10,546 Other accrued liabilites 55,518 Deferred income taxes 71,880 Long term liabilities 2,918 Total liabilities assumed $ 148,029 Net assets acquired $ 360,364 Acquisition, net of cash acquired $ 323,486
Intangible Assets	Intangible assets totaling $161.2 million were recorded as a result of the acquisition and consist of the following (in thousands): Amount Useful Life Tradename $ 20,000 20 years Customer relationships 139,000 15 years Backlog 2,200 Less than 1 year $ 161,200
Pro Forma Information	The following unaudited pro forma information is shown below as if the acquisition of Supreme had been completed as of the beginning of the earliest period presented (in thousands): Three Months Ended Nine Months Ended 2017 2017 Net sales $ 496,761 $ 1,454,599 Net income $ 14,688 $ 58,341

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories are stated at the lower of cost, determined either on the first-in, first-out or average cost method, or net realizable value. The cost of manufactured inventory includes raw material, labor and overhead. Inventories, net of reserves, consist of the following (in thousands): September 30, December 31, 2018 2017 Raw materials and components $ 104,797 $ 83,834 Finished goods 101,490 54,000 Work in progress 18,281 29,123 Aftermarket parts 6,468 6,448 Used trailers 1,414 7,330 $ 232,450 $ 180,735

PREPAID EXPENSES (Tables)

PREPAID EXPENSES (Tables)	9 Months Ended
	Sep. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure	Prepaid expenses and other current assets as of September 30, 2018 and December 31, 2017 consists of the following (in thousands): September 30, December 31, 2018 2017 Chassis converter pool agreements $ 16,653 $ 18,326 Assets held for sale 16,631 10,777 Income tax receivables 15,086 10,821 Restricted cash 5,618 - Insurance premiums & maintenance agreements 3,937 6,860 All other 14,633 10,515 $ 72,558 $ 57,299
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows. September 30, September 30, 2018 2017 Cash and cash equivalents $ 104,121 $ 153,702 Restricted cash included in prepaid expenses and other 5,618 - Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 109,739 $ 153,702

DEBT (Tables)

DEBT (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt consists of the following (in thousands): September 30, December 31, 2018 2017 Senior notes due 2025 $ 325,000 $ 325,000 Term loan credit agreement 186,169 187,579 Convertible senior notes due 2018 - 44,561 Other debt - 93 511,169 557,233 Less: unamortized discount and fees (5,980 ) (7,122 ) Less: current portion (1,880 ) (46,020 ) $ 503,309 $ 504,091
Contractual Coupon Interest Expense and Accretion Of Discount On Liability	Contractual coupon interest expense and accretion of discount and fees on the liability component for the Convertible Notes for the three and nine month periods ended September 30, 2018, and 2017 included in Interest Expense Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Contractual coupon interest expense $ - $ 379 $ 470 $ 1,194 Accretion of discount and fees on the liability component $ - $ 374 $ 461 $ 1,159

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Accounted For at Fair Value on Recurring Basis	The Company’s carrying and estimated fair value of debt at September 30, 2018 and December 31, 2017 were as follows (in thousands): September 30, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Value Level 1 Level 2 Level 3 Value Level 1 Level 2 Level 3 Instrument Convertible senior notes due 2018 $ - $ - $ - $ - $ 44,046 $ - $ 83,605 $ - Senior notes due 2025 319,818 - 310,375 - 319,377 - 328,250 - Term loan credit agreement 185,371 - 186,169 - 186,620 - 188,048 - Other debt - - - - 67 - - 67 Capital lease obligations 1,086 - - 1,086 1,302 - - 1,302 $ 506,275 $ - $ 496,544 $ 1,086 $ 551,412 $ - $ 599,903 $ 1,369
Schedule of Goodwill	Changes in the goodwill balance for the nine months ended September 30, 2018 and 2017 are as follows (in thousands): 2018 2017 Balance as of January 1 $ 317,464 $ 148,367 Acquisition of Supreme (1,520 ) 165,400 Effects of foreign currency 44 (141 ) Impairment of goodwill (4,944 ) - Balance as of September 30 $ 311,044 $ 313,626

NET INCOME PER SHARE (Tables)

NET INCOME PER SHARE (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of basic and diluted net income per share	The calculation of basic and diluted net income per share is determined using net income applicable to common stockholders as the numerator and the number of shares included in the denominator as follows (in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Basic net income per share: Net income applicable to common stockholders $ 4,664 $ 18,947 $ 57,837 $ 62,066 Weighted average common shares outstanding 56,798 58,994 57,486 59,675 Basic net income per share $ 0.08 $ 0.32 $ 1.01 $ 1.04 Diluted net income per share: Net income applicable to common stockholders $ 4,664 $ 18,947 $ 57,837 $ 62,066 Weighted average common shares outstanding 56,798 58,994 57,486 59,675 Dilutive shares from assumed conversion of convertible senior notes - 1,701 676 1,713 Dilutive stock options and restricted stock 944 1,540 1,056 1,527 Diluted weighted average common shares outstanding 57,742 62,235 59,218 62,915 Diluted net income per share $ 0.08 $ 0.30 $ 0.98 $ 0.99

OTHER ACCRUED LIABILITIES (Tabl

OTHER ACCRUED LIABILITIES (Tables)	9 Months Ended
	Sep. 30, 2018
Payables and Accruals [Abstract]
Other Accrued Liabilities	The following table presents the major components of Other Accrued Liabilities September 30, December 31, 2018 2017 Payroll and related taxes $ 26,303 $ 27,840 Customer deposits 23,044 26,059 Warranty 21,465 20,132 Chassis converter pool agreements 16,653 18,326 Self-insurance 10,755 9,996 Accrued taxes 4,731 9,224 All other 17,359 17,333 $ 120,310 $ 128,910
Changes in product warranty accrual	The following table presents the changes in the product warranty accrual included in Other Accrued Liabilities 2018 2017 Balance as of January 1 $ 20,132 $ 20,520 Provision for warranties issued in current year 5,272 4,159 Supreme Acquisition - 1,581 (Recovery of) Provision for pre-existing warranties - (225 ) Payments (3,939 ) (4,928 ) Balance as of September 30 $ 21,465 $ 21,107

SEGMENTS (Tables)

SEGMENTS (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Reportable Segment Information	Reportable segment information is as follows (in thousands): Commercial Diversified Final Mile Corporate and Trailer Products Products Products Eliminations Consolidated Three Months Ended September 30, 2018 Net sales External customers $ 368,301 $ 97,723 $ 87,049 $ - $ 553,073 Intersegment sales 41 4,638 - (4,679 ) - Total net sales $ 368,342 $ 102,361 $ 87,049 $ (4,679 ) $ 553,073 Income (Loss) from operations $ 32,453 $ (6,346 ) $ (1,495 ) $ (8,099 ) $ 16,513 Assets $ 358,150 $ 352,494 $ 475,934 $ 163,629 $ 1,350,207 2017 Net sales External customers $ 339,494 $ 85,604 $ - $ - $ 425,098 Intersegment sales (2 ) 3,246 - (3,244 ) - Total net sales $ 339,492 $ 88,850 $ - $ (3,244 ) $ 425,098 Income (Loss) from operations $ 36,319 $ 5,178 $ - $ (14,906 ) $ 26,591 Assets $ 362,209 $ 356,147 $ - $ 660,771 $ 1,379,127 Commercial Diversified Final Mile Corporate and Trailer Products Products Products Eliminations Consolidated Nine Months Ended September 30, 2018 Net sales External customers $ 1,098,182 $ 275,183 $ 283,717 $ - $ 1,657,082 Intersegment sales 89 16,466 - (16,555 ) - Total net sales $ 1,098,271 $ 291,649 $ 283,717 $ (16,555 ) $ 1,657,082 Income (Loss) from operations $ 102,718 $ 3,078 $ 9,372 $ (26,959 ) $ 88,209 Assets $ 358,150 $ 352,494 $ 475,934 $ 163,629 $ 1,350,207 2017 Net sales External customers $ 962,371 $ 261,346 $ - $ - $ 1,223,717 Intersegment sales 50 8,241 - (8,291 ) - Total net sales $ 962,421 $ 269,587 $ - $ (8,291 ) $ 1,223,717 Income (Loss) from operations $ 111,865 $ 14,844 $ - $ (31,186 ) $ 95,523 Assets $ 362,209 $ 356,147 $ - $ 660,771 $ 1,379,127
Major Product Categories and Percentage of Consolidated Net Sales	The Company offers products primarily in four general categories: (1) new trailers, (2) used trailers, (3) components, parts and service and (4) equipment and other. The following table sets forth the major product categories and their percentage of consolidated net sales (dollars in thousands): Commercial Trailer Products Diversified Products Final Mile Products Corporate and Eliminations Consolidated $ $ $ $ $ % Three Months Ended September 30, 2018 New trailers 354,003 44,399 - - 398,402 72.0 Used trailers 1,888 775 - - 2,663 0.5 Components, parts and service 8,090 29,064 2,304 (4,676 ) 34,782 6.3 Equipment and other 4,361 28,123 84,745 (3 ) 117,226 21.2 Total net sales 368,342 102,361 87,049 (4,679 ) 553,073 100.0 2017 New trailers 319,463 35,225 - - 354,688 83.4 Used trailers 3,245 601 - - 3,846 0.9 Components, parts and service 12,255 27,881 - (3,244 ) 36,892 8.7 Equipment and other 4,529 25,143 - - 29,672 7.0 Total net sales 339,492 88,850 - (3,244 ) 425,098 100.0 Commercial Trailer Products Diversified Products Final Mile Products Corporate and Eliminations Consolidated $ $ $ $ $ % Nine Months Ended September 30, 2018 New trailers 1,049,452 115,840 - - 1,165,292 70.3 Used trailers 8,794 2,489 - - 11,283 0.7 Components, parts and service 25,780 94,958 7,340 (16,529 ) 111,549 6.7 Equipment and other 14,245 78,362 276,377 (26 ) 368,958 22.3 Total net sales 1,098,271 291,649 283,717 (16,555 ) 1,657,082 100.0 2017 New trailers 906,058 99,210 - - 1,005,268 82.1 Used trailers 5,368 2,457 - - 7,825 0.6 Components, parts and service 38,100 93,750 - (8,291 ) 123,559 10.1 Equipment and other 12,895 74,170 - - 87,065 7.2 Total net sales 962,421 269,587 - (8,291 ) 1,223,717 100.0

Purchase Price Allocation (Deta

Purchase Price Allocation (Detail) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Sep. 27, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Goodwill		$ 311,044	$ 313,626	$ 317,464	$ 148,367
Acquisition, net of cash acquired		$ 0	$ 323,487
Supreme Industries Inc. [Member]
Cash	$ 36,878
Accounts receivable	25,196
Inventories	33,471
Prepaid expense and other	23,916
Property, plant, and equipment	59,891
Intangibles	161,200
Goodwill	167,714
Other assets	127
Total assets acquired	508,393
Current portion of long term debt	7,167
Accounts payable	10,546
Other accrued liabilites	55,518
Deferred income taxes	71,880
Long term liabilities	2,918
Total liabilities assumed	148,029
Net assets acquired	360,364
Acquisition, net of cash acquired	$ 323,486

Intangible Assets (Detail)

Intangible Assets (Detail) - Supreme Industries Inc. [Member] $ in Thousands	1 Months Ended
	Sep. 27, 2017USD ($)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 161,200
Tradename [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 20,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	20 years
Customer relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 139,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Backlog [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 2,200
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	1 year

Pro Forma Information (Detail)

Pro Forma Information (Detail) - Supreme Industries Inc. [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Net sales	$ 496,761	$ 1,454,599
Net income	$ 14,688	$ 58,341

Acquisition of supreme indust_3

Acquisition of supreme industries, Inc.- Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 27, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Combination, Acquisition Related Costs		$ 0	$ 8,704	$ 68	$ 8,704
Goodwill		311,044	313,626	311,044	313,626	$ 317,464	$ 148,367
Goodwill, Period Increase (Decrease)				1,500
Revenues		553,073	$ 425,098	1,657,082	1,223,717
Senior Notes [Member]
Debt Instrument, Face Amount	$ 325,000
Debt Instrument, Interest Rate, Stated Percentage	5.50%
Supreme Industries Inc. [Member]
Business Acquisition, Share Price	$ 21
Business Combination, Acquisition Related Costs				100	$ 8,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 161,200
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months						20,100
Finite-Lived Intangible Assets, Amortization Expense, Year Two						20,500
Finite-Lived Intangible Assets, Amortization Expense, Year Three						22,100
Finite-Lived Intangible Assets, Amortization Expense, Year Four						23,400
Finite-Lived Intangible Assets, Amortization Expense, Year Five						$ 18,900
Goodwill	167,714
Revenues		85,100		276,800
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 200		$ 14,200
Class A and Class B [Member]
Payments to Acquire Businesses, Gross	360,400
Class A and Class B [Member] | Supreme Industries Inc. [Member]
Payments to Acquire Businesses, Gross	$ 360,400

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory [Line Items]
Raw materials and components	$ 104,797	$ 83,834
Finished goods	101,490	54,000
Work in progress	18,281	29,123
Aftermarket parts	6,468	6,448
Used trailers	1,414	7,330
Total, Inventories	$ 232,450	$ 180,735

Prepaid expenses (Details)

Prepaid expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Chassis converter pool agreements	$ 16,653	$ 18,326
Assets held for sale	16,631	10,777
Income tax receivables	15,086	10,821
Restricted cash	5,618	0	$ 0
Insurance premiums & maintenance agreements	3,937	6,860
All other	14,633	10,515
Prepaid Expense and Other Assets, Current	$ 72,558	$ 57,299

Prepaid expenses (Details 1)

Prepaid expenses (Details 1) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Cash and cash equivalents	$ 104,121	$ 191,521	$ 153,702
Restricted cash included in prepaid expenses and other	5,618	0	0
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 109,739	$ 191,521	$ 153,702	$ 163,467

Debt - Additional Information (

Debt - Additional Information (Detail) $ in Thousands	1 Months Ended				3 Months Ended			9 Months Ended
	Nov. 17, 2017USD ($)	Sep. 26, 2017USD ($)	May 31, 2012USD ($)	Apr. 30, 2012USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 27, 2017USD ($)
Debt Instrument [Line Items]
Liquidity Position To Meet Future Obligations, Amount					$ 271,400			$ 271,400
Interest Paid					2,000	$ 1,900
Interest expense					7,044	3,187		21,649	$ 9,065
Gains (losses) on extinguishment of debt, total								(174)	(767)
Debt Instrument, Redemption, Description		The Senior Notes will mature on October 1, 2025. At any time prior to October 1, 2020, the Company may redeem some or all of the Senior Notes for cash at a redemption price equal to 100% of the aggregate principal amount of the Senior Notes being redeemed plus an applicable make-whole premium set forth in the indenture for the Senior Notes and accrued and unpaid interest to, but not including, the redemption date. Prior to October 1, 2020, the Company may redeem up to 40% of the Senior Notes at a redemption price of 105.50% of the principal amount, plus accrued and unpaid interest to, but not including, the redemption date, with the proceeds of certain equity offerings so long as if, after any such redemption occurs, at least 60% of the aggregate principal amount of the Senior Notes remains outstanding. On and after October 1, 2020, the Company may redeem some or all of the Senior Notes at redemption prices (expressed as percentages of principal amount) equal to 102.750% for the twelve-month period beginning on October 1, 2020, 101.375% for the twelve-month period beginning October 1, 2021 and 100% beginning on October 1, 2022, plus accrued and unpaid interest to, but not including, the redemption date. Upon the occurrence of a Change of Control (as defined in the indenture for the Senior Notes), unless the Company has exercised its optional redemption right in respect of the Senior Notes, the holders of the Senior Notes have the right to require the Company to repurchase all or a portion of the Senior Notes at a price equal to 101% of the aggregate principal amount of the Senior Notes, plus any accrued and unpaid interest to, but not including, the date of repurchase.
Amortization of Debt Issuance Costs and Discounts								200	100
Term Loan Credit Agreement Principal Amount								500
Convertible Senior Notes
Debt Instrument [Line Items]
Notes issued, aggregate principal amount				$ 150,000
Notes issued, interest rate				3.375%
Debt Conversion, Converted Instrument, Amount								44,600
Gains (losses) on extinguishment of debt, total								200
Proceeds from Notes Payable				$ 145,100
Debt Instrument Convertible Conversion Amount Settled Over the Principal								80,200
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt								35,500
Convertible Senior Notes | Walker Group Holdings LLC
Debt Instrument [Line Items]
Debt Instrument Maturity Year				2,018
Amended Credit Agreement
Debt Instrument [Line Items]
Interest Paid								5,900	$ 5,700
Gains (losses) on extinguishment of debt, total							$ 600
Term Loan Credit Agreement Principal Amount							$ 1,400
Senior Notes [Member]
Debt Instrument [Line Items]
Notes issued, aggregate principal amount										$ 325,000
Notes issued, interest rate										5.50%
Notes issued, interest payment frequency		The Senior Notes bear interest at the rate of 5.50% per annum from the date of issuance, and will pay interest semi-annually in cash on April 1 and October 1 of each year, beginning on April 1, 2018.
Credit facility, maturity date		Oct. 1, 2025
Interest expense					4,600			$ 13,800
Proceeds from Issuance of Senior Long-term Debt		$ 318,900
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maturity date								Jun. 4, 2020
Debt Instrument, Description of Variable Rate Basis								The Revolving Credit Facility (i) bears interest, at the Borrowers’ election, at (x) the London Interbank Offer Rate (LIBOR) (subject to a floor of 0%) plus a margin ranging from 150 basis points to 200 basis points, or (y) a base rate plus a margin ranging from 50 basis points to 100 basis points, in each case, based upon the monthly average excess availability under the Revolving Credit Facility, (ii) requires the Company to pay a monthly unused line fee equal to 25 basis points times the average unused availability under the Revolving Credit Facility, (iii) provides that if availability under the Revolving Credit Facility is less than 12.5% of the total commitment under the Revolving Credit Facility or if there exists an event of default, amounts in any of the Borrowers’ and the subsidiary guarantors’ deposit accounts (other than certain excluded accounts) will be transferred daily into a blocked account held by the Agent and applied to reduce the outstanding amounts under the Revolving Credit Facility, and (iv) requires the Company to maintain a minimum fixed charge coverage ratio of not less than 1.1 to 1.0 as of the end of any period of 12 fiscal months when excess availability under the Revolving Credit Facility is less than 10% of the total commitment under the Revolving Credit Facility.
Line of Credit Facility, Borrowing Capacity, Description								an uncommitted accordion feature allowing for an increase to the availability under the revolving credit facility of up to $50 million, subject to certain conditions
Revolving Credit Facility | Senior Secured Credit Facility
Debt Instrument [Line Items]
Notes issued, aggregate principal amount			$ 175,000
Term Loan Credit Agreement
Debt Instrument [Line Items]
Percentage of tranche loan amount on equal quarterly installments	0.25%
Line of Credit Facility, Amount Outstanding					$ 186,200			$ 186,200
Debt Instrument, Periodic Payment, Principal								$ 1,900
Term Loan Credit Agreement | Senior Secured Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 188,000		$ 188,000
Debt Instrument, Description of Variable Rate Basis	(i) LIBOR (subject to a floor of 0%) plus a margin of 225 basis points
Debt Instrument, Description			an uncommitted accordion feature to provide for additional senior secured term loans of up to $75 million plus an unlimited amount provided that the senior secured leverage ratio would not exceed 3.00 to 1.00, subject to certain conditions
Term Loan Credit Agreement | Incremental Senior Credit Facility
Debt Instrument [Line Items]
Senior Secured Leverage Ratio Covenant Requirements								3.00 to 1.00
Minimum | Revolving Credit Facility | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Fixed Charge Coverage Ratio Minimum					1			1
Maximum
Debt Instrument [Line Items]
Amortization of Debt Issuance Costs and Discounts					$ 100	$ 100
Maximum | Revolving Credit Facility | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Fixed Charge Coverage Ratio Minimum					1.1			1.1

Components of Long Term Debt (D

Components of Long Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term Debt	$ 511,169	$ 557,233
Less: unamortized discount and fees	(5,980)	(7,122)
Less: current portion	(1,880)	(46,020)
LONG-TERM DEBT	503,309	504,091
Convertible senior notes due 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt	0	44,561
Senior notes due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt	325,000	325,000
Other debt [Member]
Debt Instrument [Line Items]
Long-term Debt	0	93
Term loan credit agreement [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 186,169	$ 187,579

Contractual Coupon Interest Exp

Contractual Coupon Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Debt Instrument [Line Items]
Contractual coupon interest expense	$ 0	$ 379	$ 470	$ 1,194
Accretion of discount and fees on the liability component	$ 0	$ 374	$ 461	$ 1,159

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss	$ 4,900	$ 4,944	$ 0
Impairment of Intangible Assets, Finite-lived	7,000
Derivative, Notional Amount	25,100	25,100
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, recurring	900	900
Fair Value, Inputs, Level 1 | Supreme Industries Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, recurring	4,900	4,900
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, recurring	$ 16,300	$ 16,300

Financial Assets and Liabilitie

Financial Assets and Liabilities Accounted For at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	$ 506,275	$ 551,412
Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	319,818	319,377
Other debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	67
Convertible senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	44,046
Term loan credit agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	185,371	186,620
Capital lease obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	1,086	1,302
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	0
Fair Value, Inputs, Level 1 | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Other debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	0
Fair Value, Inputs, Level 1 | Convertible senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Term loan credit agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Capital lease obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	496,544	599,903
Fair Value, Inputs, Level 2 | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	310,375	328,250
Fair Value, Inputs, Level 2 | Other debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	0
Fair Value, Inputs, Level 2 | Convertible senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	83,605
Fair Value, Inputs, Level 2 | Term loan credit agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	186,169	188,048
Fair Value, Inputs, Level 2 | Capital lease obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	1,086	1,369
Fair Value, Inputs, Level 3 | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Other debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	0	67
Fair Value, Inputs, Level 3 | Convertible senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Term loan credit agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Capital lease obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,086	$ 1,302

Changes In The Carrying Amounts

Changes In The Carrying Amounts of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Balance as of January 1		$ 317,464	$ 148,367
Acquisition of Supreme		(1,520)	165,400
Effects of foreign currency		44	(141)
Impairment of goodwill	$ (4,900)	(4,944)	0
Balance as of September 30	$ 311,044	$ 311,044	$ 313,626

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) $ in Millions	Sep. 30, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs related to stock options, nonvested restricted stock, stock appreciation rights and performance units not yet recognized	$ 17.2

Contingencies - Additional Info

Contingencies - Additional Information (Detail) $ in Thousands, R$ in Millions	1 Months Ended		9 Months Ended
	Nov. 22, 2011USD ($)	Nov. 22, 2011BRL (R$)	Sep. 30, 2018USD ($)	Sep. 30, 2018BRL (R$)	Dec. 31, 2017USD ($)	May 31, 2012USD ($)
Loss Contingencies [Line Items]
Damages asserted by SVI | R$				R$ 20.8
Business combination, recognized identifiable assets acquired and liabilities assumed, contingent liability						$ 2,900
Chassis converter pool Liability, Current			$ 16,653		$ 18,326
Supreme Industries Inc. [Member]
Loss Contingencies [Line Items]
Damages asserted by SVI			40,000
Court-Imposed Interest, Fees or Inflation Adjustments
Loss Contingencies [Line Items]
Total ordered damages granted to Bk	$ 6,600
Court-Imposed Interest, Fees or Inflation Adjustments | Maximum
Loss Contingencies [Line Items]
Total ordered damages granted to Bk | R$		R$ 26.7
Chassis Converter Pool Agreements [Member]
Loss Contingencies [Line Items]
Other Inventory, Gross			$ 4,500

Calculation of Basic and Dilute

Calculation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic net income per share:
Net income applicable to common stockholders	$ 4,664	$ 18,947	$ 57,837	$ 62,066
Weighted average common shares outstanding	56,798	58,994	57,486	59,675
Basic net income per share	$ 0.08	$ 0.32	$ 1.01	$ 1.04
Diluted net income per share:
Net income applicable to common stockholders	$ 4,664	$ 18,947	$ 57,837	$ 62,066
Weighted average common shares outstanding	56,798	58,994	57,486	59,675
Dilutive shares from assumed conversion of convertible senior notes	0	1,701	676	1,713
Dilutive stock options and restricted stock	944	1,540	1,056	1,527
Diluted weighted average common shares outstanding	57,742	62,235	59,218	62,915
Diluted net income per share	$ 0.08	$ 0.30	$ 0.98	$ 0.99

Net Income per share - Addition

Net Income per share - Additional Information (Details Textual) - $ / shares	Sep. 30, 2018	Sep. 30, 2017
Convertible Debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Price	$ 11.70	$ 11.70

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Investments, Owned, Federal Income Tax Note [Line Items]
Effective income tax rate reconciliation at federal statutory income tax rate			21.00%	35.00%
Income Tax Expense (Benefit)	$ 5,338	$ 10,728	$ 21,209	$ 32,321
Effective Income Tax Rate Reconciliation, Percent	53.40%	36.20%	26.80%	34.20%
Deferred Income Tax Assets, Net					$ 3,100

Major Components of Other Accru

Major Components of Other Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Accrued Liabilities [Line Items]
Payroll and related taxes	$ 26,303	$ 27,840
Customer deposits	23,044	26,059
Warranty	21,465	20,132	$ 21,107	$ 20,520
Chassis converter pool agreements	16,653	18,326
Self-Insurance	10,755	9,996
Accrued taxes	4,731	9,224
All other	17,359	17,333
Other accrued liabilities	$ 120,310	$ 128,910

Product Warranty Accrual Includ

Product Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Other Accrued Liabilities [Line Items]
Balance as of January 1	$ 20,132	$ 20,520
Provision for warranties issued in current year	5,272	4,159
Supreme Acquisition	0	1,581
(Recovery of) Provision for pre-existing warranties	0	(225)
Payments	(3,939)	(4,928)
Balance as of September 30	$ 21,465	$ 21,107

Reportable Segment Information

Reportable Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Net Sales
Total net sales	$ 553,073	$ 425,098	$ 1,657,082	$ 1,223,717
Income (Loss) from operations	16,513	26,591	88,209	95,523
Assets	1,350,207	1,379,127	1,350,207	1,379,127	$ 1,351,513
External Customers
Net Sales
Total net sales	553,073	425,098	1,657,082	1,223,717
Intersegment Sales
Net Sales
Total net sales	0	0	0	0
Commercial Trailer Products
Net Sales
Total net sales	368,342	339,492	1,098,271	962,421
Income (Loss) from operations	32,453	36,319	102,718	111,865
Assets	358,150	362,209	358,150	362,209
Commercial Trailer Products | External Customers
Net Sales
Total net sales	368,301	339,494	1,098,182	962,371
Commercial Trailer Products | Intersegment Sales
Net Sales
Total net sales	41	(2)	89	50
Diversified Products
Net Sales
Total net sales	102,361	88,850	291,649	269,587
Income (Loss) from operations	(6,346)	5,178	3,078	14,844
Assets	352,494	356,147	352,494	356,147
Diversified Products | External Customers
Net Sales
Total net sales	97,723	85,604	275,183	261,346
Diversified Products | Intersegment Sales
Net Sales
Total net sales	4,638	3,246	16,466	8,241
Final Mile Products
Net Sales
Total net sales	87,049	0	283,717	0
Income (Loss) from operations	(1,495)	0	9,372	0
Assets	475,934	0	475,934	0
Final Mile Products | External Customers
Net Sales
Total net sales	87,049	0	283,717	0
Final Mile Products | Intersegment Sales
Net Sales
Total net sales	0	0	0	0
Corporate and Eliminations
Net Sales
Total net sales	(4,679)	(3,244)	(16,555)	(8,291)
Income (Loss) from operations	(8,099)	(14,906)	(26,959)	(31,186)
Assets	163,629	660,771	163,629	660,771
Corporate and Eliminations | External Customers
Net Sales
Total net sales	0	0	0	0
Corporate and Eliminations | Intersegment Sales
Net Sales
Total net sales	$ (4,679)	$ (3,244)	$ (16,555)	$ (8,291)

Major Product Categories and Pe

Major Product Categories and Percentage of Consolidated Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Product Information [Line Items]
Total net external sales	$ 553,073	$ 425,098	$ 1,657,082	$ 1,223,717
Sales Revenue, Net
Product Information [Line Items]
Percentage of consolidated net sales	100.00%	100.00%	100.00%	100.00%
Corporate and Eliminations
Product Information [Line Items]
Total net external sales	$ (4,679)	$ (3,244)	$ (16,555)	$ (8,291)
Commercial Trailer Products
Product Information [Line Items]
Total net external sales	368,342	339,492	1,098,271	962,421
Diversified Products
Product Information [Line Items]
Total net external sales	102,361	88,850	291,649	269,587
Final Mile Products
Product Information [Line Items]
Total net external sales	87,049	0	283,717	0
New Trailers
Product Information [Line Items]
Total net external sales	$ 398,402	$ 354,688	$ 1,165,292	$ 1,005,268
New Trailers | Sales Revenue, Net
Product Information [Line Items]
Percentage of consolidated net sales	72.00%	83.40%	70.30%	82.10%
New Trailers | Corporate and Eliminations
Product Information [Line Items]
Total net external sales	$ 0	$ 0	$ 0	$ 0
New Trailers | Commercial Trailer Products
Product Information [Line Items]
Total net external sales	354,003	319,463	1,049,452	906,058
New Trailers | Diversified Products
Product Information [Line Items]
Total net external sales	44,399	35,225	115,840	99,210
New Trailers | Final Mile Products
Product Information [Line Items]
Total net external sales	0	0	0	0
Used Trailers
Product Information [Line Items]
Total net external sales	$ 2,663	$ 3,846	$ 11,283	$ 7,825
Used Trailers | Sales Revenue, Net
Product Information [Line Items]
Percentage of consolidated net sales	0.50%	0.90%	0.70%	0.60%
Used Trailers | Corporate and Eliminations
Product Information [Line Items]
Total net external sales	$ 0	$ 0	$ 0	$ 0
Used Trailers | Commercial Trailer Products
Product Information [Line Items]
Total net external sales	1,888	3,245	8,794	5,368
Used Trailers | Diversified Products
Product Information [Line Items]
Total net external sales	775	601	2,489	2,457
Used Trailers | Final Mile Products
Product Information [Line Items]
Total net external sales	0	0	0	0
Components, parts and service
Product Information [Line Items]
Total net external sales	$ 34,782	$ 36,892	$ 111,549	$ 123,559
Components, parts and service | Sales Revenue, Net
Product Information [Line Items]
Percentage of consolidated net sales	6.30%	8.70%	6.70%	10.10%
Components, parts and service | Corporate and Eliminations
Product Information [Line Items]
Total net external sales	$ (4,676)	$ (3,244)	$ (16,529)	$ (8,291)
Components, parts and service | Commercial Trailer Products
Product Information [Line Items]
Total net external sales	8,090	12,255	25,780	38,100
Components, parts and service | Diversified Products
Product Information [Line Items]
Total net external sales	29,064	27,881	94,958	93,750
Components, parts and service | Final Mile Products
Product Information [Line Items]
Total net external sales	2,304	0	7,340	0
Equipment and other
Product Information [Line Items]
Total net external sales	$ 117,226	$ 29,672	$ 368,958	$ 87,065
Equipment and other | Sales Revenue, Net
Product Information [Line Items]
Percentage of consolidated net sales	21.20%	7.00%	22.30%	7.20%
Equipment and other | Corporate and Eliminations
Product Information [Line Items]
Total net external sales	$ (3)	$ 0	$ (26)	$ 0
Equipment and other | Commercial Trailer Products
Product Information [Line Items]
Total net external sales	4,361	4,529	14,245	12,895
Equipment and other | Diversified Products
Product Information [Line Items]
Total net external sales	28,123	25,143	78,362	74,170
Equipment and other | Final Mile Products
Product Information [Line Items]
Total net external sales	$ 84,745	$ 0	$ 276,377	$ 0

NEW ACCOUNTING PRONOUNCEMENTS (

NEW ACCOUNTING PRONOUNCEMENTS (Details textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	$ 5,300	$ 5,300
Goodwill, Impairment Loss	4,900	$ 4,944	$ 0
Accounting Standards Update 2016-04 [Member]
Goodwill, Impairment Loss	$ 4,900