Horizon Global (HZN) 10-K 18 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Mar. 12, 2019	Jun. 29, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Horizon Global Corp
Entity Central Index Key	0001637655
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		25,205,608
Smaller Reporting Company	false
Emerging Growth Company	true
Transition Period	true
Shell Company	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 145

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 27,650	$ 29,570
Receivables, net of allowance for doubtful accounts of approximately $5.1 million and $3.1 million at December 31, 2018 and December 31, 2017, respectively	108,340	91,770
Inventories, net	173,690	171,500
Prepaid expenses and other current assets	9,690	10,950
Total current assets	319,370	303,790
Property and equipment, net	102,280	113,020
Goodwill	12,660	138,190
Other intangibles, net	78,050	90,230
Deferred income taxes	2,690	4,290
Other assets	6,300	11,510
Total assets	521,350	661,030
Current liabilities:
Short-term borrowings and current maturities, long-term debt	13,860	16,710
Accounts payable	123,130	138,730
Accrued liabilities	65,820	53,070
Total current liabilities	202,810	208,510
Long-term debt	350,650	258,880
Deferred income taxes	14,150	14,870
Other long-term liabilities	19,960	38,370
Total liabilities	587,570	520,630
Commitments and contingencies (See Notes 13 and 14)
Shareholders' equity (deficit):
Preferred stock $0.01 par: Authorized 100,000,000 shares; Issued and outstanding: None	0	0
Common stock, $0.01 par: Authorized 400,000,000 shares; 25,866,747 shares issued and 25,180,241 outstanding at December 31, 2018, and 25,625,571 shares issued and 24,939,065 outstanding at December 31, 2017	250	250
Paid-in capital	160,990	159,830
Treasury stock, at cost: 686,506 shares at December 31, 2018 and December 31, 2017	(10,000)	(10,000)
Accumulated deficit	(222,720)	(18,760)
Accumulated other comprehensive income	7,760	10,570
Total Horizon Global shareholders' equity (deficit)	(63,720)	141,890
Noncontrolling interest	(2,500)	(1,490)
Total shareholders' equity (deficit)	(66,220)	140,400
Total liabilities and shareholders' equity	$ 521,350	$ 661,030

Consolidated Balance Sheet Pare

Consolidated Balance Sheet Parentheticals - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Consolidated Balance Sheet Parenthetical [Abstract]
Receivables, reserves	$ 5.1	$ 3.1
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	100,000,000	100,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	400,000,000	400,000,000
Common stock, issued shares	25,866,747	25,625,571
Common stock, outstanding shares	25,180,241	24,939,065
Treasury stock, outstanding shares	686,506	686,506

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net sales	$ 849,950	$ 892,980	$ 649,200
Cost of sales	(706,070)	(685,380)	(488,850)
Gross profit	143,880	207,600	160,350
Selling, general and administrative expenses	(185,360)	(171,620)	(145,150)
Net loss on dispositions of property and equipment	(2,140)	(1,220)	(540)
Impairment of goodwill and intangible assets	(126,770)	0	(8,360)
Operating profit (loss)	(170,390)	34,760	6,300
Other expense, net:
Interest expense	(27,740)	(22,410)	(20,080)
Loss on extinguishment of debt	0	(4,640)	0
Other expense, net	(13,130)	(2,730)	(2,610)
Other expense, net	(40,870)	(29,780)	(22,690)
Income (loss) before income tax	(211,260)	4,980	(16,390)
Income tax benefit (expense)	6,360	(9,750)	3,730
Net loss	(204,900)	(4,770)	(12,660)
Less: Net loss attributable to noncontrolling interest	(940)	(1,220)	(300)
Net loss attributable to Horizon Global	$ (203,960)	$ (3,550)	$ (12,360)
Net loss per share attributable to Horizon Global:
Net income (loss) per share attributable to Horizon Global, Basic (in usd per share)	$ (8.14)	$ (0.14)	$ (0.66)
Net income (loss) per share attributable to Horizon Global, Diluted (in usd per share)	$ (8.14)	$ (0.14)	$ (0.66)
Weighted average common shares outstanding:
Weighted average common shares—basic (in shares)	25,053,013	24,781,349	18,775,500
Weighted average common shares—diluted (in shares)	25,053,013	24,781,349	18,775,500

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (204,900)	$ (4,770)	$ (12,660)
Other comprehensive income (loss), net of tax:
Foreign currency translation and other	(5,150)	17,840	(10,590)
Derivative instruments	2,270	540	(220)
Total other comprehensive income (loss), net of tax	(2,880)	18,380	(10,810)
Total comprehensive income (loss)	(207,780)	13,610	(23,470)
Less: Comprehensive loss attributable to noncontrolling interest	(1,010)	(1,190)	(300)
Comprehensive income (loss) attributable to Horizon Global	$ (206,770)	$ 14,800	$ (23,170)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income	$ (204,900)	$ (4,770)	$ (12,660)
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisition impact:
Net loss on dispositions of property and equipment	2,140	1,220	540
Impairment of goodwill and intangible assets	126,770	0	8,360
Depreciation	16,440	14,930	10,260
Amortization of intangible assets	8,940	10,410	7,960
Amortization of original issuance discount and debt issuance costs	8,330	6,940	2,090
Deferred income taxes	1,360	(100)	(8,430)
Non-cash compensation expense	1,550	3,630	3,860
Loss on extinguishment of debt	0	4,640	0
Amortization of purchase accounting inventory step-up	0	420	6,680
(Increase) decrease in receivables	(21,890)	(9,540)	4,740
(Increase) decrease in inventories	(7,530)	(17,710)	10,650
(Increase) decrease in prepaid expenses and other assets	6,940	1,410	(6,300)
Increase (decrease) in accounts payable and accrued liabilities	(6,770)	3,540	6,300
Other, net	(1,880)	(860)	1,360
Net cash (used for) provided by operating activities	(70,500)	14,160	35,410
Cash Flows from Investing Activities:
Capital expenditures	(13,870)	(27,290)	(14,540)
Acquisition of businesses, net of cash acquired	0	(19,800)	(94,370)
Net proceeds from disposition of product line, property and equipment	200	6,350	470
Net cash used for investing activities	(13,670)	(40,740)	(108,440)
Cash Flows from Financing Activities:
Proceeds from borrowing on credit facilities	23,380	52,310	41,820
Repayments of borrowings on credit facilities	(28,520)	(50,910)	(40,200)
Proceeds from Term B Loan, net of issuance costs	45,430	0	148,180
Repayments of borrowings on Term B Loan, including transaction fees	(9,090)	(189,760)	(10,000)
Proceeds from ABL Facility, net of issuance costs	87,930	139,100	118,430
Repayments of borrowings on ABL Facility	(36,380)	(129,100)	(118,430)
Repayments of Westfalia Group debt	0	0	(39,000)
Repurchase of common stock	0	(10,000)	0
Proceeds from sale of common stock in connection with the Company's equity offering, net of issuance costs	0	79,920	0
Proceeds from issuance of Convertible Notes, net of issuance costs	0	121,130	0
Proceeds from issuance of Warrants, net of issuance costs	0	20,930	0
Payments on Convertible Note Hedges, inclusive of issuance costs	0	(29,680)	0
Other, net	(390)	(240)	(300)
Net cash provided by financing activities	82,360	3,700	100,500
Effect of exchange rate changes on cash	(110)	2,210	(750)
Increase (decrease) for the year	(1,920)	(20,670)	26,720
At beginning of year	29,570	50,240	23,520
At end of year	27,650	29,570	50,240
Supplemental disclosure of cash flow information:
Cash paid for interest	18,630	14,270	17,330
Cash paid for taxes	5,780	7,740	4,760
Non-cash investing/financing activities:
Non-cash equity issuance for acquisition of businesses	$ 0	$ 0	$ 49,960

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Previously Reported	Restatement Adjustment	Common Stock	Common StockPreviously Reported	Paid-in Capital	Paid-in CapitalPreviously Reported	Paid-in CapitalRestatement Adjustment	Treasury Stock	Accumulated Deficit	Accumulated DeficitPreviously Reported	Accumulated DeficitRestatement Adjustment	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)Previously Reported	Accumulated Other Comprehensive Income (Loss)Restatement Adjustment	Total Horizon Global Shareholders' Equity	Total Horizon Global Shareholders' EquityPreviously Reported	Noncontrolling Interest	Noncontrolling InterestPreviously Reported
Beginning balances at Dec. 31, 2015	$ 2,000			$ 180		$ 1,260			$ 0	$ (1,910)			$ 2,470			$ 2,000		$ 0
Net loss	(12,660)									(12,360)						(12,360)		(300)
Other comprehensive income (loss), net of tax	(10,810)												(10,810)			(10,810)
Issuance of common stock	49,960			30		49,930										49,960
Shares surrendered upon vesting of employees' share based payment awards to cover tax obligations	(330)					(330)										(330)
Exercise of stock options	40					40										40
Non-cash compensation expense	3,860					3,860										3,860
Impact of adoption of new accounting guidance related to stock based compensation, paid-in capital	0					40
Impact of adoption of new accounting guidance related to stock based compensation, accumulated deficit										(40)
Ending balances at Dec. 31, 2016	32,060			210		54,800			0	(14,310)			(8,340)			32,360		(300)
Net loss	(4,770)									(3,550)						(3,550)		(1,220)
Other comprehensive income (loss), net of tax	18,380												18,350			18,350		30
Issuance of common stock	79,920			40		79,880										79,920
Repurchase of common stock	(10,000)								(10,000)							(10,000)
Shares surrendered upon vesting of employees' share based payment awards to cover tax obligations	(260)					(260)										(260)
Exercise of stock options	50					50										50
Non-cash compensation expense	3,630					3,630										3,630
Issuance of Warrants, net of issuance costs	20,930					20,930										20,930
Initial equity component of the 2.75% Convertible Senior Notes due 2022, net of issuance costs and tax	20,010					20,010										20,010
Convertible Note Hedges, net of issuance costs and tax	(19,550)					(19,550)										(19,550)
Ending balances at Dec. 31, 2017	140,400	$ 140,400		250	$ 250	159,830	$ 159,490		(10,000)	(18,760)	$ (17,860)		10,570	$ 10,010		141,890	$ 141,890	(1,490)	$ (1,490)
Ending balances (Accounting Standards Update 2018-02) at Dec. 31, 2017			$ 0					$ 340				$ (900)			$ 560
Net loss	(204,900)									(203,960)						(203,960)		(940)
Other comprehensive income (loss), net of tax	(2,880)												(2,810)			(2,810)		(70)
Shares surrendered upon vesting of employees' share based payment awards to cover tax obligations	(390)					(390)										(390)
Non-cash compensation expense	1,550					1,550										1,550
Ending balances at Dec. 31, 2018	$ (66,220)			$ 250		$ 160,990			$ (10,000)	$ (222,720)			$ 7,760			$ (63,720)		$ (2,500)

General

General	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Nature of operations and basis of presentation. Horizon Global Corporation (“Horizon,” “Horizon Global,” “we,” or the “Company”) is a global designer, manufacturer and distributor of a wide variety of high quality, custom-engineered towing, trailering, cargo management and other related accessories. These products are designed to support original equipment manufacturers (“OEMs”) and original equipment servicers (“OESs”) (collectively, “OEs”), aftermarket and retail customers within the agricultural, automotive, construction, horse/livestock, industrial, marine, military, recreational, trailer and utility markets. The Company groups its business into operating segments by the region in which sales and manufacturing efforts are focused. The Company’s operating segments are Horizon Americas , Horizon Europe‑Africa , and Horizon Asia‑Pacific . See Note 18 , “ Segment Information ,” for further information on each of the Company’s operating segments. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of Americas (“U.S. GAAP”). Corporate history . On June 30, 2015, Horizon became an independent company as a result of the distribution by TriMas Corporation (“TriMas” or “former parent”) of 100 percent of the outstanding common shares of Horizon Global to TriMas shareholders (the “spin-off”). Each TriMas shareholder of record as of the close of business on June 25, 2015 (the “Record Date”) received two Horizon Global common shares for every five TriMas common shares held as of the Record Date. The spin-off was completed on June 30, 2015 and was structured to be tax-free to both TriMas and Horizon Global shareholders. On July 1, 2015, Horizon Global common shares began regular trading on the New York Stock Exchange under the ticker symbol “HZN”.

New Accounting Pronouncements

New Accounting Pronouncements	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements New accounting pronouncements not yet adopted In June 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-07, “Compensation - Stock Compensation (Topic 718)” (“ASU 2018-07”). ASU 2018-07 expands the scope of Accounting Standard Codification (“ASC”) 718 to include all share-based payment arrangements related to the acquisition of goods and services from both non-employees and employees. ASU 2018-07 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018 with early adoption permitted. The standard is not expected to have a significant impact on the Company's consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities” (“ASU 2017-12”). ASU 2017-12 eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires, for qualifying hedges, the entire change in the fair value of a hedging instrument to be presented in the same income statement line as the hedged item. The guidance also modifies the accounting for components excluded from the assessment of hedge effectiveness, eases documentation and assessment requirements and modifies certain disclosure requirements. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, including interim periods within those annual periods, with early adoption permitted and should be applied on a modified retrospective basis. The standard is not expected to have a significant impact on the Company's consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which supersedes the lease requirements in “Leases (Topic 840).” The objective of this update is to establish the principles that lessees and lessors shall apply to report useful information to users of financial statements about the amount, timing, and uncertainty of cash flows arising from a lease. Under this guidance, lessees are required to recognize on the balance sheet a lease liability and a right-of-use asset for all leases, with the exception of short-term leases with terms of twelve months or less. The lease liability represents the lessee’s obligation to make lease payments arising from a lease and will be measured as the present value of the lease payments. The right-of-use asset represents the lessee’s right to use a specified asset for the lease term, and will be measured at the lease liability amount, adjusted for lease prepayment, lease incentives received and the lessee’s initial direct costs. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those annual periods, with early adoption permitted. The Company has elected the package of practical expedients, excluding the lease term hindsight, as permitted by the transition guidance. The Company has made an accounting policy election to exempt leases with an initial term of twelve months or less from balance sheet recognition. Instead, short-term leases will be expensed over the lease term. The Company will adopt the standard January 1, 2019, by applying the modified retrospective method without restatement of comparative periods' financial information, as permitted by the transition guidance. The impact of adoption will result in the recognition of right-of-use assets estimated in the range of $70.0 million to $80.0 million , with corresponding lease liabilities of the same amount. The standard will not have a significant impact on the Company's consolidated results of operations and cash flows. Accounting pronouncements recently adopted In February 2018, the FASB issued ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” (“ASU 2018-02”). ASU 2018-02 allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act (the “Act”). The Company adopted the standard in the third quarter of 2018 and the impact of the adoption of ASU 2018-02 is approximately a $0.9 million increase to accumulated deficit, a $ 0.3 million increase to paid-in capital, and a $ 0.6 million increase to accumulated other comprehensive income. In May 2017, the FASB issued ASU 2017-09, “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting” (“ASU 2017-09”). ASU 2017-09 amends the scope of modification accounting for share-based payment arrangements and provides guidance on when an entity would be required to apply modification accounting. The Company adopted ASU 2017-09 on January 1, 2018, on a prospective basis, and there was no impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”). ASU 2017-01 provides clarification on the definition of a business and adds guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. As of January 1, 2018, ASU 2017-01 became effective for the Company for any new acquisitions (or disposals), and there was no impact on the Company’s consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, “Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory” (“ASU 2016-16”). ASU 2016-16 provides an amendment to the accounting guidance related to the recognition of income tax consequences of an intra-entity transfer of an asset other than inventory. Under the new guidance, an entity is required to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Under the current guidance, the income tax effects are deferred until the asset has been sold to an outside party. The Company adopted ASU 2016-16 on January 1, 2018, on a modified retrospective basis, and there was no impact on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force)” (“ASU 2016-15”). ASU 2016-15 was issued to reduce differences in practice with respect to how specific transactions are classified in the statement of cash flows. The Company adopted ASU 2016-15 on January 1, 2018, and there was no impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09” or “Topic 606”). ASU 2014-09 supersedes most of the existing guidance on revenue recognition in ASC Topic 605, “Revenue Recognition” (“Topic 605”), and establishes a broad principle that would require an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company adopted Topic 606 as of January 1, 2018 using the modified retrospective transition method. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The Company did not record a cumulative adjustment related to the adoption of ASU 2014-09, and the effects of adoption were not significant. See Note 4 , “ Revenues, ” for further information.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation. The consolidated financial statements include the assets, liabilities, revenues and expenses of Horizon Global and its wholly-owned subsidiaries. In addition, the consolidated financial statements include the consolidation of a variable interest entity (“VIE”) for which the Company has been deemed to be the primary beneficiary. The consolidated financial statements include the assets and liabilities of the VIE at December 31, 2018 and 2017 , and the revenue and expenses of the VIE for the period beginning October 1, 2016. Intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires management of the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. Such estimates and assumptions also affect the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the carrying amount of property and equipment, goodwill and other intangibles, valuation allowances for receivables, inventories and deferred income tax assets, valuation of derivatives, estimated future unrecoverable lease costs, estimated uncertain tax positions, legal and product liability matters, assets and obligations related to employee benefits, and the respective allocation methods. Actual results may differ from such estimates and assumptions. Cash and Cash Equivalents. The Company considers cash on hand and on deposit and investments in all highly liquid debt instruments with initial maturities of three months or less to be cash and cash equivalents. Account Receivables. Receivables consist primarily of amounts from contracts with customers for the sale of towing, trailering, cargo management and other related accessories. Receivables are presented net of allowances for doubtful accounts of approximately $5.1 million and $3.1 million at December 31, 2018 and 2017 , respectively. The Company monitors its exposure for credit losses and maintains allowances for doubtful accounts based upon the Company’s best estimate of probable losses inherent in the accounts receivable balances. The Company does not believe that significant credit risk exists due to its diverse customer base. Account Receivables Factoring. The Company has factoring arrangements with financial institutions to sell certain accounts receivable under certain recourse and non-recourse agreements. Total receivables sold under the factoring arrangements were approximately $242.8 million and $257.5 million as of December 31, 2018 and 2017 , respectively. The sales of accounts receivable in accordance with the factoring arrangements are reflected as a reduction of Receivables, net in the consolidated balance sheets as they meet the applicable criteria of Accounting Standards Codification (“ASC”) 860, “ Transfers and Servicing.” The holdback amounts due from the factoring institutions were approximately $ 3.1 million each as of December 31, 2018 and 2017 , respectively, and is shown in Receivables, net in the consolidated balance sheets. Cash proceeds from these arrangements are included in the change in receivables under the operating activities section of the consolidated statements of cash flows. The Company pays factoring fees associated with the sale of receivables based on the dollar value of the receivables sold. Total factoring fees were $0.7 million for each the years ended December 31, 2018 and 2017 , respectively. Inventories. Inventories are stated at lower of cost or net realizable value, with cost determined using the first-in, first-out basis. Direct materials, direct labor and allocations of variable and fixed manufacturing-related overhead are included in inventory cost. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal and transportation. Property and Equipment. Property and equipment additions, including significant improvements, are recorded at cost. Upon retirement or disposal of property and equipment, the historical cost and accumulated depreciation are removed from the accounts, and any gain or loss is included in the accompanying consolidated statements of operations. Repair and maintenance costs are charged to expense as incurred. Depreciation. Depreciation is computed principally using the straight-line method over the estimated useful lives of the assets. Annual depreciation rates are as follows: Fixed Asset Category Estimated Useful Life Building and Land/building improvements 10 - 40 years Machinery and Equipment 3 - 15 years Impairment of Long-Lived Assets and Definite-Lived Intangible Assets. The Company reviews, on at least a quarterly basis, the financial performance of each business unit for indicators of impairment. In reviewing for impairment indicators, the Company considers events or changes in circumstances such as business prospects, customer retention, market trends, potential product obsolescence, competitive activities and other economic factors. An impairment loss is recognized when the carrying value of an asset group exceeds the future net undiscounted cash flows expected to be generated by that asset group. The impairment loss recognized is the amount by which the carrying value of the asset group exceeds its fair value. Goodwill. Goodwill is acquired in a business combination and represents the excess of purchase consideration over the fair value of assets acquired and liabilities assumed. The Company determines its reporting units at the individual operating segment level, or one level below, when there is discrete financial information available that is regularly reviewed by segment management for evaluating operating results. For purposes of the Company’s annual goodwill impairment test, the Company had three reporting units which are the same as its three operating segments, of which the Horizon Americas and Horizon Asia-Pacific reporting units had goodwill of $4.5 million and $8.2 million , respectively, at the 2018 annual test for impairment. The Horizon Europe-Africa reporting unit’s goodwill was written off during 2018 due to interim triggering events that resulted in $124.7 million of impairment charges. See Note 6 , Goodwill and Other Intangible Assets for further information. Goodwill is reviewed by the Company for impairment on a reporting unit basis annually on October 1st or more frequently if indicators are present or changes in circumstances suggest that impairment may exist. The Company performs a qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying amount. If not, no further goodwill impairment testing is performed. If so, then the Company performs testing for possible impairment in a one-step quantitative process. The fair value of a reporting unit is compared with its carrying value, including goodwill. If fair value exceeds the carrying value, goodwill is not considered to be impaired. If the fair value of a reporting unit is below the carrying value, then goodwill is considered to be impaired in the amount of the excess of a reporting unit’s carrying value over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. Indefinite-Lived Intangibles. The Company assesses indefinite-lived intangible assets for impairment annually on October 1st by reviewing relevant quantitative factors. More frequent evaluations may be required if the Company experiences changes in its business climate or as a result of other triggering events that take place. Indefinite-lived intangible assets are tested for impairment by comparing the fair value of each intangible asset with its carrying value. The value of indefinite-lived intangible assets are based on the present value of projected cash flows using a relief from royalty approach. If the carrying value exceeds fair value, the intangible asset is considered impaired and is reduced to fair value. The Company recognized indefinite-lived intangible impairment charges of $2.1 million for the year ended December 31, 2018. See Note 6 , Goodwill and Other Intangible Assets, for further information. Self-insurance. Horizon instituted self-insurance plans for losses and liabilities related to workers’ compensation and comprehensive general, product and vehicle liability at the time of spin-off which ran through June 30, 2016. The Company was generally responsible for up to $1.0 million per occurrence under our comprehensive general, product and vehicle liability plan and $0.5 million under our workers’ compensation plan. Beginning on July 1, 2016, Horizon is fully insured for workers’ compensation and retains no liability for claims under the new plan, and are generally responsible for up to $0.8 million per occurrence under our comprehensive general, product and vehicle liability plan. Reserves for claim losses, including an estimate of related litigation defense costs, are recorded based upon the Company’s estimates of the aggregate liability for claims incurred using actuarial assumptions about future events. Changes in assumptions for factors such as actual experience could cause these estimates to change. Revenue Recognition. Revenue is measured based on a consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. See Note 4 , Revenue , for further information on the Company’s revenue recognition in accordance with ASC Topic 606. Cost of Sales. Cost of sales includes material, labor and overhead costs incurred in the manufacture of products sold in the period. Material costs include raw material, purchased components, outside processing and shipping and handling costs. Overhead costs consist of variable and fixed manufacturing costs, wages and fringe benefits, and purchasing, receiving and inspection costs. Research and Development Costs. Research and development (“R&D”) costs are expensed as incurred. R&D expenses were approximately $15.5 million , $15.4 million and $10.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in cost of sales in the accompanying consolidated statements of operations. Selling, General and Administrative Expenses. Selling, general and administrative expenses include the following: costs related to the advertising, sale, marketing and distribution of the Company’s products, outbound freight costs, amortization of customer intangible assets, costs of finance, human resources, legal functions, executive management costs and other administrative expenses. Shipping and Handling Expenses. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of sales. Other outbound freight costs are included in selling, general and administrative expenses. Shipping and handling expenses, including those of Horizon Americas ’ distribution network, are included in cost of sales in the accompanying consolidated statements of operations. Shipping and handling costs were $19.5 million , $13.3 million and $9.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Advertising and Sales Promotion Costs. Advertising and sales promotion costs are expensed as incurred. Advertising costs were approximately $4.4 million , $6.2 million and $6.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in selling, general and administrative expenses in the accompanying consolidated statements of operations. Income Taxes. The Company computes income taxes using the asset and liability method, whereby deferred income taxes are provided for the temporary differences between the financial reporting basis and the tax basis of assets and liabilities and for operating loss and tax credit carryforwards. Under this method, changes in tax rates and laws are recognized in income in the period such changes are enacted. Valuation allowances are determined based on an assessment of positive and negative evidence on a jurisdiction-by-jurisdiction basis and are utilized to reduce deferred tax assets to the amount more likely than not to be realized. The Company recognizes the effect of income tax positions only if those positions have a probability of more likely than not of being sustained in an audit. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to uncertain tax positions within income tax expense. Accrued interest and penalties are included within the related tax liability line in the consolidated balance sheets. The provision for federal, foreign, and state and local income taxes is calculated on income before income taxes based on current tax law and includes the cumulative effect of any changes in tax rates from those used previously in determining deferred tax assets and liabilities. Such provision differs from the amounts currently payable because certain items of income and expense are recognized in different reporting periods for financial reporting purposes than for income tax purposes. Foreign Currency Translation. The financial statements of subsidiaries located outside of the United States are measured using the currency of the primary economic environment in which they operate as their functional currency. When translating into U.S. dollars, income and expense items are translated at period average exchange rates and assets and liabilities are translated at exchange rates in effect at the balance sheet date. Translation adjustments resulting from translating the functional currency into U.S. dollars are deferred as a component of accumulated other comprehensive income (loss) in the consolidated statements of shareholders’ equity. Net foreign currency transaction gains or losses were approximately a $1.0 million loss for the year ended December 31, 2018 , a $0.8 million loss for the year ended December 31, 2017 , and a $0.5 million gain for the year ended December 31, 2016 . Derivative Financial Instruments. The Company records all derivative financial instruments at fair value on the balance sheets as either assets or liabilities, and changes in their fair values are immediately recognized in earnings if the derivatives do not qualify as effective hedges. If a derivative is designated as a fair value hedge, then the effective portion of changes in the fair value of the derivative are offset against the changes in the fair value of the underlying hedged item. If a derivative is designated as a cash flow hedge, then the effective portion of the changes in the fair value of the derivative is recognized as a component of other comprehensive income (loss) until the underlying hedged item is recognized in earnings or the forecasted transaction is no longer probable of occurring. When the underlying hedged transaction is realized or the hedged transaction is no longer probable, the gain or loss included in accumulated other comprehensive income (loss) is recorded in earnings and reflected in the consolidated statements of operations through the same line item as the underlying hedged item. The Company formally documents hedging relationships for all derivative transactions and the underlying hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions. Fair Value of Financial Instruments. In accounting for and disclosing the fair value of these instruments, the Company uses the following hierarchy: ▪ Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date; ▪ Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and ▪ Level 3 inputs are unobservable inputs for the asset or liability. Valuation of the Company’s foreign currency forward contracts and cross currency swaps are based on the income approach, which uses observable inputs such as forward currency exchange rates and swap rates. The carrying value of financial instruments reported in the balance sheets for current assets and current liabilities approximates fair value due to the short maturity of these instruments. Business Combinations. The Company records assets acquired and liabilities assumed from acquisitions at fair value. The fair value of working capital accounts, except inventory generally approximate book value. The valuation of inventory, property, plant and equipment, and intangible assets require significant assumptions. Inventory is recorded based on the estimated selling price less costs to sell, including completion, disposal and holding period costs with a reasonable profit margin. Property, plant and equipment is recorded at fair value using a combination of both the cost and market approaches for both the real and personal property acquired. Under the cost approach, consideration is given to the amount required to construct or purchase a new asset of equal value at current prices, with adjustments in value for physical deterioration, as well as functional and economic obsolescence. Under the market approach, recent transactions for similar types of assets are used as the basis for estimating fair value. For trademark/trade names and technology and other intangible assets, the estimated fair value is based on projected discounted future net cash flows using the relief-from-royalty method. For customer relationship intangible assets, the estimated fair value is based on projected discounted future cash flows using the excess earnings method. The relief-from-royalty and excess earnings method are both income approaches that utilize key assumptions such as forecasts of revenue and expenses over an extended period of time, royalty rate percentages, tax rates, and estimated costs of debt and equity capital to discount the projected cash flows. Earnings (Loss) Per Share. Basic earnings (loss) per share (“EPS”) is computed based upon the weighted average number of common shares outstanding for each period. Diluted EPS is computed based on the weighted average number of common shares and common equivalent shares. Common equivalent shares represent the effect of stock-based awards, warrants, and convertible notes during each period presented, which, if exercised, earned, or converted, would have a dilutive effect on EPS. Dilutive EPS are calculated to give effect to stock options and warrants, restricted shares outstanding, and convertible notes during each period. Loss per share excludes certain dilutive securities as inclusion results in an anti-dilutive effect. Environmental Obligations. The Company is subject to increasingly stringent environmental laws and regulations, including those relating to air emissions, wastewater discharges and chemical and hazardous waste management and disposal. Some of these environmental laws hold owners or operators of land or businesses liable for their own and for previous owners’ or operators’ releases of hazardous or toxic substances or wastes. Other environmental laws and regulations require the obtainment and compliance with environmental permits. To date, costs of complying with environmental requirements have not been material; however, the Company cannot quantify with certainty the potential impact of future compliance efforts and environmental remediation actions. While the Company must comply with existing and pending climate change legislation, regulation and international treaties or accords, current laws and regulations have not had a material impact on the Company’s business, capital expenditures or financial position. Future events, including those relating to climate change or greenhouse gas regulation could require the Company to incur expenses related to the modification or curtailment of operations, installation of pollution control equipment or investigation and cleanup of contaminated sites. Contingencies and Ordinary Course Claims. In the ordinary course of business, the Company is subject of, or party to, various pending or threatened legal actions, including those arising from alleged defects related to our products, product warranties, recalls, breach of contracts, intellectual property matters, employment-related matters and other litigation. Litigation is always subject to inherent uncertainty and the Company is not able to reasonably predict if any matter will be resolved in a manner that is materially adverse to the Company. An accrual for potential losses related to these contingencies is established when there is a probable occurrence of loss and the amount can be reasonably estimated. The Company does not record liabilities when the likelihood that a liability has been incurred is probable, but the amount cannot be reasonably estimated, or when the liability is believed to be only reasonably possible or remote. When the Company evaluates matters for accrual and disclosure purposes, management takes into consideration factors such as our historical experience with matters of a similar nature, the specific facts and circumstances asserted and the related jurisdictional legal proceedings, the likelihood that we will prevail, and the severity of any potential loss. We reevaluate and update our accruals as matters progress over time. The Company carries product liability, recall and other insurance to defray some of the costs if a claim settlement or judgment exceeds our self-insured retention limit. Refer to Note 14, “ Contingencies”, for additional information. Stock-based Compensation. The Company measures stock-based compensation expense at fair value as of the grant date in accordance with U.S. GAAP and recognizes such expenses over the vesting period of the stock-based employee awards. Stock options are issued with an exercise price equal to the opening market price of Horizon common shares on the date of grant. The fair value of stock options is determined using a Black-Scholes option pricing model, which incorporates assumptions regarding the expected volatility, expected option life, risk-free interest rate and expected dividend yield. In addition, the Company periodically updates its estimate of attainment for each restricted share with a performance factor based on current and forecasted results, reflecting the change from prior estimate, if any, in current period compensation expense. Other Comprehensive Income (Loss). The Company refers to other comprehensive income (loss) as revenues, expenses, gains and losses that under U.S. GAAP are included in comprehensive income (loss) but are excluded from net losses as these amounts are recorded directly as an adjustment to accumulated deficit. Other comprehensive income (loss) is comprised of foreign currency translation adjustments and changes in unrealized gains and losses on forward currency contracts and cross currency swaps.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenues	Revenues Revenue Recognition The following tables present the Company’s net sales by segments and disaggregated by major sales channel for the twelve months ended December 31, 2018 : Horizon Americas Horizon Horizon Total (dollars in thousands) Net Sales Automotive OEM $ 80,300 $ 174,040 $ 23,810 $ 278,150 Automotive OES 5,610 50,890 60,620 117,120 Aftermarket 114,450 77,190 25,070 216,710 Retail 115,920 — 11,460 127,380 Industrial 38,810 — 15,040 53,850 E-commerce 34,220 4,570 — 38,790 Other 1,380 16,570 — 17,950 Total $ 390,690 $ 323,260 $ 136,000 $ 849,950 Revenue is recognized when obligations under the terms of a contract with the Company’s customers are satisfied; generally, this occurs with the transfer of control of its towing, trailering, cargo management and other related accessory products. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring its products. Sales, value add, and other taxes the Company collects concurrent with revenue-producing activities are excluded from revenue. The Company’s payment terms vary by the type and location of its customers and the products offered. The term between invoicing and when payment is due is not significant. For the majority of the Company’s sales arrangements, the Company deems control to transfer at a single point in time and recognizes revenue when it ships products from its manufacturing facilities to its customers. Once a product has shipped, the customer is able to direct the use of, and obtain substantially all of the remaining benefits from, the asset. The Company considers control to transfer upon shipment because the Company has a present right to payment at that time, the customer has legal title to the asset, and the customer has significant risks and rewards of ownership of the asset. For certain sales arrangements within the automotive OEM and automotive OES sales channels, the Company deems control to transfer over time, and recognizes revenue as products are manufactured, when the terms of the arrangement include both a right to payment and contractual restrictions against the alternative use of its products. For revenue recognized over time, the Company estimates the amount of revenue earned at a given point during the production cycle based on certain costs factors such as raw materials and labor, incurred to date, plus a reasonable profit. The Company believes this method, which is the cost-to-cost input method, best estimates the revenue recognizable for these arrangements. At December 31, 2018 , the aggregate amount of the transaction prices allocated to remaining performance obligations was not material, and the Company will recognize this revenue as the manufacturing of the products is completed, which is expected to occur over the next 12 months. Provisions for customer volume rebates, product returns, discounts and allowances are variable consideration and are recorded as a reduction of revenue in the same period the related sales are recorded. Such provisions are calculated using historical averages adjusted for any expected changes due to current business conditions. Consideration given to customers for cooperative advertising is recognized as a reduction of revenue as there is no distinct good or service received in return for the advertising. The Company uses the most likely amount method to estimate variable consideration. Adjustments to estimates of variable consideration for previously recognized revenue were insignificant during the year ended December 31, 2018 . Contract Balances The timing of revenue recognition, billings and cash collections and payments results in billed accounts receivable, unbilled receivables (contract assets), and deferred revenues (contract liabilities). Revenue recognized over time gives rise to contract assets, which represent revenue recognized but unbilled. The Company’s sales arrangements satisfied over time create contract assets when revenue is recognized as the products are manufactured, as payment is not contractually required until the products have shipped. Contract assets in these arrangements are reclassified to accounts receivable upon shipment. At December 31, 2018 , total opening and closing balances of contract assets were not material. Contract liabilities are comprised of customer payments received or due in advance of the Company’s performance. At December 31, 2018 , total opening and closing balances of deferred revenue were not material. The Company recognizes deferred revenue as net sales after the Company has transferred control of the products to the customer and all revenue recognition criteria is met. For the year ended December 31, 2018 , the total amount of revenue recognized from revenue deferred in prior periods was not material. Additionally, the Company monitors the aging of uncollected billings and adjusts its accounts receivable allowance on a quarterly basis, as necessary, based upon its evaluation of the probability of collection. The adjustments made by the Company due to the write-off of uncollectible amounts have been immaterial for all periods presented. At December 31, 2018 and December 31, 2017 , the Company’s accounts receivable, net of reserves were $108.3 million and $91.8 million , respectively. Practical Expedients The Company elects the practical expedient to expense costs incurred to obtain a contract with a customer when the amortization period would have been one year or less. These costs include sales commissions as the Company has determined annual compensation is commensurate with annual sales activities. The Company elects the practical expedient that does not require the Company to adjust consideration for the effects of a significant financing component when the period between shipment of its products and customer’s payment is one year or less.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions Brink Group Termination On December 13, 2017, the Company entered into a sale and purchase agreement (the “SPA”) to acquire Brink International B.V. and its subsidiaries (collectively, the “Brink Group”). The SPA contemplated a business combination through the purchase of 100% of the equity interest in the Brink Group (the “Brink Group Acquisition”). On the date of the closing of the Brink Group Acquisition, the Brink Group would have become a wholly owned subsidiary of Horizon. On June 14, 2018, the Brink Group Acquisition was terminated by the parties pursuant to the terms of the transaction. On July 16, 2018, in accordance with the termination and settlement agreement, the Company paid the Brink Group a breakup fee of approximately $5.5 million . During the year ended December 31, 2018 , Horizon incurred transaction fees, including related financing costs, of approximately $11.0 million in connection with the pursuit of the Brink Group Acquisition, as well as $5.1 million of costs incurred related to deal financing a ticking fee. The breakup fee and transaction fees are included in selling, general and administrative expenses and the ticking fee is included in other expense, net in the accompanying consolidated statements of operations. There were no transaction fees incurred in connection with the Brink Group Acquisition for the years ended December 31, 2017 or December 31, 2016 . Best Bars Acquisition On July 3, 2017, the Company completed the acquisition of Best Bars Limited (“Best Bars”), within the Horizon Asia-Pacific operating segment, for total consideration of $19.6 million . Best Bars is a provider of towing solutions and automotive accessories to OE and aftermarket customers in New Zealand. The Company believes the acquisition will expand its opportunities for revenue and margin growth, increase its market share and further develop its global OE footprint. The following table summarizes the fair value of consideration paid for Best Bars, and the assets acquired and liabilities assumed: Acquisition Date (dollars in thousands) Consideration Cash paid $ 19,570 Recognized amounts of identifiable assets acquired and liabilities assumed Receivables 2,100 Inventories 2,340 Other intangibles 7,690 Prepaid expenses and other current assets 110 Property and equipment 2,250 Accounts payable and accrued liabilities (1,680 ) Deferred income taxes (2,150 ) Total identifiable net assets 10,660 Goodwill 8,910 $ 19,570

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill Changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 are as follows: Horizon Americas Horizon Europe‑Africa Horizon Asia‑Pacific Total (dollars in thousands) Balances at December 31, 2016 $ 5,370 $ 114,820 $ — $ 120,190 Goodwill from acquisitions (a) — — 6,990 6,990 Foreign currency translation (90 ) 11,340 (240 ) 11,010 Balances at December 31, 2017 5,280 126,160 6,750 138,190 Impairment — (124,660 ) — (124,660 ) Foreign currency translation and other (780 ) (1,500 ) 1,410 (870 ) Balances at December 31, 2018 $ 4,500 $ — $ 8,160 $ 12,660 __________________________ (a) Attributable to the acquisition of Best Bars, as further described in Note 5 , “ Acquisitions ”. The Company performed an annual goodwill impairment test as of October 1, 2017, for which the fair value of all reporting units exceeded their respective carrying value, indicating no impairment. However, during the fourth quarter of 2017, Horizon experienced a significant decline in market capitalization, which, coupled with the Europe-Africa reporting unit’s performance, which were below expectations, formed an indicator of impairment of recorded goodwill. The indicator did not impact the Horizon Americas and Horizon Asia-Pacific reporting units as these reporting units were generating positive cashflows and had a good business outlook. A separate qualitative assessment was completed over these reporting units as part of the Company’s annual October 1, 2017 goodwill test for impairment and it was determined that it was more likely than not that the fair values of the Horizon Americas and Horizon Asia-Pacific reporting units was greater than the carrying values, when considering positive and negative macro and micro factors such as market value, market capitalization and income approach factors (e.g., cash generation, operating results, etc.). However, due to the triggers described above, a quantitative analysis was performed for the Horizon Europe-Africa reporting unit as of December 31, 2017, which indicated that the fair value of the reporting unit exceeded its carrying value by approximately 1% . During the first quarter of 2018, the Company continued to experience a decline in market capitalization. Additionally, the Europe-Africa reporting unit did not perform in-line with forecasted results driven by a shift in volume to lower margin programs as well as increased commodity costs, which negatively impacted margins. As a result, an indicator of impairment was identified during the first quarter of 2018. The Company performed an interim quantitative assessment as of March 31, 2018, utilizing a combination of the income and market approaches, which were weighted evenly. The results of the quantitative analysis performed indicated the carrying value of the reporting unit exceeded the fair value of the reporting unit by $43.4 million , and accordingly an impairment was recorded. Key assumptions used in the analysis were a discount rate of 13.5% , a terminal growth rate of 2.5% and EBITDA margin. Due to the impairment indicators noted above, the Company also performed an interim impairment assessment of indefinite-lived intangible assets in the first quarter of 2018 in the Horizon Europe-Africa operating segment. Based on the results of the analyses, there were certain trade names where the estimated fair values approximated the carrying values. Key assumptions used in the analysis were discount rates of 13.5% to 16.0% and royalty rates ranging from 0.5% to 1.0% . During the second quarter of 2018, the Company continued to experience a decline in market capitalization. Additionally, the Europe-Africa reporting unit did not perform in-line with forecasted results driven by an unfavorable shift in volume to lower margin channels as well as increased commodity costs, which negatively impacted margins. Further, the expected benefits of shifting production to lower cost manufacturing sites had not been realized. As a result, an indicator of impairment was identified during the second quarter of 2018. The Company performed an interim quantitative assessment as of June 30, 2018, utilizing a combination of the income and market approaches. The income approach was weighted 75% , while the market approach was weighted 25% . The results of the quantitative analysis performed indicated the carrying value of the reporting unit exceeded the fair value of the reporting unit by $54.6 million and, accordingly, an impairment was recorded. Key assumptions used in the analysis were a discount rate of 14.0% , a terminal growth rate of 2.5% and EBITDA margin. Due to the impairment indicators noted above, the Company performed an interim impairment assessment for indefinite-lived intangible assets within the Horizon Europe-Africa operating segment, for which the gross carrying amounts totaled approximately $12.1 million as of June 30, 2018. Based on the results of the Company’s analyses, it was determined that the carrying values of the Westfalia and Terwa trade names exceeded their fair values by $1.1 million and, accordingly, an impairment charge was recorded. Key assumptions used in the analysis were discount rates of 15.0% and royalty rates ranging from 0.5% to 1.0% . During the third quarter of 2018, the Europe-Africa reporting unit continued to underperform in relation to forecasted results driven by increased commodity costs and the failure to realize benefits from previously implemented synergy plans. The Company performed an interim quantitative assessment as of August 31, 2018, utilizing a combination of the income and market approaches. The income approach was weighted 75% , while the market approach was weighted 25% . The results of the quantitative analysis performed indicated the carrying value of the reporting unit exceeded fair value and, accordingly, an impairment of $26.6 million was recorded eliminating all remaining goodwill associated with the Europe-Africa reporting unit. Key assumptions used in the analysis were a discount rate of 13.5% , a terminal growth rate of 2.5% and EBITDA margin. Due to impairment indicators noted above, the Company performed an interim impairment assessment for indefinite-lived intangible assets within the Europe-Africa operating segment as of August 31, 2018, for which the gross carrying amounts totaled approximately $10.9 million as of September 30, 2018 . Based on the results of the Company’s analyses, the carrying value of the trademarks approximated fair value. Key assumptions used in the analysis were discount rates of 14.5% , and royalty rates ranging from 0.5% to 1.0% . As of its annual testing date for 2018, the Company no longer had any goodwill recorded for its Horizon Europe-Africa reporting unit due to the interim triggering events discussed above that occurred during the 2018 fiscal year. These triggering events resulted in a goodwill impairment charge of $124.7 million for the year-ended December 31, 2018 . The Company performed an annual qualitative goodwill impairment assessment as of October 1, 2018, for the Horizon Americas and Horizon Asia-Pacific reporting units. The assessment indicated that it was more likely than not that the fair value of each of the reporting units exceeded its respective carrying value. We do not believe that any of our reporting units is at risk for impairment as of December 31, 2018 . Other Intangible Assets The gross carrying amounts and accumulated amortization of the Company’s other intangibles are summarized below. December 31, 2018 December 31, 2017 Intangible Category by Useful Life Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (dollars in thousands) Finite-lived intangible assets: Customer relationships, 5 - 20 years $ 177,910 $ (127,740 ) $ 180,850 $ (121,750 ) Technology and other, 3 - 15 years 21,000 (15,910 ) 19,950 (15,260 ) Trademark/Trade names, 1 - 8 years 730 (250 ) 730 (190 ) Total finite-lived intangible assets 199,640 (143,900 ) 201,530 (137,200 ) Trademark/Trade names, indefinite-lived 22,310 — 25,900 — Total other intangible assets $ 221,950 $ (143,900 ) $ 227,430 $ (137,200 ) Amortization expense related to intangible assets as included in the accompanying consolidated statements of operations is summarized as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Technology and other, included in cost of sales $ 1,840 $ 710 $ 170 Customer relationships & Trademark/Trade names, included in selling, general and administrative expenses 7,100 9,700 7,790 Total amortization expense $ 8,940 $ 10,410 $ 7,960 Estimated amortization expense for the next five fiscal years beginning after December 31, 2018 is as follows: Year ended December 31, Estimated Amortization Expense (dollars in thousands) 2019 $ 8,150 2020 7,890 2021 6,160 2022 5,540 2023 4,970 The Company performed an annual qualitative indefinite-lived impairment assessment as of October 1, 2018. The assessment indicated that it was more likely than not that the fair value of each of the indefinite-lived intangible assets exceeded its respective carrying value. The Company specifically assessed its Terwa trade name during the fourth quarter of 2018 and identified an impairment. The trade name has been written off as of the year-ended December 31, 2018 , resulting in a charge of approximately $1.0 million .

Inventories, Net

Inventories, Net	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventories, Net	Inventories, Net Inventories, net consist of the following components: December 31, December 31, (dollars in thousands) Finished goods $ 112,620 $ 113,740 Work in process 21,470 17,960 Raw materials 55,640 53,950 Total inventories $ 189,730 $ 185,650 Reserves (16,040 ) (14,150 ) Inventories, net $ 173,690 $ 171,500

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, Net Property and equipment, net consists of the following components: December 31, December 31, (dollars in thousands) Land and land improvements $ 460 $ 480 Buildings 21,440 23,370 Machinery and equipment 161,750 162,830 183,650 186,680 Less: Accumulated depreciation 81,370 73,660 Property and equipment, net $ 102,280 $ 113,020 Depreciation expense as included in the accompanying consolidated statements of operations is as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Depreciation expense, included in cost of sales $ 15,110 $ 13,730 $ 8,800 Depreciation expense, included in selling, general and administrative expense 1,330 1,200 1,460 Total depreciation expense $ 16,440 $ 14,930 $ 10,260

Accrued and Other Long-term Lia

Accrued and Other Long-term Liabilities	12 Months Ended
	Dec. 31, 2018
Accrued Liabilities [Abstract]
Accrued and Other Long-term Liabilities	Accrued and Other Long-term Liabilities Accrued liabilities consist of the following components: December 31, December 31, (dollars in thousands) Customer claims 14,160 2,170 Accrued compensation 10,230 10,360 Customer incentives 10,100 8,800 Restructuring 7,530 3,940 Accrued professional services 4,770 4,140 Deferred purchase price 3,400 1,930 Short-term tax liabilities 1,930 7,700 Cross currency swap 1,610 — Other 12,090 14,030 Total accrued liabilities $ 65,820 $ 53,070 Other long-term liabilities consist of the following components: December 31, December 31, (dollars in thousands) Long-term tax liabilities $ 6,270 $ 13,750 Restructuring 2,580 3,100 Deferred purchase price 30 3,350 Cross currency swap — 7,830 Other 11,080 10,340 Total other long-term liabilities $ 19,960 $ 38,370

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt The Company’s long-term debt consists of the following: December 31, December 31, (dollars in thousands) ABL Facility $ 61,570 $ 10,000 Term B Loan 190,520 149,620 Convertible Notes 125,000 125,000 Bank facilities, capital leases and other long-term debt 18,990 25,780 396,080 310,400 Less: Unamortized debt issuance costs and original issuance discount on Term B Loan 7,380 4,940 Unamortized debt issuance costs and discount on the Convertible Notes 24,190 29,870 Current maturities, long-term debt 13,860 16,710 Long-term debt $ 350,650 $ 258,880 Convertible Notes On February 1, 2017, the Company completed a public offering of 2.75% Convertible Senior Notes due 2022 (the “Convertible Notes”) in an aggregate principal amount of $125.0 million . Interest is payable on January 1 and July 1 of each year, beginning on July 1, 2017. The Convertible Notes are convertible into 5,005,000 shares of the Company’s common stock, based on an initial conversion price of $24.98 per share. The Convertible Notes will mature on July 1, 2022 unless earlier converted. The Convertible Notes are convertible at the option of the holder (i) during any calendar quarter beginning after March 31, 2017, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (ii) during the five business days after any five consecutive trading day period in which the trading price per $1,000 principal amount of the Convertible Notes for each trading day of such period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; (iii) upon the occurrence of specified corporate events; and (iv) on or after January 1, 2022 until the close of business on the second scheduled trading day immediately preceding the maturity date. During the fourth quarter of 2018 , no conditions allowing holders of the Convertible Notes to convert have been met. Therefore, the Convertible Notes were not convertible during the fourth quarter of 2018 and are classified as long-term debt. Should conditions allowing holders of the Convertible Notes to convert be met in a future quarter, the Convertible Notes will be convertible at their holders’ option during the immediately following quarter. As of December 31, 2018 , the if-converted value of the Convertible Notes did not exceed the principal value of those Convertible Notes. Upon conversion by the holders, the Company may elect to settle such conversion in shares of its common stock, cash, or a combination thereof. Because the Company may elect to settle conversion in cash, the Company separated the Convertible Notes into their liability and equity components by allocating the issuance proceeds to each of those components in accordance with ASC 470-20, “Debt-Debt with Conversion and Other Options.” The Company first determined the fair value of the liability component by estimating the fair value of a similar liability that does not have an associated equity component. The Company then deducted that amount from the issuance proceeds to arrive at a residual amount, which represents the equity component. The Company accounted for the equity component as a debt discount (with an offset to paid-in capital in excess of par value). The debt discount created by the equity component is being amortized as additional non-cash interest expense using the effective interest method over the contractual term of the Convertible Notes ending on July 1, 2022. The Company allocated offering costs of $3.9 million to the debt and equity components in proportion to the allocation of proceeds to the components, treating them as debt issuance costs and equity issuance costs, respectively. The debt issuance costs of $2.9 million are being amortized as additional non-cash interest expense using the effective interest method over the contractual term of the Convertible Notes. The Company presents debt issuance costs as a direct deduction from the carrying value of the liability component. The carrying value of the liability component at December 31, 2018 and December 31, 2017 , was $100.8 million and $95.1 million , respectively, including total unamortized debt discount and debt issuance costs of $24.2 million and $29.9 million . The $1.0 million portion of offering costs allocated to equity issuance costs was charged to paid-in capital. The carrying amount of the equity component was $20.0 million at December 31, 2018 and December 31, 2017 , respectively, net of issuance costs and taxes. Interest expense recognized relating to the contractual interest coupon, amortization of debt discount and amortization of debt issuance costs on the Convertible Notes included in the accompanying consolidated statements of operations are as follows: Year ended December 31, 2018 2017 (dollars in thousands) Contractual interest coupon on convertible debt $ 3,490 $ 3,190 Amortization of debt issuance costs $ 530 $ 490 Amortization of "equity discount" related to debt $ 5,150 $ 4,380 The estimated fair value of the Convertible Notes based on a market approach as of December 31, 2018 was approximately $68.2 million , which represents a Level 2 valuation. The estimated fair value was determined based on the estimated or actual bids and offers of the Convertible Notes in an over-the-counter market on the last business day of the period. In connection with the issuance of the Convertible Notes, the Company entered into convertible note hedge transactions (the “Convertible Note Hedges”) in privately negotiated transactions with certain of the underwriters or their affiliates (in this capacity, the “option counterparties”). The Convertible Note Hedges provide the Company with the option to acquire, on a net settlement basis, 5,005,000 shares of its common stock, which is equal to the number of shares of common stock that notionally underlie the Convertible Notes, at a strike price of $24.98 , which corresponds to the conversion price of the Convertible Notes. The Convertible Note Hedges have an expiration date that is the same as the maturity date of the Convertible Notes, subject to earlier exercise. The Convertible Note Hedges have customary anti-dilution provisions similar to the Convertible Notes. The Convertible Note Hedges have a default settlement method of net-share settlement but may be settled in cash or shares, depending on the Company’s method of settlement for conversion of the corresponding Convertible Notes. If the Company exercises the Convertible Note Hedges, the shares of common stock it will receive from the option counterparties to the Convertible Note Hedges will cover the shares of common stock that it would be required to deliver to the holders of the converted Convertible Notes in excess of the principal amount thereof. The aggregate cost of the Convertible Note Hedges was $29.0 million (or $7.5 million net of the total proceeds from the Warrants sold, as discussed below), before the allocation of issuance costs of approximately $0.7 million . The Convertible Note Hedges are accounted for as equity transactions in accordance with ASC 815-40 , “ Derivatives and Hedging-Contracts in Entity’s own Equity. ” In connection with the issuance of the Convertible Notes, the Company also sold net-share-settled warrants (the “Warrants”) in privately negotiated transactions with the option counterparties for the purchase of up to 5,005,000 shares of its common stock at a strike price of $29.60 per share, for total proceeds of $21.5 million before the allocation of $0.6 million of issuance costs. The Company also recorded the Warrants within shareholders’ equity in accordance with ASC 815-40. The Warrants have customary anti-dilution provisions similar to the Convertible Notes. As a result of the issuance of the Warrants, the Company will experience dilution to its diluted earnings per share if its average closing stock price exceeds $29.60 for any fiscal quarter. The Warrants expire on various dates from October 2022 through February 2023 and must be net-settled in shares of the Company’s common stock. Therefore, upon exercise of the Warrants, the Company will issue shares of its common stock to the purchasers of the Warrants that represent the value by which the price of the common stock exceeds the strike price stipulated within the particular warrant agreement. ABL Facility On December 22, 2015, the Company entered into an Amended and Restated Loan Agreement among the Company, Horizon Global Americas Inc. (f/k/a Cequent Performance Products, Inc., successor by merger to Cequent Consumer Products, Inc.) (“HGA”), Cequent UK Limited, Cequent Towing Products of Canada Ltd., certain other subsidiaries of the Company party thereto as guarantors, the lenders party thereto and Bank of America, N.A., as agent for the lenders (the “ABL Loan Agreement”), under which the lenders party thereto agreed to provide the Company and certain of its subsidiaries with a committed asset-based revolving credit facility (the “ABL Facility”) providing for revolving loans up to an aggregate principal amount of $99.0 million . The ABL Loan Agreement establishes (i) a U.S. sub-facility, in an aggregate principal amount of up to $94.0 million (subject to availability under a U.S.-specific borrowing base) (the “U.S. Facility”), (ii) a Canadian sub-facility, in an aggregate principal amount of up to $2.0 million (subject to availability under a Canadian-specific borrowing base) (the “Canadian Facility”), and (iii) a U.K. sub-facility in an aggregate principal amount of up to $3.0 million (subject to availability under a U.K.-specific borrowing base) (the “U.K. Facility”). The ABL Facility also includes a $20.0 million U.S. letter of credit sub-facility, which matures on June 30, 2020 . Borrowings under the ABL Facility bear interest, at the Company’s election, at either (i) with respect to the U.S. Facility and the U.K. Facility, (a) the Base Rate (as defined per the ABL Loan Agreement, the “Base Rate”) plus the Applicable Margin (as defined per the ABL Loan Agreement “Applicable Margin”), or (b) the London Interbank Offered Rate (“LIBOR”) plus the Applicable Margin, and (ii) with respect to the Canadian Facility, (a) the Base Rate plus the Applicable Margin, or (b) the Canadian Prime Rate (as defined per the ABL Loan Agreement). The Company incurs fees with respect to the ABL Facility, including (i) an unused line fee of 0.25% times the amount by which the revolver commitments exceed the average daily revolver usage during any month, (ii) facility fees equal to the applicable margin in effect for (a) LIBOR Revolving Loans (as defined per the ABL Loan Agreement), with respect to the U.S. Facility and the U.K. Facility or (b) Canadian Base Rate Loans (as defined per the ABL Loan Agreement), with respect to the Canadian Facility, times the average daily stated amount of letters of credit, (iii) a fronting fee equal to 0.125% per annum on the stated amount of each letter of credit and (iv) customary administrative fees. All of the indebtedness of the U.S. Facility is and will be guaranteed by the Company’s existing and future material domestic subsidiaries and is and will be secured by substantially all of the assets of the Company and such guarantors. In connection with the ABL Loan Agreement, HGA and certain other subsidiaries of the Company party to the ABL Loan Agreement entered into a foreign facility guarantee and collateral agreement (the “Foreign Collateral Agreement”) in order to secure and guarantee the obligation under the Canadian Facility and the U.K. Facility. Under the Foreign Collateral Agreement, HGA and the other subsidiaries of the Company party thereto granted a lien on certain of their assets to Bank of America, N.A., as the agent for the lenders and other secured parties under the Canadian Facility and U.K. Facility. The ABL Loan Agreement contains customary negative covenants and does not include any financial maintenance covenants other than a springing minimum fixed charge coverage ratio of at least 1.00 to 1.00 on a trailing twelve-month basis, which will be tested only upon the occurrence of an event of default or certain other conditions as specified in the agreement. At December 31, 2018 , the Company was in compliance with its financial covenants contained in the ABL Facility. Debt issuance costs of approximately $2.5 million were incurred in connection with the entry into an amendment of the ABL Facility. These debt issuance costs will be amortized into interest expense over the contractual term of the loan. The Company recognized $0.5 million during each of the years ended December 31, 2018 , December 31, 2017 and December 31, 2016 , respectively, related to the amortization of debt issuance costs, which is included in the accompanying consolidated statements of operations. There were $0.8 million and $1.3 million of unamortized debt issuance costs included in other assets in the accompanying consolidated balance sheet as of December 31, 2018 and December 31, 2017 , respectively. There were $61.6 million and $10 million outstanding under the ABL Facility as of December 31, 2018 and December 31, 2017 with a weighted average interest rate of 4.4% and 3.6% , respectively. Total letters of credit issued under the ABL Facility at December 31, 2018 and 2017 were $3.4 million and $6.3 million , respectively. The Company had $10.3 million and $58.5 million in availability under the ABL Facility as of December 31, 2018 and 2017 , respectively. Term Loan On June 30, 2015, the Company entered into a Credit Agreement among the Company, the lenders party thereto and JPMorgan Chase Bank, N.A. (the “Term Loan Agreement”) under which the Company borrowed an aggregate of $200.0 million (“Original Term B Loan”), which matures on June 30, 2021 . On September 19, 2016, the Company entered into the First Amendment to the Credit Agreement (“Term Loan Amendment”), which amended the Original Term B Loan to provide for incremental commitments in an aggregate principal amount of $152.0 million (“2016 Incremental Term Loans”) that were extended to the Company on October 3, 2016. The Original Term B Loan and 2016 Incremental Term Loans are collectively referred to as “Term B Loan”. On March 31, 2017, the Company entered into the 2017 Replacement Term Loan Agreement Amendment (Third Amendment to Credit Agreement) (the “2017 Replacement Term Loan Amendment”); the Term Loan Agreement, as amended by the Term Loan Amendment, the 2017 Replacement Term Loan Amendment and as otherwise amended prior to July 1, 2018, the “Amended Term Loan Agreement”), which replaced the Term B Loan to provide for a new term loan commitment (the “2017 Replacement Term Loan”). The proceeds from the 2017 Replacement Term Loan were used to repay in full the outstanding principal amount of the Term B Loan. As a result of the 2017 Replacement Term Loan Amendment, the interest rate was reduced by 1.5% per annum. The Amended Term Loan Agreement permits the Company to request incremental term loan facilities, subject to certain conditions, in an aggregate principal amount, together with the aggregate principal amount of incremental equivalent debt incurred by the Company, of up to $75.0 million , plus an additional amount such that the Company’s pro forma first lien net leverage ratio (as defined in the term loan agreement) would not exceed 3.50 to 1.00 as a result of the incurrence thereof. Borrowings under the 2017 Replacement Loan bear interest, at the Company’s election, at either (i) the Base Rate plus 3.5% per annum, or (ii) LIBOR, with a 1% floor, plus 4.5% per annum. Principal payments required under the Term B Loan are $2.6 million due each calendar quarter beginning June 2017. During the first quarter of 2017, the Company used a portion of the net proceeds from the Convertible Notes offering as described above, along with proceeds from the Common Stock Offering as described in Note 15 , “Earnings per Share” , to prepay a total of $177.0 million of the Term B Loan. In accordance with ASC 470, “Debt - Modifications and Extinguishments”, the prepayment was determined to be an extinguishment of the existing debt. As a result, the pro-rata share of the unamortized debt issuance costs and original issuance discount related to the prepayment, aggregating to $4.6 million , was recorded as a loss on the extinguishment of debt in the consolidated statements of operations. The remaining unamortized debt issuance costs and original issuance discount, including $2.4 million additional transactions fees incurred in connection to the Replacement Term Loan Amendment, was approximately $6.1 million . Both the aggregate debt issuance costs and the original issue discount will be amortized into interest expense over the remaining life of the Term B Loan. On February 16, 2018, the Company entered into an amendment to the 2017 Replacement Term Loan (the “February 2018 Replacement Term Loan Amendment”), which would have replaced the 2017 Replacement Term Loan to provide for a new term loan commitment in an original aggregate principal amount of $385.0 million (the “2018 Replacement Term Loan”). The proceeds from the 2018 Replacement Term Loan were to be used to (i) repay in full the outstanding principal amount of the existing term loans, (ii) to consummate the acquisition of Brink International B.V. and its subsidiaries (collectively, the “Brink Group”) and pay a portion of the acquisition consideration thereof and the fees and expenses incurred in connection therewith, and (iii) for general corporate purposes. On June 14, 2018, the Company and H2 Equity Partners mutually agreed to terminate the Brink Group acquisition agreement. As part of the termination agreement, the Company agreed to pay a break fee of approximately $5.5 million to H2 Equity Partners and incurred $5.5 million of transaction fees during the year ended December 31, 2018 , which are all included in selling, general and administrative expenses in the consolidated statements of operations. During the year ended December 31, 2018 , the Company incurred $5.1 million of financing costs in connection with the pursuit of the Brink Group acquisition which are included in other expense, net in the consolidated statements of operations. Due to the termination of the Brink Group acquisition, the February 2018 Replacement Term Loan Amendment was not effective. On July 31, 2018, the Company entered into the Fourth Amendment to Credit Agreement (the “Fourth Amendment”; the Amended Term Loan Agreement, as amended by the Fourth Amendment, the “2018 Term Loan Agreement”). The Fourth Amendment provided for additional borrowings of $50.0 million (the “2018 Incremental Term Loan”; the 2017 Replacement Term Loan as increased by the 2018 Incremental Term Loan, the “2018 Term B Loan”) that were used to pay outstanding balances under the ABL Loan Agreement, pay fees and expenses in connection with the amendment and for general corporate purposes. Debt issuance costs of approximately $4.6 million were incurred in connection with the Fourth Amendment. These debt issuance costs will be amortized into interest expense over the contractual term of the loan. Borrowings under the 2018 Term B Loan bear interest, at the Company’s election, at either (i) the Base Rate plus 5.0% per annum, or (ii) LIBOR, with a 1.0% floor, plus 6.0% per annum. Principal payments required under the 2018 Term B Loan are $2.6 million due each calendar quarter beginning September 2018. Under the 2018 Term Loan Agreement, commencing with the fiscal year ended December 31, 2017, and for each fiscal year thereafter, the Company is required to make prepayments of outstanding amounts under the Term B Loan in an amount up to 75.0% of the Company’s excess cash flow for such fiscal year, as defined in the 2018 Term B Loan, subject to adjustments based on the Company’s leverage ratio and optional prepayments of term loans and certain other indebtedness. The Company recognized $2.1 million , $1.6 million and $1.6 million during the years ended December 31, 2018 , December 31, 2017 and December 31, 2016 related to the amortization of debt issuance costs and original issue discount, which is included in the accompanying consolidated statements of operations. The Company had an aggregate principal amount outstanding of $190.5 million and $149.6 million as of December 31, 2018 and 2017 , respectively, under the Amended Term Loan Agreement bearing interest at 8.8% and 6.1% , respectively. The Company had $7.4 million and $4.9 million as of December 31, 2018 and 2017 , respectively, of unamortized debt issuance costs and original issue discount, all of which are recorded as a reduction of the debt balance on the Company’s consolidated balance sheet. The Company’s Term B Loan traded at approximately 92.2% and 101.4% of par value as of December 31, 2018 and December 31, 2017 . The valuation of the Term B Loan was determined based on Level 2 inputs under the fair value hierarchy. All of the indebtedness under the 2018 Term B Loan is and will be guaranteed by the Company’s existing and future material domestic subsidiaries and is and will be secured by substantially all of the assets of the Company and such guarantors. The 2018 Term Loan Agreement contains customary negative covenants, and also contains a financial maintenance covenant which requires the Company to maintain a net leverage ratio, as defined in the agreement, not exceeding 7.00 to 1.00 on the last day of each fiscal quarter commencing with the fiscal quarter ending on June 30, 2018 and ending, and including, the fiscal quarter ending on December 31, 2018; 6.50 to 1.00 on the last day of the fiscal quarter ending March 31, 2019; 5.00 to 1.00 on the last day of the fiscal quarter ending June 30, 2019; 4.75 to 1.00 on the last day of the fiscal quarter ending September 30, 2019; and 4.50 to 1.00 on the last day of each fiscal quarter thereafter. Covenant and Liquidity Matters Refer to Note 22, “ Subsequent Events,” for additional information on the Company’s ABL Facility, Term Loan and debt facilities and related covenants. Bank facilities On July 3, 2017, the Company’s Australian subsidiaries entered into an agreement (collectively, the “Australia Loans”) to provide for revolving borrowings. The Australia Loans included two sub-facilities: (i) Facility A , with a borrowing capacity of $18.3 million that matures on July 3, 2020 and (ii) Facility B , which was canceled on November 1, 2018. There were $2.9 million and $6.6 million outstanding under the Australian Loan as of December 31, 2018 and 2017, respectively. Borrowings under Facility A bear interest at the Bank Bill Swap Bid Rate (“BBSY”) plus a margin determined based on the most recent net leverage ratio (as defined per the Australian credit agreement). The margin is to be determined on the first day of the period as follows: (i) 1.10% per annum if the net leverage ratio is less than 1.50 to 1.00; (ii) 1.20% per annum if the net leverage ratio is less than 2.00 to 1.00 and (iii) 1.30% if the net leverage ratio is less than 2.50 to 1.00. Borrowings under Facility B bore interest at the BBSY plus a margin of 0.9% per annum. The Australian Loans contain financial covenants, which require the Company’s Australian subsidiaries to maintain: (i) a net leverage ratio as defined not exceeding 2.50 to 1.00 during the period commencing on the date of the agreement and ending on the first anniversary of the date of the agreement; and 2.00 to 1.00 thereafter; (ii) a working capital coverage ratio (as defined per the Australian credit agreement) greater than 1.75 to 1.00 at all times; and (iii) a gearing ratio (defined as the ratio of senior debt to senior debt plus equity) not to exceed 50% . At December 31, 2018 , the Company was in compliance with its financial covenants under the Australian Loans. Long-term Debt Maturities Future maturities of the face value of long-term debt at December 31, 2018 are as follows: Years ending December 31, Future maturities of long-term debt (dollars in thousands) 2019 $ 13,860 2020 76,890 2021 170,000 2022 125,000 2023 — Thereafter 10,330 Total $ 396,080

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments Foreign Currency Exchange Rate Risk As of December 31, 2018 , the Company was party to forward contracts to hedge changes in foreign currency exchange rates with notional amounts of approximately $23.8 million . The Company uses foreign currency forward contracts to mitigate the risk associated with fluctuations in currency rates impacting cash flows related to certain payments for contract manufacturing in its lower-cost manufacturing facilities. The foreign currency forward contracts hedge currency exposure between the Mexican peso and the U.S. dollar and between the Australian dollar and the U.S. dollar and mature at specified monthly settlement dates through December 2019. At inception, the Company designated the foreign currency forward contracts as cash flow hedges. Upon the performance of contract manufacturing or purchase of certain inventories the Company de-designates the foreign currency forward contract. On October 4, 2016, the Company entered into a cross currency swap arrangement to hedge changes in foreign currency exchange rates. As of December 31, 2018 , the notional amount of the cross currency swap was approximately $110.0 million . The Company uses the cross currency swap to mitigate the risk associated with fluctuations in currency rates impacting cash flows related to a non-functional currency intercompany loan of €110.0 million . The cross currency swap hedged currency exposure between the euro and the U.S. dollar and matured on January 3, 2019 with a liability of $2.5 million . The company entered into forward contracts to settle the cross currency swap which resulted in a $0.9 million offset to the liability. These settlements resulted in a net realized gain reclassified from accumulated other comprehensive income (loss) (“AOCI”) of $0.6 million . The Company made quarterly principal payments of €1.4 million , plus interest at a fixed rate of 5.4% per annum, in exchange for $1.5 million , plus interest at a fixed rate of 7.2% per annum. At inception, the Company designated the cross currency swap as a cash flow hedge. Changes in the currency rate resulted in reclassification of amounts from accumulated other comprehensive income (loss) to earnings to offset the re-measurement gain or loss on the non-U.S. denominated intercompany loan. On August 16, 2017, the Company’s Australian subsidiary entered into a cross currency swap arrangement to hedge changes in foreign currency exchange rates. As of December 31, 2018 , the notional amount of the cross currency was approximately $3.4 million . The Australian subsidiary uses the cross currency swap to mitigate the risk associated with fluctuations in currency rates related to a non-U.S. functional currency intercompany loan of NZ $10.0 million . The floating-to-floating cross currency swap hedges currency exposure between the New Zealand dollar and the Australian dollar and matures on June 30, 2020. The Australian subsidiary makes quarterly principal payments of NZ $0.8 million , plus interest at the 3-month Bank Bill Benchmark Rate in New Zealand plus a margin of 0.3% per annum, in exchange for A $0.8 million , plus interest at the 3-month BBSY in Australia per annum. At inception, the cross currency swap was not designated as a hedging instrument. Financial Statement Presentation The fair value carrying amount of the Company’s derivative instruments were recorded as follows: Asset / (Liability) Derivatives Balance Sheet Caption December 31, 2018 December 31, 2017 (dollars in thousands) Derivatives designated as hedging instruments Foreign currency forward contracts Prepaid expenses and other current assets $ 1,910 $ — Foreign currency forward contracts Accrued liabilities — (670 ) Cross currency swap Accrued Liabilities (2,480 ) — Cross currency swap Other long-term liabilities — (7,830 ) Total derivatives designated as hedging instruments (570 ) (8,500 ) Derivatives not designated as hedging instruments Foreign currency forward contracts Prepaid expenses and other current assets 290 110 Foreign currency forward contracts Accrued liabilities — (90 ) Cross currency swap Other assets — 90 Cross currency swap Accrued liabilities (90 ) — Total derivatives de-designated as hedging instruments 200 110 Total derivatives $ (370 ) $ (8,390 ) The following table summarizes the gain or loss recognized in AOCI and the amounts reclassified from AOCI into earnings and the amounts recognized directly into earnings: Amount of Gain (Loss) Location of Gain (Loss) Reclassified from AOCI into Earnings Amount of Gain (Loss) Reclassified from December 31, Year ended December 31, 2018 2017 2018 2017 2016 (dollars in thousands) (dollars in thousands) Derivative instruments Foreign currency forward contracts $ 1,870 $ (580 ) Cost of sales $ 1,070 $ 940 $ (1,620 ) Cross currency swap $ 90 $ 270 Other expense, net $ 5,330 $ (15,820 ) $ 7,510 Over the next 12 months, the Company expects to reclassify approximately $2.0 million of pre-tax deferred gains, related to the foreign currency forward contracts, from AOCI to cost of sales as the contract manufacturing and inventory purchases are settled. Over the next 12 months, the Company expects to reclassify approximately $0.1 million of pre-tax deferred gains, related to the cross currency swap, from AOCI to other expense, net as an offset to the re-measurement gains or losses on the non-U.S. denominated intercompany loan. Derivatives not designated as hedging instruments The gain or loss resulting from the change in fair value on de-designated forward contracts is reported within cost of sales on the Company’s consolidated statements of operations. There was a $0.3 million loss on de-designated derivatives for the year ended December 31, 2018 . There was no gain or loss on de-designated derivatives for the year ended December 31, 2017 , and a $0.3 million gain for the year ended December 31, 2016 . The gain or loss resulting from the change in fair value on the floating-to-floating cross currency swap is recorded within other expense, net on the Company’s consolidated statements of operations. The loss on this cross currency swap was $0.2 million for the year ended December 31, 2018 . During May 2018, the Company entered into foreign currency option contracts known as zero-cost collars with an aggregate notional amount of €63.4 million to hedge changes in foreign currency related to the cash portion of the purchase price of the pending acquisition of the Brink Group; the acquisition was later terminated as described in Note 10 “Long-term Debt.” During June 2018, these zero-cost collar arrangements matured, resulting in a loss of $1.2 million which is included within other expense, net in the Company’s consolidated statements of operations for the year ended December 31, 2018 . Fair Value Measurements The fair value of the Company’s derivatives are estimated using an income approach based on valuation techniques to convert future amounts to a single, discounted amount. The Company’s derivatives are recorded at fair value in its consolidated balance sheets and are valued using pricing models that are primarily based on market observable external inputs, including spot and forward currency exchange rates, benchmark interest rates, and discount rates consistent with the instrument’s tenor, and consider the impact of the Company’s own credit risk, if any. Changes in counterparty credit risk are also considered in the valuation of derivative financial instruments. Fair value measurements and the fair value hierarchy level for the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and December 31, 2017 are shown below: Frequency Asset / (Liability) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) December 31, 2018 Foreign currency forward contracts Recurring $ 2,200 $ — $ 2,200 $ — Cross currency swaps Recurring $ (2,570 ) $ — $ (2,570 ) $ — December 31, 2017 Foreign currency forward contracts Recurring $ (650 ) $ — $ (650 ) $ — Cross currency swap Recurring $ (7,740 ) $ — $ (7,740 ) $ —

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring The Company’s restructuring activities are undertaken as necessary to execute management’s strategy and streamline operations, consolidate and take advantage of available capacity and resources, and ultimately achieve productivity improvements and net cost reductions. The Company's restructuring charges consist primarily of employee costs (principally severance and/or termination benefits) and facility closure and other costs. To the extent these programs involve voluntary separations, no liabilities are generally recorded until offers to employees are accepted. If employees are involuntarily terminated, a liability is generally recorded at the communication date. Estimates of restructuring charges are based on information available at the time such charges are recorded. Related charges are recorded in cost of sales and selling, general and administrative expenses. The following table provides a summary of the Company’s consolidated restructuring liabilities and related activity for each type of exit cost as of and for the years ended December 31, 2018: Employee Costs Facility Closure and Other Costs Total (dollars in thousands) Balances at December 31, 2017 1,850 5,190 7,040 Restructuring charges 10,440 2,680 13,120 Payments and other (1) (7,300 ) (2,750 ) (10,050 ) Balances at December 31, 2018 $ 4,990 $ 5,120 $ 10,110 (1) Other consists of changes in the liability balance due to foreign currency translation. The $10.1 million restructuring liability at December 31, 2018 includes $7.5 million of accrued liabilities and $2.6 million of other long-term liabilities. Restructuring expenses for the year ended December 31, 2018 primarily relate to the Americas aimed at reducing inefficiencies in indirect and fixed costs structure, coupled with the restructuring of certain of the executive management team including separation of the former CEO. In the first quarter of 2018, the Company announced plans to close its facility in Solon, Ohio along with an engineering center in Mosinee, Wisconsin. The activities at these locations have been consolidated and moved to the headquarters of the Horizon Americas segment, located in Plymouth, Michigan. During the second quarter of 2018, the Company finalized workforce consolidation plans related to the facility closures, as well as the corporate severance costs resulting from the management restructuring. We completed these programs in 2018. Restructuring expenses incurred prior to December 31, 2017 primarily relate to America locations aimed at reducing production complexities and streamlining manufacturing operations and were completed by December 31, 2017.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Commitments	13. Commitments The Company leases certain equipment and facilities under non-cancellable operating leases. Rental expense for the Company totaled approximately $21.8 million in 2018 , $20.0 million in 2017 and $16.8 million in 2016 . Minimum payments for operating leases having initial or remaining non-cancellable lease terms in excess of one year at December 31, 2018 are summarized below (in thousands): December 31, Minimum payments (dollars in thousands) 2019 $ 15,820 2020 14,790 2021 12,590 2022 7,900 2023 4,830 Thereafter 13,090 Total $ 69,020

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies During the fourth quarter of 2018, the Company was notified by two OEM customers of potential claims related to product sold by Horizon Europe-Africa arising from potentially faulty components provided by a supplier. The claims resulted from the failure of products not functioning to specifications, but the claims do not allege any damage and only seek replacement of the product. One of the claims has since resulted in a recall campaign while the manner in which the other claim will be resolved is pending. The Company performed an assessment of the facts and circumstances for all asserted and unasserted claims and considered all factors including the Company’s recall insurance. Based on this assessment, the Company determined the probable range of the liability to be between $12.3 million and $20.0 million , with no amount within that range a better estimate than any other amount. As a result, the Company recorded a liability of $12.3 million and an asset of $10.8 million as of December 31, 2018. The asset recorded represents the amount the Company believes is probable of recovery and has appropriate legal basis for recovery in accordance with its recall insurance policy. The Company cannot give any assurances that the final resolution of the claims, if adverse to the Company, will not have a material adverse effect to our financial position, results of operations or cash flows.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) per Share Basic earnings (loss) per share is computed using net income (loss) attributable to Horizon Global and the number of weighted average shares outstanding. Diluted earnings (loss) per share is computed using net income (loss) attributable to Horizon Global and the number of weighted average shares outstanding, adjusted to give effect to the assumed exercise of outstanding stock options and warrants, vesting of restricted shares outstanding, and conversion of the Convertible Notes. The following table sets forth the reconciliation of the numerator and the denominator of basic loss per share attributable to Horizon Global and diluted loss per share attributable to Horizon Global: Year Ended December 31, 2018 2017 2016 (dollars in thousands, except for per share amounts) Numerator: Net loss attributable to Horizon Global $ (203,960 ) $ (3,550 ) $ (12,360 ) Denominator: Weighted average shares outstanding, basic 25,053,013 24,781,349 18,775,500 Dilutive effect of stock-based awards — — — Weighted average shares outstanding, diluted 25,053,013 24,781,349 18,775,500 Basic loss per share attributable to Horizon Global $ (8.14 ) $ (0.14 ) $ (0.66 ) Diluted loss per share attributable to Horizon Global $ (8.14 ) $ (0.14 ) $ (0.66 ) Due to net losses for the years ended December 31, 2018 , 2017 and 2016 , the effect of certain dilutive securities were excluded from the computation of weighted average diluted shares outstanding, as inclusion would have resulted in anti-dilution. A summary of these anti-dilutive common stock equivalents is provided in the table below: Year Ended December 31, 2018 2017 2016 Number of options 240,647 343,782 331,485 Exercise price of options $9.20 - $11.29 $9.20 - $11.29 $9.20 - $11.29 Restricted stock units 646,336 584,335 526,751 Convertible Notes 5,005,000 4,566,205 — Warrants 5,005,000 4,566,205 — For purposes of determining diluted loss per share, the Company has elected a policy to assume that the principal portion of the Convertible Notes, as described in Note 10 , “ Long-term Debt ,” is settled in cash and the conversion premium is settled in shares. Therefore, the Company has adopted a policy of calculating the diluted loss per share effect of the Convertible Notes using the treasury stock method. As a result, the dilutive effect of the Convertible Notes is limited to the conversion premium, which is reflected in the calculation of diluted earnings loss per share as if it were a freestanding written call option on the Company’s shares. Using the treasury stock method, the Warrants issued in connection with the issuance of the Convertible Notes are considered to be dilutive when they are in the money relative to the Company’s average common stock price during the period. The Convertible Note Hedges purchased in connection with the issuance of the Convertible Notes are always considered to be anti-dilutive and therefore do not impact the Company’s calculation of diluted loss per share. On February 1, 2017, the Company completed an underwritten public offering of 4.6 million shares of common stock, which includes the exercise in full by the underwriters of their option to purchase 0.6 million shares of common stock, at a public offering price of $18.50 per share (the “Common Stock Offering”). Proceeds from the Common Stock Offering were approximately $79.9 million , net of underwriting discounts, commissions, and offering-related transaction costs.

Equity Awards

Equity Awards	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Awards	Equity Awards Description of the Plan Horizon employees and non-employee directors participate in the Horizon Global Corporation 2015 Equity and Incentive Compensation Plan (as amended and restated, the “Horizon 2015 Plan”). The Horizon 2015 Plan authorizes the Compensation Committee of the Horizon Board of Directors to grant stock options (including “incentive stock options” as defined in Section 422 of the U.S. Internal Revenue Code), restricted shares, restricted stock units, performance shares, performance stock units, cash incentive awards, and certain other awards based on or related to our common stock to Horizon employees and non-employee directors. No more than 4.4 million Horizon common shares may be delivered under the Horizon 2015 Plan. Stock Options The following table summarizes Horizon stock option activity from December 31, 2017 to December 31, 2018 : Number of Stock Options Weighted Average Exercise Price Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Outstanding at December 31, 2017 338,349 $ 10.38 — — Granted — — — — Exercised — — — — Canceled, forfeited (245,382 ) 10.37 — — Expired — — — — Outstanding at December 31, 2018 92,967 $ 10.40 4.6 $ — As of December 31, 2018 , the unrecognized compensation cost related to stock options is immaterial. For the year ended December 31, 2018 , the stock-based compensation expense recognized by the Company related to stock options was immaterial. The Company recognized approximately $0.3 million and $0.8 million of stock-based compensation expense related to stock options for the years ended December 31, 2017 and 2016 , respectively. There was no aggregate intrinsic value on the outstanding options at December 31, 2018 . Stock-based compensation expense is included in selling, general and administrative expenses in the accompanying consolidated statements of operations. Restricted Shares During 2018 , the Company granted an aggregate of 477,963 restricted stock units and performance stock units to certain key employees and non-employee directors. The total grants consisted of: (i) 5,680 time-based restricted stock units that vested on July 1, 2018; (ii) 43,799 time-based restricted stock units that vest ratably on (1) March 1, 2019, (2) March 1, 2020 and (3) March 1, 2021; (iii) 101,204 time-based restricted stock units that vest ratably on (1) March 1, 2019, (2) March 1, 2020, (3) March 1, 2021 and (4) March 1, 2022; (iv) 145,003 market-based performance stock units that vest on March 1, 2021; (v) 43,416 time-based restricted stock units that vest on March 1, 2021; (vi) 17,575 time-based restricted stock units that vest on May 8, 2019; (vii) 84,210 time-based restricted stock units that vest on May 15, 2018; (viii) 11,404 time-based restricted stock units that vest on May 15, 2020; (ix) 14,472 time-based restricted stock units that vest on August 1, 2020; (x) 8,400 time-based restricted stock units that vest on October 1, 2020; and (xi) 2,800 time-based restricted stock units that vest on December 3, 2020. During 2017, the Company granted an aggregate of 185,423 restricted stock units and performance stock units to certain key employees and non-employee directors. The total grants consisted of: (i) 22,449 time-based restricted stock units that vest ratably on (1) March 1, 2018, (2) March 1, 2019 and (3) March 1, 2020; (ii) 50,416 time-based restricted stock units that vest ratably on (1) March 1, 2018, (2) March 1, 2019, (3) March 1, 2020 and (4) March 1, 2021; (iii) 72,865 market-based performance stock units that vest on March 1, 2020 (the “2017 PSUs”); (iv) 33,426 time-based restricted stock units that vest on July 1, 2018, and (v) 6,267 time-based restricted stock units that vest on July 1, 2019. The performance criteria for the market-based performance stock units is based on the Company’s total shareholder return (“TSR”) relative to the TSR of the common stock of a pre-defined industry peer group. For the 2018 PSUs, TSR is measured over a period beginning January 1, 2018 and ending December 31, 2020. For the 2017 PSUs, TSR is measured over a period beginning January 1, 2017 and ending December 31, 2019. TSR is calculated as the Company’s average closing stock price for the 20 -trading days at the end of the performance period plus Company dividends, divided by the Company’s average closing stock price for the 20 -trading days prior to the start of the performance period. Depending on the performance achieved, the amount of shares earned can vary from 0% of the target award to a maximum of 200% of the target award. The Company estimated the grant-date fair value of the awards subject to a market condition using a Monte Carlo simulation model, using the following weighted-average assumptions: risk-free interest rate of 2.34% and 1.52% for the 2018 PSUs and 2017 PSUs, respectively, and annualized volatility of 37.4% and 38.5% for the 2018 PSUs and 2017 PSUs, respectively. Due to the lack of adequate stock price history of Horizon common stock, the volatility is based on the median of the peer group. The grant date fair value of the performance stock units were $7.08 and $18.41 for the 2018 PSUs and 2017 PSUs, respectively. The grant date fair value of restricted stock units is expensed over the vesting period. Restricted stock unit fair values are based on the closing trading price of the Company’s common stock on the date of grant. Changes in the number of restricted stock units outstanding for the year ended December 31, 2018 were as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2017 582,611 $ 13.51 Granted 477,963 7.43 Vested (331,456 ) 11.67 Canceled, forfeited (309,190 ) 11.12 Outstanding at December 31, 2018 419,928 $ 9.75 As of December 31, 2018 , there was $1.6 million in unrecognized compensation costs related to unvested restricted stock units that is expected to be recognized over a weighted average period of 1.8 years. The Company recognized approximately $1.6 million , $3.3 million and $3.0 million of stock-based compensation expense related to restricted shares during the years ended December 31, 2018 , 2017 and 2016 , respectively. Stock-based compensation expense is included in selling, general and administrative expenses in the accompanying consolidated statements of operations.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2018
Other Comprehensive Income [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock The Company is authorized to issue 100,000,000 shares of Horizon Global preferred stock, par value of $0.01 per share. There were no preferred shares outstanding at December 31, 2018 or December 31, 2017 . Common Stock The Company is authorized to issue 400,000,000 shares of Horizon Global common stock, par value of $0.01 per share. At December 31, 2018 , there were 25,866,747 shares of common stock issued and 25,180,241 shares of common stock outstanding. At December 31, 2017 , there were 25,625,571 shares of common stock issued and 24,939,065 outstanding. Share Repurchase Program In April 2017, the Board of Directors authorized a share repurchase program of up to 1.5 million shares of the Company’s issued and outstanding common stock during the period beginning on May 5, 2017 and ending May 5, 2020 (the “Share Repurchase Program”). The Share Repurchase Program provides for share purchases in the open market or otherwise, depending on share price, market conditions and other factors, as determined by the Company. In addition, the Company’s ABL Loan Agreement and Term B Loan place certain limitations on the Company’s ability to repurchase its common stock. As of December 31, 2018 , cumulative shares purchased totaled 686,506 at an average purchase price per share of $14.55 , excluding commissions. The repurchased shares are presented as treasury stock, at cost, on the consolidated balance sheets. Changes in AOCI attributable to Horizon Global by component, net of tax, for the years ended December 31, 2018 , 2017 , and 2016 are summarized as follows: Derivative Instruments Foreign Currency Translation and Other Total (dollars in thousands) Balances at January 1, 2016 $ (710 ) $ 3,180 $ 2,470 Net unrealized losses arising during the period (a) 3,170 (10,590 ) (7,420 ) Less: Net realized losses reclassified to net income (b) 3,390 — 3,390 Net current-period change (220 ) (10,590 ) (10,810 ) Balances at December 31, 2016 (930 ) (7,410 ) (8,340 ) Net unrealized gains (losses) arising during the period (a) (8,810 ) 17,810 9,000 Less: Net realized gains reclassified to net income (b) (9,350 ) — (9,350 ) Net current-period change 540 17,810 18,350 Balances at December 31, 2017 (390 ) 10,400 10,010 Impact of ASU 2018-02 80 480 560 Balances at December 31, 2017, as restated (310 ) 10,880 10,570 Net unrealized gains (losses) arising during the period (a) 7,440 (5,080 ) 2,360 Less: Net realized losses reclassified to net income (b) 5,170 — 5,170 Net current-period change 2,270 (5,080 ) (2,810 ) Balances at December 31, 2018 $ 1,960 $ 5,800 $ 7,760 __________________________ (a) Derivative instruments, net of income tax benefit (expense) of $(1.4) million , $5.2 million , and $(2.5) million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. See Note 11 , “ Derivative Instruments ,” for further details. (b) Derivative instruments, net of income tax benefit (expense) of $1.3 million , $5.5 million , and $(2.5) million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. See Note 11 , “ Derivative Instruments ,” for further details.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Information	Segment Information The Company groups its business into operating segments by the region in which sales and manufacturing efforts are focused, which are grouped on the basis of similar product, market and operating factors. Each operating segment has discrete financial information evaluated regularly by the Company’s chief operating decision maker in determining resource allocation and assessing performance. The Company reports the results of its business in three operating segments: Horizon Americas , Horizon Europe‑Africa , and Horizon Asia‑Pacific . Horizon Americas is comprised of the Company’s North American and South American operations. Horizon Europe‑Africa is comprised of the European and South African operations, while Horizon Asia‑Pacific is comprised of the Australia, Thailand, and New Zealand operations. See below for further information regarding the types of products and services provided within each operating segment. Horizon Americas - A market leader in the design, manufacture and distribution of a wide variety of high-quality, custom engineered towing, trailering and cargo management products and related accessories. These products are designed to support OEMs, OESs, aftermarket and retail customers in the agricultural, automotive, construction, industrial, marine, military, recreational vehicle, trailer and utility end markets. Products include brake controllers, cargo management, heavy-duty towing products, jacks and couplers, protection/securing systems, trailer structural and electrical components, tow bars, vehicle roof racks, vehicle trailer hitches and additional accessories. Horizon Europe‑Africa - With a product offering similar to Horizon Americas , Horizon Europe‑Africa focuses its sales and manufacturing efforts in the Europe and Africa regions of the world. Horizon Asia‑Pacific - With a product offering similar to Horizon Americas , Horizon Asia‑Pacific focuses its sales and manufacturing efforts in the Asia-Pacific region of the world. Segment activity is as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Net Sales Horizon Americas $ 390,690 $ 439,700 $ 443,240 Horizon Europe‑Africa 323,260 325,970 104,080 Horizon Asia‑Pacific 136,000 127,310 101,880 Total $ 849,950 $ 892,980 $ 649,200 Operating Profit (Loss) Horizon Americas $ (6,850 ) $ 44,060 $ 38,680 Horizon Europe‑Africa (148,630 ) (1,790 ) (13,320 ) Horizon Asia‑Pacific 20,250 18,740 11,230 Corporate (35,160 ) (26,250 ) (30,290 ) Total $ (170,390 ) $ 34,760 $ 6,300 Capital Expenditures Horizon Americas $ 6,760 $ 10,150 $ 5,550 Horizon Europe‑Africa 4,500 13,190 4,670 Horizon Asia‑Pacific 2,610 2,440 3,310 Corporate — 1,510 1,010 Total $ 13,870 $ 27,290 $ 14,540 Depreciation and Amortization Horizon Americas $ 8,160 $ 10,660 $ 10,750 Horizon Europe‑Africa 12,090 10,110 3,290 Horizon Asia‑Pacific 4,800 4,310 4,090 Corporate 330 260 90 Total $ 25,380 $ 25,340 $ 18,220 December 31, 2018 2017 (dollars in thousands) Total Assets Horizon Americas $ 219,680 $ 209,210 Horizon Europe - Africa 173,980 341,750 Horizon Asia‑Pacific 119,590 88,210 Corporate 8,100 21,860 Total $ 521,350 $ 661,030 The following tables present the Company’s net sales and net fixed assets attributed to each subsidiary’s continent of domicile: Year ended December 31, 2018 2017 2016 (dollars in thousands) Net Sales Total U.S. $ 380,480 $ 423,090 $ 428,770 Non-U.S. Australia 69,440 69,760 60,020 Germany 186,430 194,120 52,350 Other Europe 117,960 114,940 39,520 Asia 67,420 58,140 41,940 Africa 19,880 16,320 12,130 Other Americas 8,340 16,610 14,470 Total non-U.S. 469,470 469,890 220,430 Total $ 849,950 $ 892,980 $ 649,200 December 31, 2018 2017 (dollars in thousands) Property and equipment, net Total U.S. $ 26,560 $ 5,770 Non-U.S. Australia 8,480 10,730 Germany 43,010 48,400 United Kingdom 620 22,920 Other Europe 8,820 9,830 Asia 7,370 7,720 Africa 5,320 5,260 Other Americas 2,100 2,390 Total non-U.S. 75,720 107,250 Total $ 102,280 $ 113,020 The Company’s export sales from the U.S. approximated $44.3 million , $34.6 million and $32.6 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The following table presents the Company’s net sales contributed by product group: Year ended December 31, 2018 2017 2016 Towing 68.5 % 70.3 % 62.7 % Trailering 16.1 % 16.8 % 21.5 % Cargo Management 6.2 % 6.3 % 8.9 % Other 9.2 % 6.6 % 6.9 % 100.0 % 100.0 % 100.0 %

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s income (loss) before income tax, by tax jurisdiction, consisted of the following: Year ended December 31, 2018 2017 2016 (dollars in thousands) Domestic $ (43,200 ) $ (3,880 ) $ (14,630 ) Foreign (168,060 ) 8,860 (1,760 ) Income (loss) before income tax $ (211,260 ) $ 4,980 $ (16,390 ) The income tax benefit (expense) is comprised of: Year ended December 31, 2018 2017 2016 (dollars in thousands) Current income tax benefit (expense): Federal $ 10,070 $ (7,680 ) $ (1,170 ) State and local (190 ) (240 ) (970 ) Foreign (7,880 ) (2,190 ) (2,560 ) Total current income tax expense 2,000 (10,110 ) (4,700 ) Deferred income tax benefit (expense): Federal (1,870 ) (3,000 ) 3,800 State and local 160 (390 ) 450 Foreign 6,070 3,750 4,180 Total deferred income tax benefit 4,360 360 8,430 Income tax benefit (expense) $ 6,360 $ (9,750 ) $ 3,730 The components of deferred taxes are as follows: December 31, 2018 2017 (dollars in thousands) Deferred tax assets: Receivables, net $ 980 $ 460 Inventories 3,610 3,280 Accrued liabilities and other long-term liabilities 10,410 10,600 Tax loss and credit carryforwards 26,720 12,930 Gross deferred tax asset 41,720 27,270 Valuation allowances (26,650 ) (10,560 ) Net deferred tax asset 15,070 16,710 Deferred tax liabilities: Property and equipment, net (5,470 ) (4,300 ) Intangibles, net (18,670 ) (19,710 ) Other (2,390 ) (3,280 ) Gross deferred tax liability (26,530 ) (27,290 ) Net deferred tax liability $ (11,460 ) $ (10,580 ) ASC 740 “ Income Taxes ” requires that companies assess whether a valuation allowance should be established based on the consideration of all available evidence using a “more likely than not” standard. In making such judgments, significant weight is given to evidence that can be objectively verified. A cumulative loss in recent years is significant negative evidence in considering whether deferred tax assets are realizable and also restricts the amount of reliance that can be placed on projections of future taxable income to support the recovery of deferred tax assets. Given the recent decline in U.S. gross profit the Company is in a three-year cumulative pre-tax loss position. Therefore, during the fourth quarter of 2018 , the Company recorded a valuation allowance of $8.8 million against its U.S. deferred tax assets. In addition, due to certain foreign jurisdictions being in three-year cumulative pre-tax loss position, the Company also recorded valuation allowance of $5.7 million against certain of its deferred tax assets. The ultimate realization of these deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Changes in existing tax laws could also affect actual tax results and the valuation of deferred tax assets over time. The accounting for deferred taxes is based upon an estimate of future results. Differences between the anticipated and actual outcomes of these future tax consequences could have a material impact on the Company’s consolidated results of operations or financial position. The following is a reconciliation of our provision for income taxes to income tax benefit (expense) computed at the U.S. federal statutory rate: Year ended December 31, 2018 2017 2016 (dollars in thousands) U.S. federal statutory rate 21 % 35 % 35 % Tax at U.S. federal statutory rate $ 44,360 $ (1,740 ) $ 5,730 State and local taxes, net of federal tax benefit 1,500 (340 ) (340 ) Differences in statutory foreign tax rates 13,180 3,680 1,230 Uncertain tax positions 2,680 3,950 1,260 Tax holiday (1) — 950 460 Withholding taxes (990 ) (300 ) (300 ) Tax credits 3,980 590 (70 ) Net change in valuation allowance (19,210 ) (3,020 ) (1,600 ) Transaction costs — (1,610 ) (2,670 ) Tax reform/SAB 118 true-up (2,280 ) (11,850 ) — Goodwill (36,580 ) — — Other, net (280 ) (60 ) 30 Income tax benefit (expense) $ 6,360 $ (9,750 ) $ 3,730 __________________________ (1) Tax holiday related to Thailand which expired on December 31, 2017. The Company has recorded deferred tax assets on $23.2 million of various state operating loss carryforwards and $75.4 million of various foreign operating loss carryforwards. The majority of the state tax loss carryforwards expire between 2030 - 2038 and the majority of foreign losses have indefinite carryforward periods. No deferred taxes have been provided for taxes that would result upon repatriation of our foreign investments to the U.S. as it is the practice and intention of the Company to reinvest the earnings of its non-U.S. subsidiaries in those operations or should not give rise to additional income tax liabilities as a result of the distribution of such earnings. Uncertain Tax Positions The Company has approximately $5.7 million and $7.3 million of uncertain tax positions (“UTPs”) as of December 31, 2018 and 2017 , respectively. If the UTPs were recognized, the impact to the Company’s effective tax rate would be to reduce reported income tax expense for the years ended December 31, 2018 and 2017 approximately $5.7 million and $7.3 million , respectively. A reconciliation of the change in the UTPs and related accrued interest and penalties for the years ended December 31, 2018 and 2017 is as follows: Uncertain Tax Positions (dollars in thousands) Balance at December 31, 2016 $ 8,850 Tax positions related to current year: Additions — Reductions — Tax positions related to prior years: Additions 50 Reductions (30 ) Lapses in the statutes of limitations (2,110 ) Cumulative Translation Adjustment 550 Balance at December 31, 2017 $ 7,310 Tax positions related to current year: Additions — Reductions — Tax positions related to prior years: Additions 270 Reductions — Settlements — Lapses in the statutes of limitations (1,580 ) Cumulative Translation Adjustment (340 ) Balance at December 31, 2018 $ 5,660 The Company recognizes interest accrued related to UTPs and penalties as income tax expense. Related to the UTPs noted above, the Company has a current benefit of $1.4 million related to interest and penalties incurred during 2018 , and recognized a liability for interest and penalties of $1.4 million as of December 31, 2018 . During 2017 , the Company had accrued penalties and interest of $2.1 million and recognized a liability for interest and penalties of $3.4 million . The decrease in UTPs and liabilities for interest and penalties for tax positions related to prior years is primarily related to the roll-off of certain statutes of limitations and changes in currency exchange rates during 2017 and 2018 . Income tax returns are filed in multiple domestic and foreign jurisdictions, which are subject to examinations by taxing authorities. As of December 31, 2018 , the Company is subject to U.S. federal tax examination for tax years 2015 through 2018 . The Company is subject to state, local, and foreign income tax examinations for tax years 2010 through 2018 . The Company does not believe that the results of these examinations will have a significant impact on the Company’s tax position or its effective tax rate. Management monitors changes in tax statutes and regulations and the issuance of judicial decisions to determine the potential impact to UTPs. As of December 31, 2018 , the Company estimated that approximately $0.8 million of UTPs in foreign jurisdictions is expected to be released in the next twelve months. Other Matters On December 22, 2017, the Act was signed into law. The Act changed many aspects of corporate income taxation, including the reduction of the corporate income tax rate from 35% to 21% and imposition of a one-time tax on deemed repatriated earnings of foreign subsidiaries. The SEC issued a Staff Accounting Bulletin No. 118 (“SAB 118”), which allows a provisional estimate when a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting for certain income tax effects of the Act. SAB 118 allows for adjustments to provisional amounts during a measurement period of up to one year. In accordance with SAB 118, the Company has made reasonable estimates related to the liability associated with the transition tax, the remeasurement of U.S. deferred tax balances and other deferred tax adjustments based on provisions of the Act. As a result, the Company has recognized income tax expense of $11.9 million associated with these items in 2017 . Further analysis was completed related to the provisional estimates recorded at December 31. 2017 under SAB 118 based on guidance provided by the Internal Revenue Service and Department of Treasury in notices and regulations. The company finalized the Transition Tax liability calculation and corresponding allowable foreign tax credit during 2018 and adjusted its December 31, 2017 provisional amount by an additional tax expense of $2.3 million . The balance of the 2018 Transition Tax liability was determined to be satisfied with existing U.S. tax attributes resulting in no current income tax payable. No additional adjustment was required under SAB118. The Act includes new U.S. provisions, the global intangible low-taxed income (“GILTI”) provision, the base-erosion and anti-abuse tax (“BEAT”) provision and a limitation to the deductibility of interest expense. GILTI requires the Company to include in its U.S. income tax return non-U.S. subsidiary earnings in excess of an allowable return on the non-U.S. subsidiary’s tangible assets. BEAT eliminates the deduction of certain base-erosion payments made to related non-U.S. corporations, and imposes a minimum tax if the amount is greater than the regular tax. GILTI will apply to the Company starting in tax year 2019 due to the fiscal year end of the foreign subsidiaries. The company has elected to treat GILTI as a period cost. The Company is not subject to BEAT based on the level of gross receipts. The Company’s interest deduction is not limited based on the new interest deductibility rules in 2018.

Other Expenses, Net

Other Expenses, Net	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Other Expenses, Net	Other Expense, Net Other expense, net consists of the following components: Year ended December 31, 2018 2017 2016 (dollars in thousands) Brink acquisition ticking fee $ 5,130 $ — $ — Brazil acquisition indemnification asset 4,300 1,520 1,500 Customer pay discounts 1,600 1,540 1,210 Foreign currency (gain) / loss 960 800 (480 ) Accretion arising from lease recovery 240 270 320 Gain on sale of Broom & Brush — (1,300 ) — Currency option premium purchase — — 840 Other 900 (100 ) (780 ) Total other expense, net $ 13,130 $ 2,730 $ 2,610

Summary Quarterly Financial Dat

Summary Quarterly Financial Data	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary Quarterly Financial Data	Summary Quarterly Financial Data Three months ended March 31, 2018 June 30, 2018 September 30, 2018 December 31, 2018 (unaudited, dollars in thousands, except for per share data) Net sales $ 216,810 $ 233,340 $ 227,840 $ 171,960 Gross profit $ 38,450 $ 47,570 $ 43,620 $ 14,240 Net loss $ (57,760 ) $ (67,160 ) $ (33,000 ) $ (46,980 ) Net loss attributable to Horizon Global $ (57,510 ) $ (66,930 ) $ (32,760 ) $ (46,760 ) Net loss per share attributable to Horizon Global: Basic $ (2.30 ) $ (2.68 ) $ (1.31 ) $ (1.86 ) Diluted $ (2.30 ) $ (2.68 ) $ (1.31 ) $ (1.86 ) Three months ended March 31, 2017 June 30, 2017 September 30, 2017 December 31, 2017 (unaudited, dollars in thousands, except for per share data) Net sales $ 203,280 $ 253,590 $ 240,120 $ 195,990 Gross profit $ 45,390 $ 67,670 $ 58,420 $ 36,120 Net income (loss) $ (10,160 ) $ 19,970 $ 6,560 $ (21,140 ) Net income (loss) attributable to Horizon Global $ (9,860 ) $ 20,260 $ 6,890 $ (20,840 ) Net income (loss) per share attributable to Horizon Global: Basic $ (0.41 ) $ 0.80 $ 0.28 $ (0.84 ) Diluted $ (0.41 ) $ 0.79 $ 0.27 $ (0.84 )

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On March 1, 2019, the Company entered into an agreement of sale of certain business assets in its Europe-Africa operating segment, via a share and asset sale (the “Sale”). Under the terms of the Sale, effective March 1, 2019, the Company disposed of certain non-automotive business assets, including the trade name, that operated using the Terwa brand for $5.5 million . The Sale will be accounted for in the first quarter of 2019, pending customary closing conditions. Senior Term Loan Agreement On February 20, 2019, the Company entered into a Credit Agreement (the “Senior Term Loan Agreement”) with Cortland Capital Markets Services LLC, as administrative agent and collateral agent, and the lenders party thereto. The Senior Term Loan Agreement provided for a short-term loan facility in the aggregate principal amount of $10.0 million , all of which was borrowed by the Company. Certain of the lenders under the Company’s Term Loan Agreement, are the lenders under the Senior Term Loan Agreement. The Senior Term Loan Agreement required the Company to obtain additional financing in amounts and on terms acceptable to the lenders. Borrowings under the Senior Term Loan Agreement originally matured on March 7, 2019, but were extended to March 15, 2019. The Senior Term Loan Agreement was repaid on March 15, 2019, in conjunction with the additional financing further detailed below. Second Lien Term Loan Agreement On March 15, 2019, the Company entered into a Credit Agreement (the “Second Lien Term Loan Agreement”) with Cortland Capital Markets Services LLC, as administrative agent and collateral agent, and certain funds managed by Corre Partners Management LLC and any assignees thereof as the lenders. The Second Lien Term Loan Agreement provides for a term loan facility in the aggregate principal amount of $51.0 million and matures on September 30, 2021. The Second Lien Term Loan Agreement is secured by a second lien on substantially the same collateral as the Term B Loan, bears an interest rate of LIBOR plus 11.5% payable in kind through an increase in principal balance, and is subject to various affirmative and negative covenants including a secured net leverage ratio tested quarterly, commencing with the fiscal quarter ending on December 31, 2019, which shall not exceed (x) 6.75 to 1.00 as of the last day of any fiscal quarter ending on or prior to June 30, 2020 and (y) 5.25 to 1.00 as of the last day of any fiscal quarter ending on or after September 30, 2020. Pursuant to the Second Lien Term Loan Agreement, the Company will issue 6.25 million detachable warrants to purchase common stock of the Company, which can be exercised on a cashless basis with a 5 -year term with an exercise price of $1.50 per share. A portion of the warrants will not be issued unless approved by a shareholder vote, and 18% interest paid in kind preferred stock will be issued in the interim and will be cancelled and converted into warrants upon receipt of shareholder approval. In connection with the entry into the Second Lien Term Loan Agreement, we agreed to appoint four new members to our board of directors within seven business days of closing, and that the four new members of our board will constitute a majority of our board of directors. The proceeds, net of applicable fees, of the Second Lien Term Loan Agreement were used to repay the Senior Term Loan Agreement and to provide additional liquidity and working capital for the Company. Term Loan Agreement On February 20, 2019, the Company entered into the Fifth Amendment to Credit Agreement (the “Fifth Term Amendment”) to amend the Term Loan Agreement to permit the Company to enter into the Senior Term Loan Agreement and tightened certain indebtedness, asset sale, investment and restricted payment baskets. On March 15, 2019, the Company entered into the Sixth Amendment to Credit Agreement (the “Sixth Term Amendment”) to amend the Term Loan Agreement to permit the Company to enter into the Second Lien Term Loan Agreement, which amended certain financial covenants to provide for relief based on the Company’s 2018 results and 2019 budget, and to make certain other affirmative and negative covenants more restrictive. The prior net leverage covenant ratio was eliminated and replaced with a first lien leverage covenant starting with the 12-month period ending September 2019 as follows: September 30, 2019: 8.25 :1.00 December 31, 2019: 6.25 :1.00 March 31, 2020: 5.50 :1.00 June 30, 2020: 5.00 :1.00 September 30, 2020 and each fiscal quarter ending thereafter: 4.75 :1.00 The Sixth Term Amendment also adds a fixed charge coverage covenant starting with fiscal quarter ending March 31, 2020, a minimum liquidity covenant of $15.0 million starting March 31, 2019, and a maximum capital expenditure covenant of $15.0 million for 2019 and $25.0 million annually thereafter. The interest rate on the Term Loan Agreement is also amended to add 3.0% paid in kind interest in addition to the existing cash pay interest. Because of the Sixth Term Amendment, the Company is in compliance with all of its financial covenants as of the period ending December 31, 2018. ABL Facility On February 20, 2019, the Company entered into the Fourth Amendment to amend the ABL Loan Agreement (the “Fourth ABL Amendment”). The Fourth ABL Amendment, among other modifications, permitted the Company to enter into the Senior Term Loan Agreement and make certain indebtedness, asset sale, investment and restricted payment baskets covenants more restrictive. On March 7, 2019, the Company entered into the Fifth Amendment to amend the ABL Loan Agreement (the “Fifth ABL Amendment”). The Fifth ABL Amendment allowed for the extension of the Senior Term Loan Agreement to March 15, 2019. On March 15, 2019, the Company entered into the Sixth Amendment to amend the ABL Loan Agreement (the “Sixth ABL Amendment”). The Sixth ABL Amendment allowed for the Company to enter into the Second Lien Term Loan Agreement and provided for certain other modifications of the ABL Loan Agreement. In particular, the ABL Loan Agreement was modified to (a) increase the interest rate by 1% , (b) reduce the total facility size to $90.0 million , and to limit ability to add debt in the future. Covenant and Liquidity Matters As a result of the above series of modifications and additional debt facilities and our current forecast through March 2020, the Company believes it has sufficient liquidity to operate its business. In addition to meeting its working capital needs, the Sixth Term Amendment requires the Company to raise a minimum of $100.0 million through a combination of asset sales, junior debt, or equity raise to make a contractually obligated prepayment of the Term Loan on or before March 31, 2020. We are currently evaluating all strategic alternatives related to the options to raise the funds necessary to comply with this contractual prepayment obligation. If we cannot generate the required cash, we may not be able to make the necessary payments required under our debt as of March 31, 2020, which would result in an event of default. Such a default, if not cured, would allow the lenders to accelerate the maturity of the debt, making it due and payable at that time. The Company estimates it incurred approximately $10.0 million of debt issuance costs and amendment fees associated with the above transactions. The transactions will be accounted for in the first quarter of 2019.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	SCHEDULE II PURSUANT TO ITEM 15(a)(2) OF FORM 10-K VALUATION AND QUALIFYING ACCOUNTS FOR THE YEARS ENDED December 31, 2018 , 2017 AND 2016 (Dollars in thousands) ADDITIONS DESCRIPTION BALANCE AT BEGINNING OF PERIOD CHARGED TO COSTS AND EXPENSES CHARGED (CREDITED) TO OTHER ACCOUNTS (1) DEDUCTIONS (2) BALANCE AT END OF PERIOD Allowance for doubtful accounts deducted from accounts receivable in the balance sheet Year ended December 31, 2018 $ 3,100 $ 920 $ 1,200 $ 80 $ 5,140 Year ended December 31, 2017 $ 3,810 $ 640 $ (1,340 ) $ 10 $ 3,100 Year ended December 31, 2016 $ 2,960 $ 910 $ 50 $ 110 $ 3,810 ______________ (1) Allowance of companies acquired, and other adjustments, net. (2) Deductions, representing uncollectible accounts written-off, less recoveries of amounts written-off in prior years.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the assets, liabilities, revenues and expenses of Horizon Global and its wholly-owned subsidiaries. In addition, the consolidated financial statements include the consolidation of a variable interest entity (“VIE”) for which the Company has been deemed to be the primary beneficiary. The consolidated financial statements include the assets and liabilities of the VIE at December 31, 2018 and 2017 , and the revenue and expenses of the VIE for the period beginning October 1, 2016. Intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires management of the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. Such estimates and assumptions also affect the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the carrying amount of property and equipment, goodwill and other intangibles, valuation allowances for receivables, inventories and deferred income tax assets, valuation of derivatives, estimated future unrecoverable lease costs, estimated uncertain tax positions, legal and product liability matters, assets and obligations related to employee benefits, and the respective allocation methods. Actual results may differ from such estimates and assumptions.
Cash and Cash Equivalents	Cash and Cash Equivalents. The Company considers cash on hand and on deposit and investments in all highly liquid debt instruments with initial maturities of three months or less to be cash and cash equivalents.
Account Receivables	Account Receivables. Receivables consist primarily of amounts from contracts with customers for the sale of towing, trailering, cargo management and other related accessories. Receivables are presented net of allowances for doubtful accounts of approximately $5.1 million and $3.1 million at December 31, 2018 and 2017 , respectively. The Company monitors its exposure for credit losses and maintains allowances for doubtful accounts based upon the Company’s best estimate of probable losses inherent in the accounts receivable balances. The Company does not believe that significant credit risk exists due to its diverse customer base.
Account Receivables Factoring	Account Receivables Factoring. The Company has factoring arrangements with financial institutions to sell certain accounts receivable under certain recourse and non-recourse agreements. Total receivables sold under the factoring arrangements were approximately $242.8 million and $257.5 million as of December 31, 2018 and 2017 , respectively. The sales of accounts receivable in accordance with the factoring arrangements are reflected as a reduction of Receivables, net in the consolidated balance sheets as they meet the applicable criteria of Accounting Standards Codification (“ASC”) 860, “ Transfers and Servicing.” The holdback amounts due from the factoring institutions were approximately $ 3.1 million each as of December 31, 2018 and 2017 , respectively, and is shown in Receivables, net in the consolidated balance sheets. Cash proceeds from these arrangements are included in the change in receivables under the operating activities section of the consolidated statements of cash flows. The Company pays factoring fees associated with the sale of receivables based on the dollar value of the receivables sold.
Inventories	Inventories. Inventories are stated at lower of cost or net realizable value, with cost determined using the first-in, first-out basis. Direct materials, direct labor and allocations of variable and fixed manufacturing-related overhead are included in inventory cost. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal and transportation.
Property and Equipment	Property and Equipment. Property and equipment additions, including significant improvements, are recorded at cost. Upon retirement or disposal of property and equipment, the historical cost and accumulated depreciation are removed from the accounts, and any gain or loss is included in the accompanying consolidated statements of operations. Repair and maintenance costs are charged to expense as incurred.
Depreciation and Amortization and Impairment of Long-Lived Assets and Definted-Lived Intangible Assets	Depreciation. Depreciation is computed principally using the straight-line method over the estimated useful lives of the assets. Annual depreciation rates are as follows: Fixed Asset Category Estimated Useful Life Building and Land/building improvements 10 - 40 years Machinery and Equipment 3 - 15 years Impairment of Long-Lived Assets and Definite-Lived Intangible Assets. The Company reviews, on at least a quarterly basis, the financial performance of each business unit for indicators of impairment. In reviewing for impairment indicators, the Company considers events or changes in circumstances such as business prospects, customer retention, market trends, potential product obsolescence, competitive activities and other economic factors. An impairment loss is recognized when the carrying value of an asset group exceeds the future net undiscounted cash flows expected to be generated by that asset group. The impairment loss recognized is the amount by which the carrying value of the asset group exceeds its fair value.
Goodwill and Indefinite-Lived Intangibles	Goodwill. Goodwill is acquired in a business combination and represents the excess of purchase consideration over the fair value of assets acquired and liabilities assumed. The Company determines its reporting units at the individual operating segment level, or one level below, when there is discrete financial information available that is regularly reviewed by segment management for evaluating operating results. For purposes of the Company’s annual goodwill impairment test, the Company had three reporting units which are the same as its three operating segments, of which the Horizon Americas and Horizon Asia-Pacific reporting units had goodwill of $4.5 million and $8.2 million , respectively, at the 2018 annual test for impairment. The Horizon Europe-Africa reporting unit’s goodwill was written off during 2018 due to interim triggering events that resulted in $124.7 million of impairment charges. See Note 6 , Goodwill and Other Intangible Assets for further information. Goodwill is reviewed by the Company for impairment on a reporting unit basis annually on October 1st or more frequently if indicators are present or changes in circumstances suggest that impairment may exist. The Company performs a qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying amount. If not, no further goodwill impairment testing is performed. If so, then the Company performs testing for possible impairment in a one-step quantitative process. The fair value of a reporting unit is compared with its carrying value, including goodwill. If fair value exceeds the carrying value, goodwill is not considered to be impaired. If the fair value of a reporting unit is below the carrying value, then goodwill is considered to be impaired in the amount of the excess of a reporting unit’s carrying value over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. Indefinite-Lived Intangibles. The Company assesses indefinite-lived intangible assets for impairment annually on October 1st by reviewing relevant quantitative factors. More frequent evaluations may be required if the Company experiences changes in its business climate or as a result of other triggering events that take place. Indefinite-lived intangible assets are tested for impairment by comparing the fair value of each intangible asset with its carrying value. The value of indefinite-lived intangible assets are based on the present value of projected cash flows using a relief from royalty approach. If the carrying value exceeds fair value, the intangible asset is considered impaired and is reduced to fair value. The Company recognized indefinite-lived intangible impairment charges of $2.1 million for the year ended December 31, 2018. See Note 6 , Goodwill and Other Intangible Assets, for further information.
Self-insurance	Self-insurance. Horizon instituted self-insurance plans for losses and liabilities related to workers’ compensation and comprehensive general, product and vehicle liability at the time of spin-off which ran through June 30, 2016. The Company was generally responsible for up to $1.0 million per occurrence under our comprehensive general, product and vehicle liability plan and $0.5 million under our workers’ compensation plan. Beginning on July 1, 2016, Horizon is fully insured for workers’ compensation and retains no liability for claims under the new plan, and are generally responsible for up to $0.8 million per occurrence under our comprehensive general, product and vehicle liability plan. Reserves for claim losses, including an estimate of related litigation defense costs, are recorded based upon the Company’s estimates of the aggregate liability for claims incurred using actuarial assumptions about future events. Changes in assumptions for factors such as actual experience could cause these estimates to change.
Revenue Recognition	Revenue Recognition. Revenue is measured based on a consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. See Note 4 , Revenue , for further information on the Company’s revenue recognition in accordance with ASC Topic 606.
Cost of Sales	Cost of Sales. Cost of sales includes material, labor and overhead costs incurred in the manufacture of products sold in the period. Material costs include raw material, purchased components, outside processing and shipping and handling costs. Overhead costs consist of variable and fixed manufacturing costs, wages and fringe benefits, and purchasing, receiving and inspection costs.
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses. Selling, general and administrative expenses include the following: costs related to the advertising, sale, marketing and distribution of the Company’s products, outbound freight costs, amortization of customer intangible assets, costs of finance, human resources, legal functions, executive management costs and other administrative expenses.
Research and Development Costs	Research and Development Costs. Research and development (“R&D”) costs are expensed as incurred. R&D expenses were approximately $15.5 million , $15.4 million and $10.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in cost of sales in the accompanying consolidated statements of operations.
Shipping and Handling Expenses	Shipping and Handling Expenses. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of sales. Other outbound freight costs are included in selling, general and administrative expenses. Shipping and handling expenses, including those of Horizon Americas ’ distribution network, are included in cost of sales in the accompanying consolidated statements of operations. Shipping and handling costs were $19.5 million , $13.3 million and $9.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively.
Advertising and Sales Promotion Costs	Advertising and Sales Promotion Costs. Advertising and sales promotion costs are expensed as incurred. Advertising costs were approximately $4.4 million , $6.2 million and $6.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and are included in selling, general and administrative expenses in the accompanying consolidated statements of operations.
Income Taxes	Income Taxes. The Company computes income taxes using the asset and liability method, whereby deferred income taxes are provided for the temporary differences between the financial reporting basis and the tax basis of assets and liabilities and for operating loss and tax credit carryforwards. Under this method, changes in tax rates and laws are recognized in income in the period such changes are enacted. Valuation allowances are determined based on an assessment of positive and negative evidence on a jurisdiction-by-jurisdiction basis and are utilized to reduce deferred tax assets to the amount more likely than not to be realized. The Company recognizes the effect of income tax positions only if those positions have a probability of more likely than not of being sustained in an audit. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to uncertain tax positions within income tax expense. Accrued interest and penalties are included within the related tax liability line in the consolidated balance sheets. The provision for federal, foreign, and state and local income taxes is calculated on income before income taxes based on current tax law and includes the cumulative effect of any changes in tax rates from those used previously in determining deferred tax assets and liabilities. Such provision differs from the amounts currently payable because certain items of income and expense are recognized in different reporting periods for financial reporting purposes than for income tax purposes.
Foreign Currency Translation	Foreign Currency Translation. The financial statements of subsidiaries located outside of the United States are measured using the currency of the primary economic environment in which they operate as their functional currency. When translating into U.S. dollars, income and expense items are translated at period average exchange rates and assets and liabilities are translated at exchange rates in effect at the balance sheet date. Translation adjustments resulting from transla
Derivative Financial Instruments	Derivative Financial Instruments. The Company records all derivative financial instruments at fair value on the balance sheets as either assets or liabilities, and changes in their fair values are immediately recognized in earnings if the derivatives do not qualify as effective hedges. If a derivative is designated as a fair value hedge, then the effective portion of changes in the fair value of the derivative are offset against the changes in the fair value of the underlying hedged item. If a derivative is designated as a cash flow hedge, then the effective portion of the changes in the fair value of the derivative is recognized as a component of other comprehensive income (loss) until the underlying hedged item is recognized in earnings or the forecasted transaction is no longer probable of occurring. When the underlying hedged transaction is realized or the hedged transaction is no longer probable, the gain or loss included in accumulated other comprehensive income (loss) is recorded in earnings and reflected in the consolidated statements of operations through the same line item as the underlying hedged item. The Company formally documents hedging relationships for all derivative transactions and the underlying hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions.
Fair Value of Financial Instruments	Fair Value of Financial Instruments. In accounting for and disclosing the fair value of these instruments, the Company uses the following hierarchy: ▪ Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date; ▪ Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and ▪ Level 3 inputs are unobservable inputs for the asset or liability. Valuation of the Company’s foreign currency forward contracts and cross currency swaps are based on the income approach, which uses observable inputs such as forward currency exchange rates and swap rates. The carrying value of financial instruments reported in the balance sheets for current assets and current liabilities approximates fair value due to the short maturity of these instruments.
Business Combinations	Business Combinations. The Company records assets acquired and liabilities assumed from acquisitions at fair value. The fair value of working capital accounts, except inventory generally approximate book value. The valuation of inventory, property, plant and equipment, and intangible assets require significant assumptions. Inventory is recorded based on the estimated selling price less costs to sell, including completion, disposal and holding period costs with a reasonable profit margin. Property, plant and equipment is recorded at fair value using a combination of both the cost and market approaches for both the real and personal property acquired. Under the cost approach, consideration is given to the amount required to construct or purchase a new asset of equal value at current prices, with adjustments in value for physical deterioration, as well as functional and economic obsolescence. Under the market approach, recent transactions for similar types of assets are used as the basis for estimating fair value. For trademark/trade names and technology and other intangible assets, the estimated fair value is based on projected discounted future net cash flows using the relief-from-royalty method. For customer relationship intangible assets, the estimated fair value is based on projected discounted future cash flows using the excess earnings method. The relief-from-royalty and excess earnings method are both income approaches that utilize key assumptions such as forecasts of revenue and expenses over an extended period of time, royalty rate percentages, tax rates, and estimated costs of debt and equity capital to discount the projected cash flows.
Earnings Per Share	Earnings (Loss) Per Share. Basic earnings (loss) per share (“EPS”) is computed based upon the weighted average number of common shares outstanding for each period. Diluted EPS is computed based on the weighted average number of common shares and common equivalent shares. Common equivalent shares represent the effect of stock-based awards, warrants, and convertible notes during each period presented, which, if exercised, earned, or converted, would have a dilutive effect on EPS. Dilutive EPS are calculated to give effect to stock options and warrants, restricted shares outstanding, and convertible notes during each period.
Stock-based Compensation	Stock-based Compensation. The Company measures stock-based compensation expense at fair value as of the grant date in accordance with U.S. GAAP and recognizes such expenses over the vesting period of the stock-based employee awards. Stock options are issued with an exercise price equal to the opening market price of Horizon common shares on the date of grant. The fair value of stock options is determined using a Black-Scholes option pricing model, which incorporates assumptions regarding the expected volatility, expected option life, risk-free interest rate and expected dividend yield. In addition, the Company periodically updates its estimate of attainment for each restricted share with a performance factor based on current and forecasted results, reflecting the change from prior estimate, if any, in current period compensation expense. O
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss). The Company refers to other comprehensive income (loss) as revenues, expenses, gains and losses that under U.S. GAAP are included in comprehensive income (loss) but are excluded from net losses as these amounts are recorded directly as an adjustment to accumulated deficit. Other comprehensive income (loss) is comprised of foreign currency translation adjustments and changes in unrealized gains and losses on forward currency contracts and cross currency swaps.

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Net Sales Disaggregated by Major Sales Channels	The following tables present the Company’s net sales by segments and disaggregated by major sales channel for the twelve months ended December 31, 2018 : Horizon Americas Horizon Horizon Total (dollars in thousands) Net Sales Automotive OEM $ 80,300 $ 174,040 $ 23,810 $ 278,150 Automotive OES 5,610 50,890 60,620 117,120 Aftermarket 114,450 77,190 25,070 216,710 Retail 115,920 — 11,460 127,380 Industrial 38,810 — 15,040 53,850 E-commerce 34,220 4,570 — 38,790 Other 1,380 16,570 — 17,950 Total $ 390,690 $ 323,260 $ 136,000 $ 849,950

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the fair value of consideration paid for Best Bars, and the assets acquired and liabilities assumed: Acquisition Date (dollars in thousands) Consideration Cash paid $ 19,570 Recognized amounts of identifiable assets acquired and liabilities assumed Receivables 2,100 Inventories 2,340 Other intangibles 7,690 Prepaid expenses and other current assets 110 Property and equipment 2,250 Accounts payable and accrued liabilities (1,680 ) Deferred income taxes (2,150 ) Total identifiable net assets 10,660 Goodwill 8,910 $ 19,570

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 are as follows: Horizon Americas Horizon Europe‑Africa Horizon Asia‑Pacific Total (dollars in thousands) Balances at December 31, 2016 $ 5,370 $ 114,820 $ — $ 120,190 Goodwill from acquisitions (a) — — 6,990 6,990 Foreign currency translation (90 ) 11,340 (240 ) 11,010 Balances at December 31, 2017 5,280 126,160 6,750 138,190 Impairment — (124,660 ) — (124,660 ) Foreign currency translation and other (780 ) (1,500 ) 1,410 (870 ) Balances at December 31, 2018 $ 4,500 $ — $ 8,160 $ 12,660 __________________________ (a) Attributable to the acquisition of Best Bars, as further described in Note 5 , “ Acquisitions ”.
Schedule of Intangible Assets (excluding Goodwill) by Major Class	The gross carrying amounts and accumulated amortization of the Company’s other intangibles are summarized below. December 31, 2018 December 31, 2017 Intangible Category by Useful Life Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (dollars in thousands) Finite-lived intangible assets: Customer relationships, 5 - 20 years $ 177,910 $ (127,740 ) $ 180,850 $ (121,750 ) Technology and other, 3 - 15 years 21,000 (15,910 ) 19,950 (15,260 ) Trademark/Trade names, 1 - 8 years 730 (250 ) 730 (190 ) Total finite-lived intangible assets 199,640 (143,900 ) 201,530 (137,200 ) Trademark/Trade names, indefinite-lived 22,310 — 25,900 — Total other intangible assets $ 221,950 $ (143,900 ) $ 227,430 $ (137,200 )
Schedule of Finite-Lived Intangible Assets, Amortization Expense	Amortization expense related to intangible assets as included in the accompanying consolidated statements of operations is summarized as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Technology and other, included in cost of sales $ 1,840 $ 710 $ 170 Customer relationships & Trademark/Trade names, included in selling, general and administrative expenses 7,100 9,700 7,790 Total amortization expense $ 8,940 $ 10,410 $ 7,960
Schedule of Expected Amortization Expense [Table Text Block]	Estimated amortization expense for the next five fiscal years beginning after December 31, 2018 is as follows: Year ended December 31, Estimated Amortization Expense (dollars in thousands) 2019 $ 8,150 2020 7,890 2021 6,160 2022 5,540 2023 4,970 The Company performed an annual qualitative indefinite-lived impairment assessment as of October 1, 2018. The assessment indicated that it was more likely than not that the fair value of each of the indefinite-lived intangible assets exceeded its respective carrying value. The Company specifically assessed its Terwa trade name during the fourth quarter of 2018 and identified an impairment. The trade name has been written off as of the year-ended December 31, 2018 , resulting in a charge of approximately $1.0 million .

Inventories, Net (Tables)

Inventories, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories, net consist of the following components: December 31, December 31, (dollars in thousands) Finished goods $ 112,620 $ 113,740 Work in process 21,470 17,960 Raw materials 55,640 53,950 Total inventories $ 189,730 $ 185,650 Reserves (16,040 ) (14,150 ) Inventories, net $ 173,690 $ 171,500

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment, net consists of the following components: December 31, December 31, (dollars in thousands) Land and land improvements $ 460 $ 480 Buildings 21,440 23,370 Machinery and equipment 161,750 162,830 183,650 186,680 Less: Accumulated depreciation 81,370 73,660 Property and equipment, net $ 102,280 $ 113,020
Depreciation Expense	Depreciation expense as included in the accompanying consolidated statements of operations is as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Depreciation expense, included in cost of sales $ 15,110 $ 13,730 $ 8,800 Depreciation expense, included in selling, general and administrative expense 1,330 1,200 1,460 Total depreciation expense $ 16,440 $ 14,930 $ 10,260

Accrued and Other Long-term L_2

Accrued and Other Long-term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Accrued Liabilities [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities consist of the following components: December 31, December 31, (dollars in thousands) Customer claims 14,160 2,170 Accrued compensation 10,230 10,360 Customer incentives 10,100 8,800 Restructuring 7,530 3,940 Accrued professional services 4,770 4,140 Deferred purchase price 3,400 1,930 Short-term tax liabilities 1,930 7,700 Cross currency swap 1,610 — Other 12,090 14,030 Total accrued liabilities $ 65,820 $ 53,070 Other long-term liabilities consist of the following components: December 31, December 31, (dollars in thousands) Long-term tax liabilities $ 6,270 $ 13,750 Restructuring 2,580 3,100 Deferred purchase price 30 3,350 Cross currency swap — 7,830 Other 11,080 10,340 Total other long-term liabilities $ 19,960 $ 38,370

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Debt	The Company’s long-term debt consists of the following: December 31, December 31, (dollars in thousands) ABL Facility $ 61,570 $ 10,000 Term B Loan 190,520 149,620 Convertible Notes 125,000 125,000 Bank facilities, capital leases and other long-term debt 18,990 25,780 396,080 310,400 Less: Unamortized debt issuance costs and original issuance discount on Term B Loan 7,380 4,940 Unamortized debt issuance costs and discount on the Convertible Notes 24,190 29,870 Current maturities, long-term debt 13,860 16,710 Long-term debt $ 350,650 $ 258,880
Interest Income and Interest Expense Disclosure	Interest expense recognized relating to the contractual interest coupon, amortization of debt discount and amortization of debt issuance costs on the Convertible Notes included in the accompanying consolidated statements of operations are as follows: Year ended December 31, 2018 2017 (dollars in thousands) Contractual interest coupon on convertible debt $ 3,490 $ 3,190 Amortization of debt issuance costs $ 530 $ 490 Amortization of "equity discount" related to debt $ 5,150 $ 4,380
Schedule of Maturities of Long-term Debt	Future maturities of the face value of long-term debt at December 31, 2018 are as follows: Years ending December 31, Future maturities of long-term debt (dollars in thousands) 2019 $ 13,860 2020 76,890 2021 170,000 2022 125,000 2023 — Thereafter 10,330 Total $ 396,080

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	he fair value carrying amount of the Company’s derivative instruments were recorded as follows: Asset / (Liability) Derivatives Balance Sheet Caption December 31, 2018 December 31, 2017 (dollars in thousands) Derivatives designated as hedging instruments Foreign currency forward contracts Prepaid expenses and other current assets $ 1,910 $ — Foreign currency forward contracts Accrued liabilities — (670 ) Cross currency swap Accrued Liabilities (2,480 ) — Cross currency swap Other long-term liabilities — (7,830 ) Total derivatives designated as hedging instruments (570 ) (8,500 ) Derivatives not designated as hedging instruments Foreign currency forward contracts Prepaid expenses and other current assets 290 110 Foreign currency forward contracts Accrued liabilities — (90 ) Cross currency swap Other assets — 90 Cross currency swap Accrued liabilities (90 ) — Total derivatives de-designated as hedging instruments 200 110 Total derivatives $ (370 ) $ (8,390 )
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following table summarizes the gain or loss recognized in AOCI and the amounts reclassified from AOCI into earnings and the amounts recognized directly into earnings: Amount of Gain (Loss) Location of Gain (Loss) Reclassified from AOCI into Earnings Amount of Gain (Loss) Reclassified from December 31, Year ended December 31, 2018 2017 2018 2017 2016 (dollars in thousands) (dollars in thousands) Derivative instruments Foreign currency forward contracts $ 1,870 $ (580 ) Cost of sales $ 1,070 $ 940 $ (1,620 ) Cross currency swap $ 90 $ 270 Other expense, net $ 5,330 $ (15,820 ) $ 7,510
Fair Value Measurements, Recurring and Nonrecurring	Fair value measurements and the fair value hierarchy level for the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and December 31, 2017 are shown below: Frequency Asset / (Liability) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (dollars in thousands) December 31, 2018 Foreign currency forward contracts Recurring $ 2,200 $ — $ 2,200 $ — Cross currency swaps Recurring $ (2,570 ) $ — $ (2,570 ) $ — December 31, 2017 Foreign currency forward contracts Recurring $ (650 ) $ — $ (650 ) $ — Cross currency swap Recurring $ (7,740 ) $ — $ (7,740 ) $ —

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Liabilities	The following table provides a summary of the Company’s consolidated restructuring liabilities and related activity for each type of exit cost as of and for the years ended December 31, 2018: Employee Costs Facility Closure and Other Costs Total (dollars in thousands) Balances at December 31, 2017 1,850 5,190 7,040 Restructuring charges 10,440 2,680 13,120 Payments and other (1) (7,300 ) (2,750 ) (10,050 ) Balances at December 31, 2018 $ 4,990 $ 5,120 $ 10,110 (1) Other consists of changes in the liability balance due to foreign currency translation.

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Minimum payments for operating leases having initial or remaining non-cancellable lease terms in excess of one year at December 31, 2018 are summarized below (in thousands): December 31, Minimum payments (dollars in thousands) 2019 $ 15,820 2020 14,790 2021 12,590 2022 7,900 2023 4,830 Thereafter 13,090 Total $ 69,020

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the reconciliation of the numerator and the denominator of basic loss per share attributable to Horizon Global and diluted loss per share attributable to Horizon Global: Year Ended December 31, 2018 2017 2016 (dollars in thousands, except for per share amounts) Numerator: Net loss attributable to Horizon Global $ (203,960 ) $ (3,550 ) $ (12,360 ) Denominator: Weighted average shares outstanding, basic 25,053,013 24,781,349 18,775,500 Dilutive effect of stock-based awards — — — Weighted average shares outstanding, diluted 25,053,013 24,781,349 18,775,500 Basic loss per share attributable to Horizon Global $ (8.14 ) $ (0.14 ) $ (0.66 ) Diluted loss per share attributable to Horizon Global $ (8.14 ) $ (0.14 ) $ (0.66 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	A summary of these anti-dilutive common stock equivalents is provided in the table below: Year Ended December 31, 2018 2017 2016 Number of options 240,647 343,782 331,485 Exercise price of options $9.20 - $11.29 $9.20 - $11.29 $9.20 - $11.29 Restricted stock units 646,336 584,335 526,751 Convertible Notes 5,005,000 4,566,205 — Warrants 5,005,000 4,566,205 —

Equity Awards (Tables)

Equity Awards (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	Number of Stock Options Weighted Average Exercise Price Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Outstanding at December 31, 2017 338,349 $ 10.38 — — Granted — — — — Exercised — — — — Canceled, forfeited (245,382 ) 10.37 — — Expired — — — — Outstanding at December 31, 2018 92,967 $ 10.40 4.6 $ —
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	Changes in the number of restricted stock units outstanding for the year ended December 31, 2018 were as follows: Number of Restricted Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2017 582,611 $ 13.51 Granted 477,963 7.43 Vested (331,456 ) 11.67 Canceled, forfeited (309,190 ) 11.12 Outstanding at December 31, 2018 419,928 $ 9.75

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income	Changes in AOCI attributable to Horizon Global by component, net of tax, for the years ended December 31, 2018 , 2017 , and 2016 are summarized as follows: Derivative Instruments Foreign Currency Translation and Other Total (dollars in thousands) Balances at January 1, 2016 $ (710 ) $ 3,180 $ 2,470 Net unrealized losses arising during the period (a) 3,170 (10,590 ) (7,420 ) Less: Net realized losses reclassified to net income (b) 3,390 — 3,390 Net current-period change (220 ) (10,590 ) (10,810 ) Balances at December 31, 2016 (930 ) (7,410 ) (8,340 ) Net unrealized gains (losses) arising during the period (a) (8,810 ) 17,810 9,000 Less: Net realized gains reclassified to net income (b) (9,350 ) — (9,350 ) Net current-period change 540 17,810 18,350 Balances at December 31, 2017 (390 ) 10,400 10,010 Impact of ASU 2018-02 80 480 560 Balances at December 31, 2017, as restated (310 ) 10,880 10,570 Net unrealized gains (losses) arising during the period (a) 7,440 (5,080 ) 2,360 Less: Net realized losses reclassified to net income (b) 5,170 — 5,170 Net current-period change 2,270 (5,080 ) (2,810 ) Balances at December 31, 2018 $ 1,960 $ 5,800 $ 7,760 __________________________ (a) Derivative instruments, net of income tax benefit (expense) of $(1.4) million , $5.2 million , and $(2.5) million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. See Note 11 , “ Derivative Instruments ,” for further details. (b) Derivative instruments, net of income tax benefit (expense) of $1.3 million , $5.5 million , and $(2.5) million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. See Note 11 , “ Derivative Instruments ,” for further details.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Segment activity is as follows: Year ended December 31, 2018 2017 2016 (dollars in thousands) Net Sales Horizon Americas $ 390,690 $ 439,700 $ 443,240 Horizon Europe‑Africa 323,260 325,970 104,080 Horizon Asia‑Pacific 136,000 127,310 101,880 Total $ 849,950 $ 892,980 $ 649,200 Operating Profit (Loss) Horizon Americas $ (6,850 ) $ 44,060 $ 38,680 Horizon Europe‑Africa (148,630 ) (1,790 ) (13,320 ) Horizon Asia‑Pacific 20,250 18,740 11,230 Corporate (35,160 ) (26,250 ) (30,290 ) Total $ (170,390 ) $ 34,760 $ 6,300 Capital Expenditures Horizon Americas $ 6,760 $ 10,150 $ 5,550 Horizon Europe‑Africa 4,500 13,190 4,670 Horizon Asia‑Pacific 2,610 2,440 3,310 Corporate — 1,510 1,010 Total $ 13,870 $ 27,290 $ 14,540 Depreciation and Amortization Horizon Americas $ 8,160 $ 10,660 $ 10,750 Horizon Europe‑Africa 12,090 10,110 3,290 Horizon Asia‑Pacific 4,800 4,310 4,090 Corporate 330 260 90 Total $ 25,380 $ 25,340 $ 18,220 December 31, 2018 2017 (dollars in thousands) Total Assets Horizon Americas $ 219,680 $ 209,210 Horizon Europe - Africa 173,980 341,750 Horizon Asia‑Pacific 119,590 88,210 Corporate 8,100 21,860 Total $ 521,350 $ 661,030
Reconciliation of Assets from Segment to Consolidated	December 31, 2018 2017 (dollars in thousands) Total Assets Horizon Americas $ 219,680 $ 209,210 Horizon Europe - Africa 173,980 341,750 Horizon Asia‑Pacific 119,590 88,210 Corporate 8,100 21,860 Total $ 521,350 $ 661,030
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following tables present the Company’s net sales and net fixed assets attributed to each subsidiary’s continent of domicile: Year ended December 31, 2018 2017 2016 (dollars in thousands) Net Sales Total U.S. $ 380,480 $ 423,090 $ 428,770 Non-U.S. Australia 69,440 69,760 60,020 Germany 186,430 194,120 52,350 Other Europe 117,960 114,940 39,520 Asia 67,420 58,140 41,940 Africa 19,880 16,320 12,130 Other Americas 8,340 16,610 14,470 Total non-U.S. 469,470 469,890 220,430 Total $ 849,950 $ 892,980 $ 649,200 December 31, 2018 2017 (dollars in thousands) Property and equipment, net Total U.S. $ 26,560 $ 5,770 Non-U.S. Australia 8,480 10,730 Germany 43,010 48,400 United Kingdom 620 22,920 Other Europe 8,820 9,830 Asia 7,370 7,720 Africa 5,320 5,260 Other Americas 2,100 2,390 Total non-U.S. 75,720 107,250 Total $ 102,280 $ 113,020
Schedule of Net Sales Contributed by Product Group	The following table presents the Company’s net sales contributed by product group: Year ended December 31, 2018 2017 2016 Towing 68.5 % 70.3 % 62.7 % Trailering 16.1 % 16.8 % 21.5 % Cargo Management 6.2 % 6.3 % 8.9 % Other 9.2 % 6.6 % 6.9 % 100.0 % 100.0 % 100.0 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The Company’s income (loss) before income tax, by tax jurisdiction, consisted of the following: Year ended December 31, 2018 2017 2016 (dollars in thousands) Domestic $ (43,200 ) $ (3,880 ) $ (14,630 ) Foreign (168,060 ) 8,860 (1,760 ) Income (loss) before income tax $ (211,260 ) $ 4,980 $ (16,390 )
Schedule of Deferred Tax Assets and Liabilities	The components of deferred taxes are as follows: December 31, 2018 2017 (dollars in thousands) Deferred tax assets: Receivables, net $ 980 $ 460 Inventories 3,610 3,280 Accrued liabilities and other long-term liabilities 10,410 10,600 Tax loss and credit carryforwards 26,720 12,930 Gross deferred tax asset 41,720 27,270 Valuation allowances (26,650 ) (10,560 ) Net deferred tax asset 15,070 16,710 Deferred tax liabilities: Property and equipment, net (5,470 ) (4,300 ) Intangibles, net (18,670 ) (19,710 ) Other (2,390 ) (3,280 ) Gross deferred tax liability (26,530 ) (27,290 ) Net deferred tax liability $ (11,460 ) $ (10,580 )
Schedule of Effective Income Tax Rate Reconciliation	The following is a reconciliation of our provision for income taxes to income tax benefit (expense) computed at the U.S. federal statutory rate: Year ended December 31, 2018 2017 2016 (dollars in thousands) U.S. federal statutory rate 21 % 35 % 35 % Tax at U.S. federal statutory rate $ 44,360 $ (1,740 ) $ 5,730 State and local taxes, net of federal tax benefit 1,500 (340 ) (340 ) Differences in statutory foreign tax rates 13,180 3,680 1,230 Uncertain tax positions 2,680 3,950 1,260 Tax holiday (1) — 950 460 Withholding taxes (990 ) (300 ) (300 ) Tax credits 3,980 590 (70 ) Net change in valuation allowance (19,210 ) (3,020 ) (1,600 ) Transaction costs — (1,610 ) (2,670 ) Tax reform/SAB 118 true-up (2,280 ) (11,850 ) — Goodwill (36,580 ) — — Other, net (280 ) (60 ) 30 Income tax benefit (expense) $ 6,360 $ (9,750 ) $ 3,730 __________________________ (1) Tax holiday related to Thailand which expired on December 31, 2017.
Schedule of Unrecognized Tax Benefits Roll Forward	A reconciliation of the change in the UTPs and related accrued interest and penalties for the years ended December 31, 2018 and 2017 is as follows: Uncertain Tax Positions (dollars in thousands) Balance at December 31, 2016 $ 8,850 Tax positions related to current year: Additions — Reductions — Tax positions related to prior years: Additions 50 Reductions (30 ) Lapses in the statutes of limitations (2,110 ) Cumulative Translation Adjustment 550 Balance at December 31, 2017 $ 7,310 Tax positions related to current year: Additions — Reductions — Tax positions related to prior years: Additions 270 Reductions — Settlements — Lapses in the statutes of limitations (1,580 ) Cumulative Translation Adjustment (340 ) Balance at December 31, 2018 $ 5,660

Other Expenses, Net (Tables)

Other Expenses, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Schedule of Other Expense, Net	Other expense, net consists of the following components: Year ended December 31, 2018 2017 2016 (dollars in thousands) Brink acquisition ticking fee $ 5,130 $ — $ — Brazil acquisition indemnification asset 4,300 1,520 1,500 Customer pay discounts 1,600 1,540 1,210 Foreign currency (gain) / loss 960 800 (480 ) Accretion arising from lease recovery 240 270 320 Gain on sale of Broom & Brush — (1,300 ) — Currency option premium purchase — — 840 Other 900 (100 ) (780 ) Total other expense, net $ 13,130 $ 2,730 $ 2,610

Summary Quarterly Financial D_2

Summary Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Three months ended March 31, 2018 June 30, 2018 September 30, 2018 December 31, 2018 (unaudited, dollars in thousands, except for per share data) Net sales $ 216,810 $ 233,340 $ 227,840 $ 171,960 Gross profit $ 38,450 $ 47,570 $ 43,620 $ 14,240 Net loss $ (57,760 ) $ (67,160 ) $ (33,000 ) $ (46,980 ) Net loss attributable to Horizon Global $ (57,510 ) $ (66,930 ) $ (32,760 ) $ (46,760 ) Net loss per share attributable to Horizon Global: Basic $ (2.30 ) $ (2.68 ) $ (1.31 ) $ (1.86 ) Diluted $ (2.30 ) $ (2.68 ) $ (1.31 ) $ (1.86 ) Three months ended March 31, 2017 June 30, 2017 September 30, 2017 December 31, 2017 (unaudited, dollars in thousands, except for per share data) Net sales $ 203,280 $ 253,590 $ 240,120 $ 195,990 Gross profit $ 45,390 $ 67,670 $ 58,420 $ 36,120 Net income (loss) $ (10,160 ) $ 19,970 $ 6,560 $ (21,140 ) Net income (loss) attributable to Horizon Global $ (9,860 ) $ 20,260 $ 6,890 $ (20,840 ) Net income (loss) per share attributable to Horizon Global: Basic $ (0.41 ) $ 0.80 $ 0.28 $ (0.84 ) Diluted $ (0.41 ) $ 0.79 $ 0.27 $ (0.84 )

General Narrative (Details)

General Narrative (Details)	Jun. 30, 2015shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Outstanding shares distributed as a spinoff, percent	100.00%
Number of TriMas shares per one Horizon share in spinoff	2

New Accounting Pronouncements (

New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ (66,220)		$ 140,400	$ 32,060	$ 2,000
Accounting Standards Update 2018-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				0
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member] | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 70,000
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member] | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 80,000
Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(222,720)		(18,760)	(14,310)	(1,910)
Accumulated Deficit | Accounting Standards Update 2018-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				(900)
Paid-in Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		160,990		159,830	54,800	1,260
Paid-in Capital | Accounting Standards Update 2018-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				340
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 7,760		10,570	$ (8,340)	$ 2,470
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update 2018-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				$ 560
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accumulated Deficit | Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ (900)

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Account Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Receivables, reserves	$ 5.1	$ 3.1

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Account Receivables Factoring (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Amount of receivables sold under factoring arrangements	$ 242.8	$ 257.5
Holdback amount due from factoring institutions	3.1	$ 3.1
Factoring Fees, Receivables Sold	$ 0.7

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Goodwill and Indefinite-Lived Intangibles (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)segmentreporting_unit	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Annual Goodwill Impairment Assessment [Abstract]
Number of reporting units | reporting_unit				3
Number of Reportable Segments | segment				3
Goodwill				$ 12,660	$ 138,190	$ 120,190
Impairment of goodwill and intangible assets				126,770	0	8,360
Goodwill, Impairment Loss				124,660
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				2,100
Horizon Americas
Annual Goodwill Impairment Assessment [Abstract]
Goodwill				4,500	5,280	5,370
Goodwill, Impairment Loss				0
Horizon Asia‑Pacific
Annual Goodwill Impairment Assessment [Abstract]
Goodwill				8,160	6,750	0
Goodwill, Impairment Loss				0
Horizon Europe-Africa
Annual Goodwill Impairment Assessment [Abstract]
Goodwill				0	$ 126,160	$ 114,820
Impairment of goodwill and intangible assets		$ 54,600	$ 43,400	$ 124,660
Goodwill, Impairment Loss	$ 26,600

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Self-insurance (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
General Liability [Member]
Self-insurance coverage [Line Items]
Maximum Retention	$ 750,000	$ 1,000,000
Workers' Compensation [Member]
Self-insurance coverage [Line Items]
Maximum Retention		$ 500,000

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Research and Development Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cost of sales [Member]
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Research and Development Expense	$ 15.5	$ 15.4	$ 10.4

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Shipping and Handling Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selling, General and Administrative Expenses [Member]
Shipping and Handling Costs [Line Items]
Shipping and Handling Costs	$ 19.5	$ 13.3	$ 9.1

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Advertising and Sales Promotion Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selling, General and Administrative Expenses [Member]
Advertising Costs [Line Items]
Advertising Costs	$ 4.4	$ 6.2	$ 6.1

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Foreign Currency Translation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Foreign Currency Translation [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (960)	$ (800)	$ 480
Other Expense, Net [Member]
Foreign Currency Translation [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (1,000)	$ (800)	$ 500

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2018
Building and Land/building improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Land/building improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Machinery and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years

Revenues - Schedule of Net Sale

Revenues - Schedule of Net Sales Disaggregated by Major Sales Channels (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 171,960	$ 227,840	$ 233,340	$ 216,810	$ 195,990	$ 240,120	$ 253,590	$ 203,280	$ 849,950	$ 892,980	$ 649,200
Accounts receivable, net of reserves	$ 108,340				$ 91,770				108,340	$ 91,770
Automotive OEM
Disaggregation of Revenue [Line Items]
Net sales									278,150
Automotive OES
Disaggregation of Revenue [Line Items]
Net sales									117,120
Aftermarket
Disaggregation of Revenue [Line Items]
Net sales									216,710
Retail
Disaggregation of Revenue [Line Items]
Net sales									127,380
Industrial
Disaggregation of Revenue [Line Items]
Net sales									53,850
E-commerce
Disaggregation of Revenue [Line Items]
Net sales									38,790
Other
Disaggregation of Revenue [Line Items]
Net sales									17,950
Horizon Americas
Disaggregation of Revenue [Line Items]
Net sales									390,690
Horizon Americas | Automotive OEM
Disaggregation of Revenue [Line Items]
Net sales									80,300
Horizon Americas | Automotive OES
Disaggregation of Revenue [Line Items]
Net sales									5,610
Horizon Americas | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales									114,450
Horizon Americas | Retail
Disaggregation of Revenue [Line Items]
Net sales									115,920
Horizon Americas | Industrial
Disaggregation of Revenue [Line Items]
Net sales									38,810
Horizon Americas | E-commerce
Disaggregation of Revenue [Line Items]
Net sales									34,220
Horizon Americas | Other
Disaggregation of Revenue [Line Items]
Net sales									1,380
Horizon Europe-Africa
Disaggregation of Revenue [Line Items]
Net sales									323,260
Horizon Europe-Africa | Automotive OEM
Disaggregation of Revenue [Line Items]
Net sales									174,040
Horizon Europe-Africa | Automotive OES
Disaggregation of Revenue [Line Items]
Net sales									50,890
Horizon Europe-Africa | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales									77,190
Horizon Europe-Africa | Retail
Disaggregation of Revenue [Line Items]
Net sales									0
Horizon Europe-Africa | Industrial
Disaggregation of Revenue [Line Items]
Net sales									0
Horizon Europe-Africa | E-commerce
Disaggregation of Revenue [Line Items]
Net sales									4,570
Horizon Europe-Africa | Other
Disaggregation of Revenue [Line Items]
Net sales									16,570
Horizon Asia‑Pacific
Disaggregation of Revenue [Line Items]
Net sales									136,000
Horizon Asia‑Pacific | Automotive OEM
Disaggregation of Revenue [Line Items]
Net sales									23,810
Horizon Asia‑Pacific | Automotive OES
Disaggregation of Revenue [Line Items]
Net sales									60,620
Horizon Asia‑Pacific | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales									25,070
Horizon Asia‑Pacific | Retail
Disaggregation of Revenue [Line Items]
Net sales									11,460
Horizon Asia‑Pacific | Industrial
Disaggregation of Revenue [Line Items]
Net sales									15,040
Horizon Asia‑Pacific | E-commerce
Disaggregation of Revenue [Line Items]
Net sales									0
Horizon Asia‑Pacific | Other
Disaggregation of Revenue [Line Items]
Net sales									$ 0

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Jul. 03, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 13, 2017
Business Acquisition [Line Items]
Brink acquisition ticking fee		$ 5,130	$ 0	$ 0
Brink Group [Member]
Business Acquisition [Line Items]
Equity interest acquired					100.00%
Breakup fees associated with business acquisition		5,500
Financing costs associated with business acquisition		11,000
Brink acquisition ticking fee		$ 5,100
Best Bars [Member]
Business Acquisition [Line Items]
Total consideration	$ 19,600

Acquisitions - Best Bars Schedu

Acquisitions - Best Bars Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 03, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 12,660	$ 138,190	$ 120,190
Best Bars [Member]
Business Acquisition [Line Items]
Cash paid	$ 19,570
Receivables	2,100
Inventories	2,340
Other intangibles	7,690
Prepaid expenses and other current assets	110
Property and equipment	2,250
Accounts payable and accrued liabilities	(1,680)
Deferred income taxes	(2,150)
Total identifiable net assets	10,660
Goodwill	8,910
Total assets acquired, goodwill, and liabilities assumed	$ 19,570

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Balance, beginning			$ 138,190	$ 138,190	$ 120,190
Goodwill from acquisitions					6,990
Impairment				(124,660)
Impairment of goodwill and intangible assets				126,770	0	$ 8,360
Foreign currency translation				(870)	11,010
Balance, ending				12,660	138,190	120,190
Horizon Americas
Goodwill [Roll Forward]
Balance, beginning			5,280	5,280	5,370
Goodwill from acquisitions					0
Impairment				0
Foreign currency translation				(780)	(90)
Balance, ending				4,500	5,280	5,370
Horizon Europe‑Africa
Goodwill [Roll Forward]
Balance, beginning			126,160	126,160	114,820
Goodwill from acquisitions					0
Impairment	$ (26,600)
Impairment of goodwill and intangible assets		$ 54,600	43,400	124,660
Foreign currency translation				(1,500)	11,340
Balance, ending				0	126,160	114,820
Horizon Asia‑Pacific
Goodwill [Roll Forward]
Balance, beginning			$ 6,750	6,750	0
Goodwill from acquisitions					6,990
Impairment				0
Foreign currency translation				1,410	(240)
Balance, ending				$ 8,160	$ 6,750	$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount				$ 199,640	$ 201,530
Impairment of goodwill and intangible assets				126,770	0	$ 8,360
Goodwill, Impairment Loss				124,660
Amortization of intangible assets				8,940	10,410	$ 7,960
Trademarks and Trade Names [Member]
Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount				730	$ 730
Cequent Americas Reportable Segment [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss				0
Horizon Europe-Africa
Goodwill [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount					1.00%
Impairment of goodwill and intangible assets		$ 54,600	$ 43,400	124,660
Goodwill, Impairment Loss	$ 26,600
Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Impairment of goodwill and intangible assets		1,100		$ 1,000
Other Indefinite-lived Intangible Assets	$ 10,900	$ 12,100
Measurement Input, Discount Rate [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Goodwill Impairment, Measurement Input	13.50%	14.00%
Measurement Input, Discount Rate [Member] | Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Goodwill Impairment, Measurement Input	14.50%	15.00%	13.50%
Measurement Input, Terminal Growth Rate [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Goodwill Impairment, Measurement Input	2.50%	2.50%	2.50%
Minimum | Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Royalty Rate	0.50%	0.50%	0.50%
Minimum | Measurement Input, Discount Rate [Member] | Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Goodwill Impairment, Measurement Input			13.50%
Maximum | Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Royalty Rate	1.00%	1.00%	1.00%
Maximum | Measurement Input, Discount Rate [Member] | Trademarks and Trade Names [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Goodwill Impairment, Measurement Input			16.00%
Valuation, Income Approach [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Valuation Method, Actual Weight Allocation, Percentage	75.00%	75.00%
Valuation, Market Approach [Member] | Horizon Europe-Africa
Goodwill [Line Items]
Valuation Method, Actual Weight Allocation, Percentage	25.00%	25.00%

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 199,640	$ 201,530
Finite-lived intangible assets, accumulated amortization	(143,900)	(137,200)
Total finite and indefinite-lived other intangible assets, gross carrying amount	221,950	227,430
Trademarks and Trade Names [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	730	730
Finite-lived intangible assets, accumulated amortization	(250)	(190)
Trademarks and Trade Names [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, accumulated amortization	0
Indefinite-lived intangible assets, gross carrying amount	22,310	25,900
Useful Life Five to Twenty Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	177,910	180,850
Finite-lived intangible assets, accumulated amortization	(127,740)	(121,750)
Useful Life Three to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	21,000	19,950
Finite-lived intangible assets, accumulated amortization	$ (15,910)	$ (15,260)
Minimum | Useful Life Five to Twenty Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Minimum | Useful Life Three to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	3 years
Minimum | Useful Life One To Eight Years [Member] | Trademarks and Trade Names [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	1 year
Maximum | Useful Life Five to Twenty Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	20 years
Maximum | Useful Life Three to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	15 years
Maximum | Useful Life One To Eight Years [Member] | Trademarks and Trade Names [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	8 years

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Other Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	$ 8,940	$ 10,410	$ 7,960
Continuing Operations [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	8,940	10,410	7,960
Continuing Operations [Member] | Cost of sales [Member] | Technology and Other [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	1,840	710	170
Continuing Operations [Member] | Selling, General and Administrative Expenses [Member] | Customer Relationships [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	$ 7,100	$ 9,700	$ 7,790

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Expected Amortization Expense (Details) $ in Thousands	Dec. 31, 2018USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity
2019	$ 8,150
2020	7,890
2021	6,160
2022	5,540
2023	$ 4,970

Inventories, Net (Details)

Inventories, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished goods	$ 112,620	$ 113,740
Work in process	21,470	17,960
Raw materials	55,640	53,950
Total inventories	189,730	185,650
Reserves	(16,040)	(14,150)
Inventories, net	$ 173,690	$ 171,500

Property and Equipment, Net - P

Property and Equipment, Net - Property and Equipment Table (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 183,650	$ 186,680
Less: Accumulated depreciation	81,370	73,660
Property and equipment, net	102,280	113,020
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	460	480
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,440	23,370
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 161,750	$ 162,830

Property and Equipment, Net - D

Property and Equipment, Net - Depreciation Expense Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Depreciation Expense [Line Items]
Depreciation expense	$ 16,440	$ 14,930	$ 10,260
Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	16,440	14,930	10,260
Cost of sales [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	15,110	13,730	8,800
Selling, General and Administrative Expenses [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 1,330	$ 1,200	$ 1,460

Accrued and Other Long-term L_3

Accrued and Other Long-term Liabilities - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities [Abstract]
Customer claims	$ 14,160	$ 2,170
Accrued compensation	10,230	10,360
Customer incentives	10,100	8,800
Restructuring	7,530	3,940
Accrued professional services	4,770	4,140
Deferred purchase price	3,400	1,930
Short-term tax liabilities	1,930	7,700
Cross currency swap	1,610	0
Other	12,090	14,030
Total accrued liabilities	$ 65,820	$ 53,070

Accrued and Other Long-term L_4

Accrued and Other Long-term Liabilities - Long-term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities [Abstract]
Long-term tax liabilities	$ 6,270	$ 13,750
Restructuring	2,580	3,100
Deferred purchase price	30	3,350
Cross currency swap	0	7,830
Other	11,080	10,340
Total other long-term liabilities	$ 19,960	$ 38,370

Long-term Debt - Debt Table (De

Long-term Debt - Debt Table (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 396,080	$ 310,400
Unamortized debt issuance costs and original issuance discount on Term B Loan	7,380	4,940
Unamortized debt issuance costs and discount on the Convertible Notes	24,190	29,870
Current maturities, long-term debt	13,860	16,710
Long-term debt	350,650	258,880
ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	61,570	10,000
Term B Loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	190,520	149,620
Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	125,000	125,000
Unamortized debt issuance costs and discount on the Convertible Notes	24,200	29,900
Long-term debt	100,800	95,100
Bank facilities, capital leases and other long-term debt [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 18,990	$ 25,780

Long-term Debt - Convertible No

Long-term Debt - Convertible Notes (Details)	Feb. 01, 2017USD ($)$ / sharesshares	Dec. 31, 2018USD ($)trading_day	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
Long-term debt, gross		$ 396,080,000	$ 310,400,000
Long-term Debt		350,650,000	258,880,000
Unamortized debt issuance costs and discount on the Convertible Notes		24,190,000	29,870,000
Initial equity component of the 2.75% Convertible Senior Notes due 2022, net of issuance costs and tax			20,010,000
Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt, gross		125,000,000	125,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.75%
Debt instrument, face amount	$ 125,000,000
Convertible Preferred Stock, Shares Issued upon Conversion | shares	5,005,000
Debt Instrument, convertible, conversion price (in usd per share) | $ / shares	$ 24.98
Debt Instrument, Issuance Costs, Debt and Equity Components		3,900,000
Debt Issuance Costs, Net		2,900,000
Long-term Debt		100,800,000	95,100,000
Unamortized debt issuance costs and discount on the Convertible Notes		24,200,000	29,900,000
Initial equity component of the 2.75% Convertible Senior Notes due 2022, net of issuance costs and tax		1,000,000
Debt Instrument, Convertible, Carrying Amount of Equity Component		$ 20,000,000	$ 20,000,000
Convertible Notes Payable [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Convertible, Threshold Trading Days | trading_day		20
Period of trading days used to calculate TSR (in trading days) | trading_day		30
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		130.00%
Convertible Notes Payable [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Period of trading days used to calculate TSR (in trading days) | trading_day		5
Debt Instrument, Convertible, Period After Consecutive Trading Days		5 days
Debt Conversion, Original Debt, Amount		$ 1,000
Debt Instrument, Convertible, Ratio of Trading Price Per 1000 Principal Amount		98.00%
Convertible Note Hedge [Member]
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Warrants or Options Issued | shares	5,005,000
Debt Instrument, Convertible, Stock Price Trigger | $ / shares	$ 24.98
Derivative, premium paid	$ 29,000,000
Derivative, Cost of Hedge Net of Cash Received	7,500,000
Equity Issuance Cost	$ 700,000
Warrant
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Warrants or Options Issued | shares	5,005,000
Debt Instrument, Convertible, Stock Price Trigger | $ / shares	$ 29.60
Proceeds from Issuance of Warrants	$ 21,500,000
Equity Issuance Cost	$ 600,000
Fair Value, Inputs, Level 2 [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value		$ 68,200,000

Long-term Debt - Schedule of In

Long-term Debt - Schedule of Interest and Amortization on Convertible Debt (Details) - Convertible Notes Payable [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Contractual interest coupon on convertible debt	$ 3,490	$ 3,190
Amortization of debt issuance costs	530	490
Amortization of equity discount related to debt	$ 5,150	$ 4,380

Long-term Debt - ABL Facility (

Long-term Debt - ABL Facility (Details)	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 22, 2015USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 350,650,000	$ 258,880,000
ABL Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 99,000,000
Letter of credit, maximum borrowing capacity	$ 20,000,000
Credit facility, unused capacity fee percentage	0.25%
Credit facility, fronting fee percentage	0.125%
Fixed charge coverage ratio	1
Payments of debt issuance costs	$ 2,500,000
Amortization of debt issuance costs	500,000
Unamortized debt issuance costs	$ 800,000	$ 1,300,000
Long-term Debt, Weighted Average Interest Rate, at Point in Time	4.40%	3.60%
Letters of credit, outstanding	$ 3,400,000	$ 6,300,000
Credit facility, remaining borrowing capacity	10,300,000	$ 58,500,000
ABL Facility [Member] | U.S. sub-facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	94,000,000
ABL Facility [Member] | Canadian sub-facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	2,000,000
ABL Facility [Member] | U.K. sub-facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 3,000,000

Long-term Debt - Term Loan (Det

Long-term Debt - Term Loan (Details)	Jul. 31, 2018USD ($)	Jun. 14, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018USD ($)Rate	Dec. 31, 2017USD ($)Rate	Dec. 31, 2016USD ($)	Feb. 16, 2018USD ($)	Sep. 19, 2016USD ($)	Jun. 30, 2015USD ($)
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ 0	$ (4,640,000)	$ 0
Term B Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount									$ 152,000,000	$ 200,000,000
Incremental debt commitments capacity					$ 75,000,000
Net leverage ratio					3.50
Payments of debt issuance costs				$ 2,400,000
Debt Instrument, Other Transaction Fees					$ 6,100,000
Amortization of debt issuance costs					2,100,000	1,600,000	$ 1,600,000
Term loan, aggregate amount outstanding					$ 190,500,000	$ 149,600,000
Debt instrument, interest rate, effective percentage					8.80%	6.07%
Debt instrument, unamortized discount and debt issuance cost					$ 7,400,000	$ 4,900,000
Long-term debt, fair value, percentage of par value | Rate					92.20%	101.40%
Repayments of Debt			$ 177,000,000
Loss on extinguishment of debt			$ (4,600,000)
Term B Loan [Member] | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					3.50%
Term B Loan [Member] | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					4.50%
Debt instrument, interest rate floor					1.00%
Term B Loan Amendment
Debt Instrument [Line Items]
Increase in interest rate					1.50%
Debt instrument, periodic principal payment					$ 2,600,000
2018 Replacement Term Loan Amendment [Member]
Debt Instrument [Line Items]
Debt instrument, face amount								$ 385,000,000
Debt Instrument, Breakage Fees		$ 5,500,000
Debt Instrument, Transaction Fees					5,500,000
Debt Instrument, Financing Costs					5,100,000
2018 Term B Loan [Member]
Debt Instrument [Line Items]
Incremental debt commitments capacity	$ 50,000,000
Debt Issuance Costs, Net					$ 4,600,000
Debt instrument, periodic principal payment	$ 2,600,000
Debt instrument, periodic payment, percentage of excess cash flow	75.00%
2018 Term B Loan [Member] | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	5.00%
2018 Term B Loan [Member] | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	6.00%
Debt instrument, interest rate floor	1.00%
Debt Instrument, Covenant One | 2018 Term B Loan [Member]
Debt Instrument [Line Items]
Net leverage ratio	7
Debt Instrument, Covenant Two | 2018 Term B Loan [Member]
Debt Instrument [Line Items]
Net leverage ratio	6.50
Debt Instrument, Covenant Three | 2018 Term B Loan [Member]
Debt Instrument [Line Items]
Net leverage ratio	5
Debt Instrument, Covenant Four | 2018 Term B Loan [Member]
Debt Instrument [Line Items]
Net leverage ratio	4.75
Debt Instrument, Covenant Five | 2018 Term B Loan [Member]
Debt Instrument [Line Items]
Net leverage ratio	4.50

Long-term Debt - Bank facilitie

Long-term Debt - Bank facilities (Details)	Jul. 03, 2017USD ($)sub_facility	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 22, 2015USD ($)
Australia Loans [Member]
Short-term Debt [Line Items]
Short-term debt		$ 2,900,000	$ 6,600,000
Australian Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Working Capital Coverage Ratio Required, Minimum	1.75
Debt Instrument, Covenant, Gearing Ratio, Maximum	0.5
ABL Facility [Member]
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity				$ 99,000,000
Australian Loan, Facility A [Member]
Short-term Debt [Line Items]
Credit facility, maximum borrowing capacity	$ 18,300,000
Australian Loan, Facility B [Member] | Bank Bid Swap Bill Rate [Member]
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Austrailian Facilities [Member] | ABL Facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Number of New Sub Facilities | sub_facility	2
Debt Instrument, Covenant One | Australian Loan [Member]
Short-term Debt [Line Items]
Net leverage ratio	1.50
Debt Instrument, Covenant One | Australian Loan, Facility A [Member] | Bank Bid Swap Bill Rate [Member]
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.10%
Debt Instrument, Covenant Two | Australian Loan [Member]
Short-term Debt [Line Items]
Net leverage ratio	2
Debt Instrument, Covenant Two | Australian Loan, Facility A [Member] | Bank Bid Swap Bill Rate [Member]
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.20%
Debt Instrument, Covenant Three | Australian Loan [Member]
Short-term Debt [Line Items]
Net leverage ratio	2.50
Debt Instrument, Covenant Three | Australian Loan, Facility A [Member] | Bank Bid Swap Bill Rate [Member]
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.30%
Debt Instrument, Covenant Four | Australian Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Covenant, Leverage Ratio, Maximum	2.50
Debt Instrument, Covenant Five | Australian Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Covenant, Leverage Ratio, Maximum	2

Long-term Debt - Long-term Debt

Long-term Debt - Long-term Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Long-term Debt, Fiscal Year Maturity
2018	$ 13,860
2019	76,890
2020	170,000
2021	125,000
2022	0
Thereafter	10,330
Total	$ 396,080	$ 310,400

Derivative Instruments - Deriva

Derivative Instruments - Derivative Narrative (Details) € in Millions, $ in Millions, $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018NZD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2018AUD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018NZD ($)	Dec. 31, 2018EUR (€)	May 31, 2018EUR (€)
Intercompany Loan [Member]
Derivative [Line Items]
Intercompany loan							$ 10	€ 110
Foreign currency forward contracts [Member]
Derivative [Line Items]
Gain (loss) on de-designated derivatives	$ 0.3				$ 0	$ 0.3
Foreign currency forward contracts [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, notional amount	$ 23.8
Foreign currency forward contracts [Member] | Designated as hedging instrument [Member]
Derivative [Line Items]
Derivative, gain (loss) reclassification from AOCI to income, estimate of time to transfer	12 months	12 months	12 months	12 months
Derivative, gain (loss) reclassification from AOCI to income, estimated net amount to be transferred	$ 2
Cross currency swap [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	2.5
Gain (loss) on de-designated derivatives	0.2
Cross currency swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, notional amount	$ 110
Derivative hedge, periodic principle payment | €			€ 1.4
Derivative liability hedge, fixed interest rate	5.40%						5.40%	5.40%
Derivative hedge, periodic principle receipt	$ 1.5
Derivative asset hedge, fixed interest rate	7.20%						7.20%	7.20%
Cross currency swap [Member] | Designated as hedging instrument [Member]
Derivative [Line Items]
Derivative, gain (loss) reclassification from AOCI to income, estimate of time to transfer	12 months	12 months	12 months	12 months
Derivative, gain (loss) reclassification from AOCI to income, estimated net amount to be transferred	$ 0.1
Forward Contracts [Member]
Derivative [Line Items]
Derivative, amount offset against liability	0.9
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	0.6
NZD Currency Swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, notional amount	$ 3.4
Derivative hedge, periodic principle payment		$ 0.8
Derivative Liability, Marginal Interest Rate	0.31%						0.31%	0.31%
Derivative hedge, periodic principle receipt				$ 0.8
Brink Group [Member] | Foreign currency forward contracts [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, notional amount | €									€ 63.4
Gain (loss) on de-designated derivatives	$ 1.2

Derivative Instruments - Design

Derivative Instruments - Designated as hedging, Financial Position (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Total derivatives	$ (370)	$ 8,390
Designated as hedging instrument [Member]
Derivatives, Fair Value [Line Items]
Total derivatives	(570)	(8,500)
Not designated as hedging instrument [Member]
Derivatives, Fair Value [Line Items]
Total derivatives	200	110
Foreign currency forward contracts [Member] | Designated as hedging instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	1,910	0
Foreign currency forward contracts [Member] | Designated as hedging instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	(670)
Foreign currency forward contracts [Member] | Not designated as hedging instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	290	110
Foreign currency forward contracts [Member] | Not designated as hedging instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	(90)
Cross currency swap [Member] | Designated as hedging instrument [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	(2,480)	0
Cross currency swap [Member] | Designated as hedging instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	(7,830)
Cross currency swap [Member] | Not designated as hedging instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	(90)	0
Cross currency swap [Member] | Not designated as hedging instrument [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 0	$ 90

Derivative Instruments - Desi_2

Derivative Instruments - Designated as hedging, Financial Performance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)	$ 1,960	$ (310)	$ (930)	$ (710)
Designated as hedging instrument [Member] | Foreign currency forward contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)	1,870	(580)
Designated as hedging instrument [Member] | Foreign currency forward contracts [Member] | Cost of sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Earnings	1,070	940	(1,620)
Designated as hedging instrument [Member] | Cross currency swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)	90	270
Designated as hedging instrument [Member] | Cross currency swap [Member] | Other expense, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Earnings	$ 5,330	$ (15,820)	$ 7,510

Derivative Instruments - Fair V

Derivative Instruments - Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Foreign currency forward contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ (2,200)	$ (650)
Foreign currency forward contracts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	0	0
Foreign currency forward contracts [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	(2,200)	(650)
Foreign currency forward contracts [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	0	0
Cross currency swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	(2,570)	(7,740)
Cross currency swap [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Cross currency swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	(2,570)	(7,740)
Cross currency swap [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 0	$ 0

Restructuring - Restructuring R

Restructuring - Restructuring Reserve Rollforward (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Restructuring Reserve [Roll Forward]
Balances at December 31, 2017	$ 7,040
Restructuring charges	13,120
Payments and other(1)	(10,050)
Balances at December 31, 2018	10,110
Employee Costs
Restructuring Reserve [Roll Forward]
Balances at December 31, 2017	1,850
Restructuring charges	10,440
Payments and other(1)	(7,300)
Balances at December 31, 2018	4,990
Facility Closure and Other Costs
Restructuring Reserve [Roll Forward]
Balances at December 31, 2017	5,190
Restructuring charges	2,680
Payments and other(1)	(2,750)
Balances at December 31, 2018	5,120
Accrued Liabilities [Member]
Restructuring Reserve [Roll Forward]
Balances at December 31, 2018	7,500
Other Noncurrent Liabilities [Member]
Restructuring Reserve [Roll Forward]
Balances at December 31, 2018	$ 2,600

Restructuring - Additional Info

Restructuring - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 10,110	$ 7,040
Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	7,500
Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 2,600

Commitments (Details)

Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Rent expense	$ 21,800	$ 20,000	$ 16,800
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019	15,820
2020	14,790
2021	12,590
2022	7,900
2023	4,830
Thereafter	13,090
Total	$ 69,020

Contingencies (Details)

Contingencies (Details) $ in Millions	Dec. 31, 2018USD ($)
Loss Contingencies [Line Items]
Loss contingency liability	$ 12.3
Asset recorded associated with loss contingency accrual	10.8
Minimum
Loss Contingencies [Line Items]
Estimate of possible loss	12.3
Maximum
Loss Contingencies [Line Items]
Estimate of possible loss	$ 20

Earnings (Loss) Per Share - Rec

Earnings (Loss) Per Share - Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share Attributable to Horizon Global (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income	$ (46,760)	$ (32,760)	$ (66,930)	$ (57,510)	$ (20,840)	$ 6,890	$ 20,260	$ (9,860)	$ (203,960)	$ (3,550)	$ (12,360)
Weighted average common shares—basic (in shares)									25,053,013	24,781,349	18,775,500
Dilutive effect of stock-based awards (in shares)									0	0	0
Weighted average shares outstanding, diluted (in shares)									25,053,013	24,781,349	18,775,500
Basic earnings per share attributable to Horizon Global (in usd per share)	$ (1.86)	$ (1.31)	$ (2.68)	$ (2.30)	$ (0.84)	$ 0.28	$ 0.80	$ (0.41)	$ (8.14)	$ (0.14)	$ (0.66)
Diluted earnings per share attributable to Horizon Global (in usd per share)	$ (1.86)	$ (1.31)	$ (2.68)	$ (2.30)	$ (0.84)	$ 0.27	$ 0.79	$ (0.41)	$ (8.14)	$ (0.14)	$ (0.66)

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Antidilutive Securities (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	240,647	343,782	331,485
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	646,336	584,335	526,751
Convertible Notes Payable [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	5,005,000	4,566,205	0
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	5,005,000	4,566,205	0
Minimum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price of options (in usd per share)	$ 9.20	$ 9.20	$ 9.20
Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price of options (in usd per share)	$ 11.29	$ 11.29	$ 11.29

Earnings (Loss) Per Share - Add

Earnings (Loss) Per Share - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 01, 2017	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Common stock, issued shares		25,866,747	25,625,571
Public Stock Offering
Subsidiary, Sale of Stock [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	4,600,000
Sale of Stock, Price Per Share	$ 18.50
Sale of Stock, Consideration Received on Transaction	$ 79.9
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	600,000

Equity Awards - Equity Awards N

Equity Awards - Equity Awards Narrative (Details)	Dec. 31, 2018shares
Horizon 2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Approved for Issuance	4,400,000

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Apr. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, authorized shares	100,000,000	100,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, outstanding shares	0	0
Common stock, authorized shares	400,000,000	400,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued shares	25,866,747	25,625,571
Treasury stock, outstanding shares	686,506	686,506
Common stock, outstanding shares	25,180,241	24,939,065
Average purchase price for treasury stock	$ 14.55
Share Repurchase Program [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Number of shares authorized to be repurchased			1,500,000

Equity Awards - Stock Options N

Equity Awards - Stock Options Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Aggregate Intrinsic Value			$ 0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 300,000	$ 800,000

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Beginning Balance, Derivative Instruments	$ (310)	$ (930)	$ (710)
Net unrealized gains (losses) arising during the period, Derivative Instruments	7,440	(8,810)	3,170
Less: Net realized gains reclassified to net income, Derivative Instruments	5,170	(9,350)	3,390
Net current-period change, Derivative Instruments	2,270	540	(220)
Ending Balance, Derivative Instruments	1,960	(310)	(930)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Beginning Balance, Foreign Currency Translation	10,880	(7,410)	3,180
Net unrealized losses arising during the period, Foreign Currency Translation	(5,080)	17,810	(10,590)
Less: Net realized gains reclassified to net income, Foreign Currency Translation	0	0	0
Net current-period change, Foreign Currency Translation	(5,080)	17,810	(10,590)
Ending Balance, Foreign Currency Translation	5,800	10,880	(7,410)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance	10,570	(8,340)	2,470
Net unrealized gains (losses) arising during the period	2,360	9,000	(7,420)
Less: Net realized gains reclassified to net income	5,170	(9,350)	3,390
Net current-period change	(2,810)	18,350	(10,810)
Ending Balance	7,760	10,570	(8,340)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	(1,400)	5,200	(2,500)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	1,300	5,500	$ (2,500)
Previously Reported
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Beginning Balance, Derivative Instruments	(390)
Ending Balance, Derivative Instruments		(390)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Beginning Balance, Foreign Currency Translation	10,400
Ending Balance, Foreign Currency Translation		10,400
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance	10,010
Ending Balance		10,010
Restatement Adjustment
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Beginning Balance, Derivative Instruments	80
Ending Balance, Derivative Instruments		80
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Beginning Balance, Foreign Currency Translation	480
Ending Balance, Foreign Currency Translation		480
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance	$ 560
Ending Balance		$ 560

Equity Awards - Stock Option Ac

Equity Awards - Stock Option Activity Table (Details)	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options Outstanding, beginning balance | shares	338,349
Number of Options Granted | shares	0
Number of Options Exercised | shares	0
Number of Options Cancelled | shares	(245,382)
Number of Options Expired | shares	0
Number of Options Outstanding, ending balance | shares	92,967
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options Outstanding, Weighted Average Price, beginning | $ / shares	$ 10.38
Exercise price, Weighted Average Price | $ / shares	0
Options Exercised, Weighted Average Price | $ / shares	0
Options Cancelled, Weighted Average Price | $ / shares	10.37
Options Expired, Weighted Average Price | $ / shares	0
Options Outstanding, Weighted Average Price, ending | $ / shares	$ 10.40
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures
Options Average Remaining Contractual Life (Years)	4 years 7 months
Options Aggregate Intrinsic Value | $	$ 0

Equity Awards - Restricted Shar

Equity Awards - Restricted Shares Narrative (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesRateshares	Dec. 31, 2017USD ($)$ / sharesRateshares	Dec. 31, 2016USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost | $	$ 1.6
Restricted Stock And Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	477,963	185,423
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	477,963
Period of trading days used to calculate TSR (in trading days)	20
Period for Recognition of Share-based Compensation Cost Not yet Recognized	1 year 9 months
Restricted shares-based compensation expense | $	$ 1.6	$ 3.3	$ 3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 7.43
Market-based restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | Rate	2.34%	1.52%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | Rate	37.40%	38.50%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 7.08	$ 18.41
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent attainment range | Rate	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percent attainment range | Rate	200.00%
Share-based Compensation Award, Tranche One [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	5,680	22,449
Share-based Compensation Award, Tranche Two [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	43,799	50,416
Share-based Compensation Award, Tranche Three [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	101,204	72,865
Share-based Compensation Award, Tranche Four [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	145,003	33,426
Share-based Compensation Award, Tranche Five [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	43,416	6,267
Share-based Compensation Award, Tranche Six [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	17,575
Share-based Compensation Award, Tranche Seven [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	84,210
Share-based Compensation Award, Tranche Eight [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	11,404
Share-based Compensation Award, Tranche Nine [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	14,472
Share-based Compensation Award, Tranche Ten [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	8,400
Share-based Compensation Award, Tranche Eleven [Member] | Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	2,800

Equity Awards - Restricted Sh_2

Equity Awards - Restricted Shares Activity Table (Details) - Restricted Shares [Member]	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Unvested Restricted Shares Outstanding, beginning balance | shares	582,611
Number of Unvested Restricted Shares Granted | shares	477,963
Number of Unvested Restricted Shares Vested | shares	(331,456)
Number of Unvested Restricted Shares Cancelled | shares	(309,190)
Number of Unvested Restricted Shares Outstanding, ending balance | shares	419,928
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested Restricted Shares Outstanding, Weighted Average Grant Date Fair Value, beginning | $ / shares	$ 13.51
Unvested Restricted Shares Granted, Weighted Average Grant Date Fair Value | $ / shares	7.43
Unvested Restricted Shares Vested, Weighted Average Grant Date Fair Value | $ / shares	11.67
Unvested Restricted Shares Cancelled, Weighted Average Grant Date Fair Value | $ / shares	11.12
Unvested Restricted Shares Outstanding, Weighted Average Grant Date Fair Value, ending | $ / shares	$ 9.75

Segment Information (Details)

Segment Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment	3
Operating Profit (Loss)	$ (170,390)	$ 34,760	$ 6,300
Capital Expenditures	13,870	27,290	14,540
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	849,950	892,980	649,200
Operating Profit (Loss)	(170,390)	34,760	6,300
Capital Expenditures	13,870	27,290	14,540
Depreciation and Amortization	25,380	25,340	18,220
Horizon Americas | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	390,690	439,700	443,240
Operating Profit (Loss)	(6,850)	44,060	38,680
Capital Expenditures	6,760	10,150	5,550
Depreciation and Amortization	8,160	10,660	10,750
Cequent Asia Pacific [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	136,000	127,310	101,880
Operating Profit (Loss)	20,250	18,740	11,230
Capital Expenditures	2,610	2,440	3,310
Depreciation and Amortization	4,800	4,310	4,090
Horizon Europe Africa Reportable Segment [Member] [Domain] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	323,260	325,970	104,080
Operating Profit (Loss)	(148,630)	(1,790)	(13,320)
Capital Expenditures	4,500	13,190	4,670
Depreciation and Amortization	12,090	10,110	3,290
Corporate [Member] | Continuing Operations [Member]
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(35,160)	(26,250)	(30,290)
Capital Expenditures	0	1,510	1,010
Depreciation and Amortization	$ 330	$ 260	$ 90

Segment Information Operating N

Segment Information Operating Net Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	$ 521,350	$ 661,030
Continuing Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	102,280	113,020
Continuing Operations [Member] | Horizon Americas
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	219,680	209,210
Continuing Operations [Member] | Cequent Asia Pacific [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	119,590	88,210
Continuing Operations [Member] | Horizon Europe Africa Reportable Segment [Member] [Domain]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	173,980	341,750
Continuing Operations [Member] | Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	$ 8,100	$ 21,860

Segment Information Revenues an

Segment Information Revenues and Operating Net Assets by Geographical Areas (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 171,960	$ 227,840	$ 233,340	$ 216,810	$ 195,990	$ 240,120	$ 253,590	$ 203,280	$ 849,950	$ 892,980	$ 649,200
Operating Net Assets	521,350				661,030				521,350	661,030
Continuing Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									849,950	892,980	649,200
Operating Net Assets	102,280				113,020				102,280	113,020
Continuing Operations [Member] | Total U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									380,480	423,090	428,770
Operating Net Assets	26,560				5,770				26,560	5,770
Continuing Operations [Member] | Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									69,440	69,760	60,020
Operating Net Assets	8,480				10,730				8,480	10,730
Continuing Operations [Member] | GERMANY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									186,430	194,120	52,350
Operating Net Assets	43,010				48,400				43,010	48,400
Continuing Operations [Member] | UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Net Assets	620				22,920				620	22,920
Continuing Operations [Member] | Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									117,960	114,940	39,520
Operating Net Assets	8,820				9,830				8,820	9,830
Continuing Operations [Member] | Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									67,420	58,140	41,940
Operating Net Assets	7,370				7,720				7,370	7,720
Continuing Operations [Member] | Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									19,880	16,320	12,130
Operating Net Assets	5,320				5,260				5,320	5,260
Continuing Operations [Member] | Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									8,340	16,610	14,470
Operating Net Assets	2,100				2,390				2,100	2,390
Continuing Operations [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									469,470	469,890	$ 220,430
Operating Net Assets	$ 75,720				$ 107,250				$ 75,720	$ 107,250

Segment Information Narrative (

Segment Information Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Segment Reporting [Abstract]
Number of Operating Segments | segment	3
Export Sales from the United States of America | $	$ 44.3	$ 34.6	$ 32.6

Segment Information Net Sales b

Segment Information Net Sales by Product Group (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales (as a percent)	100.00%	100.00%	100.00%
Towing [Member]
Segment Reporting Information [Line Items]
Net Sales (as a percent)	68.50%	70.30%	62.70%
Trailering [Member]
Segment Reporting Information [Line Items]
Net Sales (as a percent)	16.10%	16.80%	21.50%
Cargo Management [Member]
Segment Reporting Information [Line Items]
Net Sales (as a percent)	6.20%	6.30%	8.90%
Other
Segment Reporting Information [Line Items]
Net Sales (as a percent)	9.20%	6.60%	6.90%

Income Taxes Income Tax by Juri

Income Taxes Income Tax by Jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ (43,200)	$ (3,880)	$ (14,630)
Income (Loss) from Continuing Operations before Income Taxes, Foreign	(168,060)	8,860	(1,760)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	$ (211,260)	$ 4,980	$ (16,390)

Income Taxes Summary of Income

Income Taxes Summary of Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax benefit (expense):
Federal	$ 10,070	$ (7,680)	$ (1,170)
State and local	(190)	(240)	(970)
Foreign	(7,880)	(2,190)	(2,560)
Total current income tax expense	2,000	(10,110)	(4,700)
Deferred income tax benefit (expense):
Federal	(1,870)	(3,000)	3,800
State and local	160	(390)	450
Foreign	6,070	3,750	4,180
Total deferred income tax benefit	4,360	360	8,430
Income tax benefit (expense)	$ 6,360	$ (9,750)	$ 3,730

Income Taxes Income Tax Expense

Income Taxes Income Tax Expense Reconciliation to Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	21.00%	35.00%	35.00%
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 44,360	$ (1,740)	$ 5,730
Income Tax Reconciliation, State and Local Income Taxes	1,500	(340)	(340)
Income Tax Reconciliation, Foreign Income Tax Rate Differential	13,180	3,680	1,230
Income Tax Reconciliation, Tax Contingencies	2,680	3,950	1,260
Income Tax Reconciliation, Tax Holidays	0	950	460
Income Tax Reconciliation, Tax Withholding	(990)	(300)	(300)
Income Tax Reconciliation, Noncontrolling Interest Income (Expense)	3,980	590	(70)
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(19,210)	(3,020)	(1,600)
Income Tax Reconciliation, Transaction Costs	0	(1,610)	(2,670)
Income Tax Reconciliation, Change in Enacted Tax Rate	(2,280)	(11,850)	0
Effective Income Tax Rate Reconciliation, Goodwill	(36,580)	0	0
Other, net	(280)	(60)	30
Income tax benefit (expense)	$ 6,360	$ (9,750)	$ 3,730

Income Taxes Components of Defe

Income Taxes Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 980	$ 460
Deferred Tax Assets, Inventory	3,610	3,280
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	10,410	10,600
Deferred Tax Assets, Operating Loss and Credit Carryforwards	26,720	12,930
Deferred Tax Assets, Gross	41,720	27,270
Deferred Tax Assets, Valuation Allowance	(26,650)	(10,560)
Deferred Tax Assets, Net of Valuation Allowance	15,070	16,710
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(5,470)	(4,300)
Deferred Tax Liabilities, Intangible Assets	(18,670)	(19,710)
Deferred Tax Liabilities, Other	(2,390)	(3,280)
Deferred Tax Liabilities, Gross	(26,530)	(27,290)
Deferred Tax Liabilities, Net	$ (11,460)	$ (10,580)

Income Taxes Operating Loss Car

Income Taxes Operating Loss Carryforwards Narrative (Details) $ in Millions	Dec. 31, 2018USD ($)
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 23.2
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 75.4

Income Taxes Narrative (Details

Income Taxes Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 26,650	$ 10,560
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense		11,900
Unrecognized Tax Benefits	5,660	$ 7,310	$ 8,850
Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)	2,300
Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	8,800
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 5,700

Income Taxes Unrecognized Tax B

Income Taxes Unrecognized Tax Benefits Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 5,660	$ 7,310	$ 8,850
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,400	2,100
Unrecognized Tax Benefits, Income Tax Penalties and Interest Payable	1,400	$ 3,400
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits expected to be released in next twelve months	$ 800

Income Taxes Unrecognized Tax_2

Income Taxes Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning	$ 7,310	$ 8,850
Tax positions related to current year:
Additions	0	0
Reductions	0	0
Tax positions related to prior years:
Additions	270	50
Reductions	0	(30)
Settlements	0
Lapses in the statutes of limitations	(1,580)	(2,110)
Cumulative Translation Adjustment		550
Cumulative Translation Adjustment	(340)
Unrecognized Tax Benefits, Ending	$ 5,660	$ 7,310

Other Expenses, Net (Details)

Other Expenses, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Brink acquisition ticking fee	$ 5,130	$ 0	$ 0
Brazil acquisition indemnification asset	4,300	1,520	1,500
Customer pay discounts	1,600	1,540	1,210
Foreign currency (gain) / loss	960	800	(480)
Accretion arising from lease recovery	240	270	320
Gain on sale of Broom & Brush	0	(1,300)	0
Currency option premium purchase	0	0	840
Other	900	(100)	(780)
Total other expense, net	$ 13,130	$ 2,730	$ 2,610

Summary Quarterly Financial D_3

Summary Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 171,960	$ 227,840	$ 233,340	$ 216,810	$ 195,990	$ 240,120	$ 253,590	$ 203,280	$ 849,950	$ 892,980	$ 649,200
Gross Profit	14,240	43,620	47,570	38,450	36,120	58,420	67,670	45,390	143,880	207,600	160,350
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	(46,980)	(33,000)	(67,160)	(57,760)	(21,140)	6,560	19,970	(10,160)
Net income (loss) attributable to Horizon Global	$ (46,760)	$ (32,760)	$ (66,930)	$ (57,510)	$ (20,840)	$ 6,890	$ 20,260	$ (9,860)	$ (203,960)	$ (3,550)	$ (12,360)
Net loss per share attributable to Horizon Global:
Net income (loss) per share attributable to Horizon Global, Basic (in usd per share)	$ (1.86)	$ (1.31)	$ (2.68)	$ (2.30)	$ (0.84)	$ 0.28	$ 0.80	$ (0.41)	$ (8.14)	$ (0.14)	$ (0.66)
Net income (loss) per share attributable to Horizon Global, Diluted (in usd per share)	$ (1.86)	$ (1.31)	$ (2.68)	$ (2.30)	$ (0.84)	$ 0.27	$ 0.79	$ (0.41)	$ (8.14)	$ (0.14)	$ (0.66)

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - USD ($)	Mar. 15, 2019	Mar. 01, 2019	Feb. 20, 2019
Subsequent Event [Line Items]
Debt issuance and amendment costs	$ 10,000,000
Warrant
Subsequent Event [Line Items]
Warrants available for issuance	6,250,000
Term of warrants available for issuance	5 years
Strike price of warrants (in usd per share)	$ 1.50
Preferred stock paid-in kind rate	18.00%
Senior Term Loan | Line of Credit
Subsequent Event [Line Items]
Aggregate principal amount			$ 10,000,000
Second Lien Term Loan
Subsequent Event [Line Items]
Aggregate principal amount	$ 51,000,000
Debt instrument, basis spread on variable rate	11.50%
Second Lien Term Loan | Debt Instrument, Covenant One
Subsequent Event [Line Items]
Net leverage ratio	6.75
Second Lien Term Loan | Debt Instrument, Covenant Two
Subsequent Event [Line Items]
Net leverage ratio	5.25
Sixth Term Amendment
Subsequent Event [Line Items]
Paid-in kind interest rate	3.00%
Minimum capital raised	$ 100,000,000
Sixth Term Amendment | Debt Instrument, Covenant One
Subsequent Event [Line Items]
Net leverage ratio	8.25
Minimum liquidity covenant amount	$ 15,000,000
Maximum capital expenditures covenant amount	$ 15,000,000
Sixth Term Amendment | Debt Instrument, Covenant Two
Subsequent Event [Line Items]
Net leverage ratio	6.25
Maximum capital expenditures covenant amount	$ 25,000,000
Sixth Term Amendment | Debt Instrument, Covenant Three
Subsequent Event [Line Items]
Net leverage ratio	5.50
Sixth Term Amendment | Debt Instrument, Covenant Four
Subsequent Event [Line Items]
Net leverage ratio	5
Sixth Term Amendment | Debt Instrument, Covenant Five
Subsequent Event [Line Items]
Net leverage ratio	4.75
Sixth ABL Amendment
Subsequent Event [Line Items]
Increase in interest rate	1.00%
Credit facility, maximum borrowing capacity	$ 90,000,000
Horizon Europe-Africa
Subsequent Event [Line Items]
Proceeds from sale of non-automotive business assets		$ 5,500,000

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
BALANCE AT BEGINNING OF PERIOD	$ 3,100	$ 3,810	$ 2,960
ADDITIONS CHARGED TO COSTS AND EXPENSES	920	640	910
ADDITIONS CHARGED (CREDITED) TO OTHER ACCOUNTS	1,200	(1,340)	50
DEDUCTIONS	80	10	110
BALANCE AT END OF PERIOD	$ 5,140	$ 3,100	$ 3,810