Core Molding (CMT) 10-Q 18 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2019	Nov. 15, 2019
Entity Information [Line Items]
Entity Registrant Name	CORE MOLDING TECHNOLOGIES INC.
Entity Central Index Key	0001026655
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		8,269,080
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Deferred Tax Liabilities, Net	$ 1,153,000
Current assets:
Cash and cash equivalents	0	$ 1,891,000
Accounts receivable, net	45,846,000	45,468,000
Inventory, Net	23,413,000	25,765,000
Costs in Excess of Billings, Current	1,061,000	3,915,000
Prepaid expenses and other current assets	5,829,000	7,178,000
Total current assets	75,088,000	80,302,000
Operating Lease, Right-of-Use Asset, Noncurrent	4,823,000	0
Property, Plant and Equipment, Net	80,428,000	80,657,000
Goodwill	17,376,000	21,476,000
Intangible Assets, Net (Excluding Goodwill)	13,952,000	15,413,000
Other Assets, Noncurrent	3,371,000	3,350,000
Total Assets	195,038,000	201,198,000
Current liabilities:
Revolving line of credit	0	17,375,000
Current portion of long-term debt	38,220,000	3,230,000
Line of Credit, Current	20,817,000	0
Accounts payable	22,481,000	25,450,000
Tooling in progress	1,344,000	1,686,000
Accrued liabilities:
Compensation and related benefits	6,241,000	5,154,000
Other	7,009,000	6,357,000
Total current liabilities	94,768,000	40,191,000
Operating Lease, Liability, Noncurrent	3,445,000	0
Long-term debt	0	37,784,000
Post retirement benefits liability	6,906,000	6,919,000
Total Liabilities	105,119,000	102,269,000
Stockholders' Equity:
Preferred stock — $0.01 par value, authorized shares — 10,000,000; no shares outstanding at September 30, 2019 and December 31, 2018	0	0
Common stock — $0.01 par value, authorized shares – 20,000,000; outstanding shares: 7,854,736 at September 30, 2019 and 7,776,164 December 31, 2018	79,000	78,000
Paid-in capital	34,472,000	33,208,000
Accumulated other comprehensive income, net of income taxes	1,663,000	2,117,000
Treasury stock	(28,463,000)	(28,403,000)
Retained earnings	82,168,000	91,929,000
Total Stockholders' Equity	89,919,000	98,929,000
Total Liabilities and Stockholders' Equity	195,038,000	201,198,000
Commitments and Contingencies	$ 0	$ 0

Consolidated Balance Sheets - P

Consolidated Balance Sheets - Parenthetical - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common Stock, Shares, Outstanding	7,854,736	7,776,164
Treasury Stock, Shares	3,798,052	3,790,308

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 74,655,000	$ 64,676,000	$ 228,168,000	$ 196,324,000
Cost of Revenue	68,171,000	59,813,000	210,043,000	175,679,000
Gross margin	6,484,000	4,863,000	18,125,000	20,645,000
Selling, General and Administrative Expense	7,041,000	6,349,000	21,431,000	19,587,000
Other General Expense	11,141,000	6,349,000	25,531,000	19,587,000
Goodwill, Impairment Loss	4,100,000	0	4,100,000	0
Operating Income (Loss)	(4,657,000)	(1,486,000)	(7,406,000)	1,058,000
Interest Expense	1,113,000	632,000	2,878,000	1,705,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(23,000)	(12,000)	(71,000)	(36,000)
Other Nonoperating Income (Expense)	1,090,000	620,000	2,807,000	1,669,000
Income before income taxes	(5,747,000)	(2,106,000)	(10,213,000)	(611,000)
Income Tax Expense (Benefit)	378,000	(304,000)	(452,000)	228,000
Net income	$ (6,125,000)	$ (1,802,000)	$ (9,761,000)	$ (839,000)
Net income per common share:
Earnings Per Share, Basic	$ (0.78)	$ (0.23)	$ (1.25)	$ (0.11)
Earnings Per Share, Diluted	$ (0.78)	$ (0.23)	$ (1.25)	$ (0.11)
Weighted average shares outstanding:
Basic	7,851,000	7,804,000	7,806,000	7,758,000
Diluted	7,851,000	7,804,000	7,806,000	7,758,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income	$ (6,125,000)	$ (1,802,000)	$ (9,761,000)	$ (839,000)
Other comprehensive income:
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax	(254,000)	907,000	539,000	561,000
Unrealized Foreign Currency Hedge Gain (Loss), Tax	58,000	(202,000)	(144,000)	(156,000)
Interest rate swaps:
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	87,000	(175,000)	809,000	(424,000)
Income tax benefit (expense)	(20,000)	40,000	(184,000)	97,000
Post retirement benefit plan adjustments:
Net actuarial gain	28,000	43,000	88,000	129,000
Prior service costs	(122,000)	(124,000)	(372,000)	(372,000)
Income tax benefit	20,000	17,000	60,000	51,000
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (6,462,000)	$ (1,026,000)	$ (10,215,000)	$ (299,000)

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($)	Total	Common Stock Outstanding	Paid-In Capital	Accumulated Other Comprehensive Income	Treasury Stock	Retained Earnings [Member]
Common Stock, Shares, Outstanding		7,711,277
Balance	$ (101,893,000)	$ (77,000)	$ 31,465,000	$ (2,070,000)	$ (28,153,000)	$ (96,434,000)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification						1,069,000
Balance at Dec. 31, 2017	(101,893,000)	(77,000)	31,465,000	(2,070,000)	(28,153,000)	(96,434,000)
Balance	(101,893,000)	(77,000)	31,465,000	(2,070,000)	(28,153,000)	(96,434,000)
Net income	(839,000)					(839,000)
Dividends, Common Stock, Cash	(792,000)					(792,000)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments	404,000			404,000
Unrealized Gain (Loss) on Derivatives	$ 327,000			327,000
Treasury Stock, Shares, Acquired	(17,180)
Treasury Stock, Value	$ (250,000)				(250,000)
Common stock issued- net, value	1,000	$ 1,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		77,318
Share-based compensation	1,228,000		1,228,000
Balance at Sep. 30, 2018	(102,849,000)	$ (78,000)	32,693,000	(2,609,000)	(28,403,000)	(95,872,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(192,000)			(192,000)
Common Stock, Shares, Outstanding		7,771,415
Balance	(103,615,000)	$ (78,000)	32,434,000	(1,832,000)	(28,403,000)	(97,674,000)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1,069,000
Balance at Jun. 30, 2018	(103,615,000)	(78,000)	32,434,000	(1,832,000)	(28,403,000)	(97,674,000)
Balance	(103,615,000)	(78,000)	32,434,000	(1,832,000)	(28,403,000)	(97,674,000)
Net income	(1,802,000)					(1,802,000)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments	705,000			705,000
Unrealized Gain (Loss) on Derivatives	136,000			136,000
Share-based compensation	259,000		259,000
Balance at Sep. 30, 2018	(102,849,000)	$ (78,000)	32,693,000	(2,609,000)	(28,403,000)	(95,872,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(64,000)			(64,000)
Common Stock, Shares, Outstanding		7,771,415
Balance	$ (102,849,000)	$ (78,000)	32,693,000	(2,609,000)	(28,403,000)	(95,872,000)
Treasury Stock, Shares		7,744
Common Stock, Shares, Outstanding	7,776,164	7,776,164
Balance	$ (98,929,000)	$ (78,000)	33,208,000	(2,117,000)	(28,403,000)	(91,929,000)
Treasury Stock, Shares	(3,790,308)
Balance at Dec. 31, 2018	$ (98,929,000)	(78,000)	33,208,000	(2,117,000)	(28,403,000)	(91,929,000)
Balance	(98,929,000)	$ (78,000)	33,208,000	(2,117,000)	(28,403,000)	(91,929,000)
Net income	(9,761,000)
Dividends, Common Stock, Cash	(225,000)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments	396,000			396,000
Other Comprehensive Income Derivative Instruments Net Of Tax	625,000			625,000	(60,000)
Common stock issued- net, shares		86,316
Common stock issued- net, value	1,000	$ 1,000
Treasury Stock, Retired, Par Value Method, Amount	(60,000)
Share-based compensation	1,264,000		1,264,000
Balance at Sep. 30, 2019	(89,919,000)	$ (79,000)	34,472,000	(1,663,000)	(28,463,000)	(82,168,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax				(225,000)
Common Stock, Shares, Outstanding		7,854,736
Balance	(95,984,000)	$ (79,000)	34,074,000	(2,001,000)	(28,463,000)	(88,293,000)
Balance at Jun. 30, 2019	(95,984,000)	(79,000)	34,074,000	(2,001,000)	(28,463,000)	(88,293,000)
Balance	(95,984,000)	(79,000)	34,074,000	(2,001,000)	(28,463,000)	(88,293,000)
Net income	(6,125,000)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments	(196,000)			(196,000)
Other Comprehensive Income Derivative Instruments Net Of Tax	67,000			67,000
Share-based compensation	398,000		398,000
Balance at Sep. 30, 2019	(89,919,000)	$ (79,000)	34,472,000	(1,663,000)	(28,463,000)	(82,168,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	$ (75,000)			(75,000)
Common Stock, Shares, Outstanding	7,854,736	7,854,736
Balance	$ (89,919,000)	$ (79,000)	$ 34,472,000	$ (1,663,000)	$ (28,463,000)	$ (82,168,000)
Treasury Stock, Shares	(3,798,052)

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Unaudited) - Parenthetical - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Tax effect of change in post retirement benefits	$ 20,000	$ 17,000	$ 60,000	$ 51,000
Unrealized Foreign Currency Hedge Gain (Loss), Tax	58,000	(202,000)	(144,000)	(156,000)
Unrealized Interest Rate Swap Gain (Loss), Tax	$ 106,000	$ (40,000)	$ 184,000	$ (97,000)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Goodwill, Impairment Loss	$ 4,100,000	$ 0
Gain (Loss) on Disposition of Assets	0	6,000
Increase (Decrease) in Deferred Income Taxes	(632,000)	0
Payments of Dividends	0	(792,000)
Cash flows from operating activities:
Net income	(9,761,000)	(839,000)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,700,000	7,105,000
Share-based compensation	1,264,000	1,228,000
(Gain) loss on foreign currency translation and transaction	(22,000)	14,000
Change in operating assets and liabilities:
Accounts receivable	(378,000)	(12,528,000)
Inventories	2,352,000	(2,265,000)
Prepaid and other assets	1,900,000	3,060,000
Accounts payable	(2,505,000)	13,272,000
Accrued and other liabilities	253,000	(2,255,000)
Post retirement benefits liability	(298,000)	(274,000)
Net cash provided by operating activities	3,973,000	6,524,000
Cash flows from investing activities:
Purchase of property, plant and equipment	(6,280,000)	(4,761,000)
Net cash used in investing activities	(6,280,000)	(67,218,000)
Cash flows from financing activities:
Proceeds from (Repayments of) Debt	0	45,000,000
Repayments of Short-term Debt	(2,532,000)	(9,281,000)
Proceeds from Lines of Credit	152,121,000	67,594,000
Payments related to purchase of treasury stock	(60,000)	(250,000)
Net Cash Provided by (Used in) Financing Activities	416,000	33,914,000
Business Combination, Consideration Transferred	0	(62,457,000)
Repayments of Lines of Credit	(148,679,000)	(67,594,000)
Payments of Financing Costs	(434,000)	(763,000)
Net change in cash and cash equivalents	(1,891,000)	(26,780,000)
Cash and cash equivalents at beginning of period	1,891,000	26,780,000
Cash and cash equivalents at end of period	0	0
Cash paid for:
Interest (net of amounts capitalized)	2,706,000	1,612,000
Income taxes	1,160,000	848,000
Non Cash:
Fixed asset purchases in accounts payable	$ 429,000	$ 344,000

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and include all of the information and disclosures required by accounting principles generally accepted in the United States of America for interim reporting, which are less than those required for annual reporting. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (all of which are normal and recurring in nature) necessary to present fairly the financial position of Core Molding Technologies, Inc. and its subsidiaries (“Core Molding Technologies” or the “Company”) at September 30, 2019 , and the results of operations and cash flows for the nine months ended September 30, 2019 . The Company has reclassified certain prior-year amounts to conform to the current-year's presentation. The “Notes to Consolidated Financial Statements” contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2018, should be read in conjunction with these consolidated financial statements. Core Molding Technologies is a manufacturer of sheet molding compound ("SMC") and molder of thermoset and thermoplastic products. The Company operates in one operating segment as a molder of thermoplastic and thermoset structural products. The Company's operating segment consists of two component reporting units, Core Traditional and Horizon Plastics. The Company produces and sells molded products for varied markets, including medium and heavy-duty trucks, automobiles, marine, construction and other commercial markets. The Company offers customers a wide range of manufacturing processes to fit various program volume and investment requirements. These processes include compression molding of SMC, bulk molding compounds ("BMC"), resin transfer molding ("RTM"), liquid molding of dicyclopentadiene ("DCPD"), spray-up and hand-lay-up, glass mat thermoplastics ("GMT"), direct long-fiber thermoplastics ("D-LFT") and structural foam and structural web injection molding ("SIM"). Core Molding Technologies has its headquarters in Columbus, Ohio, and operates production facilities in Columbus and Batavia, Ohio; Gaffney, South Carolina; Winona, Minnesota; Matamoros and Escobedo, Mexico; and Cobourg, Ontario, Canada.

Critical Accounting Policy (Not

Critical Accounting Policy (Notes)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	The preparation of these consolidated financial statements requires management 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, management evaluates its estimates and judgments. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Management believes the following critical accounting policies, among others, affect its more significant judgments and estimates used in the preparation of its consolidated financial statements. Going Concern: Under FASB ASU 2014-15, “Presentation of Financial Statements - Going Concern,” management is required to evaluate conditions or events as related to uncertainties that raise substantial doubt about the Company’s ability to continue as a going concern and to provide related financial disclosures, as applicable. Our consolidated financial statements have been prepared on a going-concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. As further discussed in Note 12 - Debt, as of September 30, 2019, the Company was not in compliance with the fixed charge coverage ratio requirement under the Company's Amended and Restated Credit Agreement, dated January 16, 2018 (the “A/R Credit Agreement”), with KeyBank National Association as the administrative agent (the "Administrative Agent") and various other financial institutions thereto as lenders (the "Lenders"). As a result of this violation, the Company is in negotiations with the Administrative Agent to enter into a forbearance agreement to address the non-compliance and establish milestones related to restructuring or refinancing its existing debt. The Company continues to have the ability to draw on the revolving line of credit while it is negotiating a forbearance agreement with the Administrative Agent. However, though it is not anticipated, until an agreement between the Company and the Lenders under the A/R Credit Agreement is in effect, the Lenders may terminate their funding and demand repayment of all amounts outstanding under the A/R Credit Agreement. Accordingly, the Company’s remaining long-term debt under the A/R Credit Agreement, consisting of $59,037,000 in borrowings under the revolving credit commitment and the loan commitments, was classified as a current liability in the Company’s consolidated balance sheet as of September 30, 2019. As a result, the Company’s current liabilities exceeded its current assets by $19,739,000 as of September 30, 2019. If the Lenders were to call the loans or demand repayment of all existing borrowings, this could result in the Company being unable to meet its working capital obligations. Management is pursuing the restructuring or refinancing of its existing obligations under the A/R Credit Agreement. The Company is evaluating several financing options with multiple providers to refinance some or all of the current obligations under the A/R Credit Agreement. The Company is considering financing options including an asset backed lending facility using the Company’s accounts receivable and inventories as security, term loans secured with the Company’s real estate and machinery and equipment, sale and leaseback of Company owned real estate and potential equity financing. The Company has engaged Huron Consulting Services to evaluate the Company’s turnaround financial projections, review with management various strategic alternatives that could result in a financing arrangement supported by projected future performance and serve as the Company’s financial advisor to work through a potential modification of the existing A/R Credit Agreement. The Company has engaged a third party firm to appraise the Company’s assets in order to assess the financing capacity available from those assets. The Company has obtained term sheets for new financing from several potential financers. Any new financing remains subject to asset appraisals, field exams, financial projection due diligence, real estate environmental reviews, and other customary legal documentation. The Company is working to implement alternative financing or execute an amendment to the A/R Credit Agreement within a time period acceptable to its existing Lenders. While the Company is working with the existing lenders to enter into a forbearance agreement, it can not guarantee the parties will be able to reach mutually agreeable terms, or predict if the Lenders will exercise their rights and remedies under the A/R Credit Agreement beyond the term of any forbearance agreement. Additionally, since the Company has no firm commitments for additional financing, there can be no assurances that the Company will be able to secure additional financing on terms that are acceptable to the Company, or at all. As there can be no assurance that the Company will be able to successfully implement its refinancing plan, these conditions raise substantial doubt about the Company’s ability to continue as a going concern. The Company's consolidated financial statements do not include adjustments, if any, that might arise from the outcome of this uncertainty. Management has been executing on its turnaround plan that started in December of 2018 and has been successful in improving equipment uptime, improving employee retention and reducing premium freight costs for expediting shipments to customers. While management believes these improvements have been successful and were the priority of the turnaround plan, operational efficiency improvements at the plants have not resulted in the level of financial improvements anticipated. Higher material usage and labor variances have impacted earnings and caused us to not meet forecasts established in the first quarter of 2019 when the Company entered into the First Amendment to the A/R Credit Agreement. Management has, or is in the process of taking, the following actions to improve financial performance at its operating facilities: • Improved operational management team through hiring of new plant managers at several of our plants to provide stronger leadership • Developed specific action plans focused on reducing material usage and improving labor productivity • Implemented business and financial management systems to monitor performance by plant and drive improvement through timely identification of operational challenges • Implementation of IATF certification process • Implemented inventory management systems to reduce stock outage events which cause downtime and labor inefficiency • Implemented customer price increases where margin on product was not meeting profitability targets, and evaluated relationships with major customers to assess ongoing profitability of those relationships. On November 15, 2019 the Company provided notice to the Volvo Group (“Volvo”) of the Company’s intention to terminate its agreement with Volvo, with such termination to become effective twelve months from the date of notice, absent the parties reaching mutually agreeable terms upon which to continue their relationship. Sales to Volvo amounted to approximately 17 %, 22 %, and 29 % of total sales for 2018, 2017, and 2016, respectively and 18 % of sales through the nine-months ended September 30, 2019. • Implemented cost saving measures and actions to align controllable spending and labor workforce to reduced sales volumes in the current truck market Revenue Recognition: The Company recognizes revenue from two streams, product revenue and tooling revenue. Product revenue is earned from the manufacture and sale of sheet molding compound and thermoset and thermoplastic products. Revenue from product sales is generally recognized as products are shipped, as the Company transfers title and risk of ownership to the customer and is entitled to payment. In limited circumstances, the Company recognizes revenue from product sales when products are produced and the customer takes title and risk of ownership at the Company's production facility. Tooling revenue is earned from manufacturing tools, molds and assembly equipment as part of a tooling program for a customer. Given that the Company is providing a significant service of producing highly interdependent component parts of the tooling program, each tooling program consists of a single performance obligation to provide the customer the capability to produce a single product. Based on the arrangement with the customer, the Company recognizes revenue either at a point in time or over time. When the Company does not have an enforceable right to payment, the Company recognizes tooling revenue at a point in time. In such cases, the Company recognizes revenue upon customer acceptance, which is when the customer has legal title to the tools. Certain tooling programs include an enforceable right to payment. In those cases, the Company recognizes revenue over time based on the extent of progress towards completion of its performance obligation. The Company uses a cost-to-cost measure of progress for such contracts because it best depicts the transfer of value to the customer and also correlates with the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services to the customer. Under the cost-to-cost measure of progress, progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Accounts Receivable Allowances: Management maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. If the financial condition of the Company’s customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The Company recorded an allowance for doubtful accounts of $ 51,000 and $25,000 at September 30, 2019 and December 31, 2018 , respectively. Management also records an allowance for estimated customer chargebacks for returns, price discounts and adjustments, premium freight and expediting costs and customer production line disruption costs resulting from late deliveries. At times, customers have asserted a right to significant production line disruption charges to recover damages as a result of late delivery. The Company typically works with its customers to minimize disruption charges, validate damages and negotiate resolution. The Company records accruals for customer chargebacks when a valid charge is probable and the amount of the charge can be reasonably estimated. Should customer chargebacks fluctuate from the estimated amounts, additional allowances may be necessary. The Company reduced accounts receivable for chargebacks by $ 1,034,000 at September 30, 2019 and $ 2,344,000 at December 31, 2018 . Inventories: Inventories, which include material, labor and manufacturing overhead, are valued at the lower of cost or net realizable value. The inventories are accounted for using the first-in, first-out (FIFO) method of determining inventory costs. Inventory quantities on-hand are regularly reviewed, and where necessary, provisions for excess and obsolete inventory are recorded based on historical and anticipated usage. The Company has recorded an allowance for slow moving and obsolete inventory of $ 836,000 at September 30, 2019 and $ 957,000 at December 31, 2018 . Contract Assets/Liabilities: Contract assets and liabilities represent the net cumulative customer billings, vendor payments and revenue recognized for tooling programs. For tooling programs where net revenue recognized and vendor payments exceed customer billings, the Company recognizes a contract asset. For tooling programs where net customer billings exceed revenue recognized and vendor payments, the Company recognizes a contract liability. Customer payment terms vary by contract and can range from progress payments based on work performed or one single payment once the contract is completed. The Company has recorded contract assets of $1,061,000 at September 30, 2019 , and $3,915,000 at December 31, 2018. The Company records contract assets in prepaid expenses and other current assets on the Consolidated Balance Sheet. During the nine months ended September 30, 2019 , the Company recognized no impairments on contract assets. The Company has recorded contract liabilities of $1,344,000 at September 30, 2019 and $1,686,000 at December 31, 2018. The Company records contract liabilities in accrued other liabilities on the Consolidated Balance Sheet. For the nine months ended September 30, 2019 , the Company did not recognize a material amount of revenue to settle contract liabilities. Income Taxes: The Company evaluates the balance of deferred tax assets that will be realized based on the premise that the Company is more likely than not to realize deferred tax benefits through the generation of future taxable income. Management makes assumptions, judgments, and estimates to determine our current and deferred tax provision and also the deferred tax assets and liabilities. The Company evaluates provisions and deferred tax assets quarterly to determine if adjustments to our valuation allowance are required based on the consideration of all available evidence. As of September 30, 2019 the Company had a gross deferred tax asset of $3,689,000 of which $1,904,000 is related to tax positions in the United States and $1,395,000 related to tax positions in Canada and $ 390,000 related to tax positions in Mexico. At September 30 2019, the Company recorded a valuation allowance against all deferred tax assets in the United States, due to cumulative losses over the last three years and uncertainty related to the Company’s ability to realize net loss carryforwards and other net deferred tax assets in the future. The Company believes that the deferred tax assets associated with the Canadian tax jurisdictions are more-likely-than-not to be realizable based on estimates of future taxable income and the Company's ability to carryback losses. Derivative Instruments: Derivative instruments are utilized to manage exposure to fluctuations in foreign currency exchange rates and interest rates on long term debt obligations. All derivative instruments are formally documented as cash flow hedges and are recorded at fair value at each reporting period. Gains and losses related to currency forward contracts and interest rate swaps are deferred and recorded as a component of Accumulated Other Comprehensive Income in the Consolidated Statement of Stockholders' Equity and then subsequently recognized on the Consolidated Statement of Income when the hedged item affects net income. The ineffective portion of the change in fair value of a hedge, if any, is recognized in income immediately. For additional information on derivative instruments, see Note 15. Long-Lived Assets: Long-lived assets consist primarily of property, plant and equipment and definite-lived intangibles. The recoverability of long-lived assets is evaluated by an analysis of operating results and consideration of other significant events or changes in the business environment. The Company evaluates whether impairment exists for property, plant and equipment on the basis of undiscounted expected future cash flows from operations before interest. There was no impairment of the Company's long-lived assets for the nine months ended September 30, 2019 or September 30, 2018 . Goodwill and Other Intangibles: The Company evaluates goodwill annually on December 31 to determine whether impairment exists, or at interim periods if an indicator of possible impairment exists. As a result of the Horizon Plastics acquisition on January 16, 2018 and the status of its integration, the Company established two reporting units, Core Traditional and Horizon Plastics. The annual impairment tests of goodwill may be completed through qualitative assessments, however the Company may elect to bypass the qualitative assessment and proceed directly to a quantitative impairment test for any reporting unit in any period. The Company may resume the qualitative assessment for any reporting unit in any subsequent period. The Company’s annual impairment assessment at December 31, 2018 consisted of a quantitative analysis for both its Core Traditional and Horizon Plastics reporting units. It concluded that the carrying value of Core Traditional was greater than the fair value, which resulted in a goodwill impairment charge of $2,403,000 , representing all the goodwill related to the Core Traditional reporting unit. The analysis of the Company’s other reporting unit, Horizon Plastics, indicated no goodwill impairment charge as the excess of the estimated fair value over the carrying value of its invested capital was approximately 23% of the book value of its net assets at December 31, 2018. Due to the Company's financial performance and continued depressed stock price, the Company performed a quantitative analysis for both of its reporting units at September 30, 2019. During 2019, the Company incurred a loss of margin in its Horizon Plastics reporting unit caused by selling price decreases that the Company has not been able to fully offset with material cost reductions. As a result of the quantitative analysis, the Company concluded that the carrying value of Horizon Plastics was greater than the fair value, which resulted in a goodwill impairment charge of $4,100,000 at September 30, 2019 representing 19% of the goodwill related to the Horizon Plastics reporting unit. Self-Insurance: The Company is self-insured with respect to its Columbus and Batavia, Ohio, Gaffney, South Carolina, Winona, Minnesota and Brownsville, Texas medical, dental and vision claims and Columbus and Batavia, Ohio workers’ compensation claims, all of which are subject to stop-loss insurance thresholds. The Company is also self-insured for dental and vision with respect to its Cobourg, Canada location. The Company has recorded an estimated liability for self-insured medical, dental, vision and worker’s compensation claims incurred but not reported at September 30, 2019 and December 31, 2018 of $ 1,096,000 and $ 960,000 , respectively. Post-retirement Benefits: Management records an accrual for post-retirement costs associated with the health care plan sponsored by Core Molding Technologies. Should actual results differ from the assumptions used to determine the reserves, additional provisions may be required. In particular, increases in future healthcare costs above the assumptions could have an adverse effect on Core Molding Technologies’ operations. The effect of a change in healthcare costs is described in Note 12 of the Notes to Consolidated Financial Statements contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2018. Core Molding Technologies had a liability for post retirement healthcare benefits based on actuarially computed estimates of $ 8,063,000 at September 30, 2019 and $ 8,076,000 at December 31, 2018 .

Recent Accounting Pronouncement

Recent Accounting Pronouncement (Notes)	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) . This update requires organizations to recognize lease assets and lease liabilities on the balance sheet and also disclose key information about leasing arrangements. This ASU is effective for annual reporting periods beginning on or after December 15, 2018, and interim periods within those annual periods. Earlier application is permitted for all entities as of the beginning of an interim or annual period. In accordance with ASU 2016-02, the Company elected not to recognize lease assets and lease liabilities for leases with a term of twelve months or less. The ASU requires a modified retrospective transition method, or a transition method option further described within ASU 2018-11, with the option to elect a package of practical expedients that permits the Company to: (1) not reassess whether expired or existing contracts contain leases, (2) not reassess lease classification for existing or expired leases and (3) not consider whether previously capitalized initial direct costs would be appropriate under the new standard. The Company elected to apply the package of practical expedients. The Company adopted ASU No. 2016-02 as of January 1, 2019, using the modified retrospective approach. The modified retrospective approach provides a method for recording existing leases at adoption without restating previously reported periods. In addition, the Company elected the practical expedients permitted under the transition guidance within the new standard, which among other things, allowed the Company to carry forward the historical lease classification. In addition, the Company elected the practical expedient to determine the lease term for existing leases. In the application of practical expedient, the Company evaluated the buildings leased and the current financial performance of the plant associated, which resulted in the determination that most renewal options would be reasonably certain in determining the expected lease term. Adoption of the new standard resulted in the recording of additional net right of use assets and lease liabilities of $4,490,000 and $4,428,000 , respectively, as of January 1, 2019. The present value of lease liabilities has been measured using the Company’s revolving loan borrowing rates as of December 31, 2018 (one day prior to initial application). Additionally, ROU assets for these operating leases have been measured as the initial measurement of applicable lease liabilities adjusted for any unamortized initial prepaid/accrued rent and any ASC Topic 420 liabilities. The standard did not materially impact the Company's consolidated statement of income (loss) or statement of cash flows.

Net Income per Common Share

Net Income per Common Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Net Income per Common Share	Basic net loss per common share is computed based on the weighted average number of common shares outstanding during the period. Diluted net loss per common share is computed similarly but includes the effect of the assumed exercise of restricted stock and stock appreciation rights under the treasury stock method. The computation of basic and diluted net loss per common share is as follows: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Net loss $ (6,125,000 ) $ (1,802,000 ) $ (9,761,000 ) $ (839,000 ) Weighted average common shares outstanding — basic 7,851,000 7,804,000 7,806,000 7,758,000 Effect of dilutive securities — — — — Weighted average common and potentially issuable common shares outstanding — diluted 7,851,000 7,804,000 7,806,000 7,758,000 Basic net loss per common share $ (0.78 ) $ (0.23 ) $ (1.25 ) $ (0.11 ) Diluted net loss per common share $ (0.78 ) $ (0.23 ) $ (1.25 ) $ (0.11 )

Major Customers

Major Customers	9 Months Ended
	Sep. 30, 2019
Concentration Risks, Types, No Concentration Percentage [Abstract]
Major Customers	Core Molding Technologies has four major customers, Navistar, Inc. (“Navistar”), Volvo Group North America, LLC (“Volvo”), PACCAR, Inc. (“PACCAR”), and Universal Forest Products, Inc. ("UFP"). Major customers are defined as customers whose sales individually consist of more than ten percent of total sales during any reporting period in the current year. The following table presents sales revenue for the above-mentioned customers for the three and nine months ended September 30, 2019 and 2018 : Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Navistar product sales $ 15,115,000 $ 14,123,000 $ 46,411,000 $ 37,939,000 Navistar tooling sales 145,000 1,031,000 927,000 1,043,000 Total Navistar sales 15,260,000 15,154,000 47,338,000 38,982,000 Volvo product sales 11,117,000 11,037,000 40,213,000 33,222,000 Volvo tooling sales 61,000 11,000 200,000 54,000 Total Volvo sales 11,178,000 11,048,000 40,413,000 33,276,000 PACCAR product sales 11,532,000 10,684,000 35,779,000 25,984,000 PACCAR tooling sales 165,000 321,000 1,325,000 6,384,000 Total PACCAR sales 11,697,000 11,005,000 37,104,000 32,368,000 UFP product sales 6,751,000 7,212,000 22,076,000 21,261,000 UFP tooling sales — 240,000 — 240,000 Total UFP sales 6,751,000 7,452,000 22,076,000 21,501,000 Other product sales 22,996,000 19,249,000 69,924,000 68,837,000 Other tooling sales 6,773,000 768,000 11,313,000 1,360,000 Total other sales 29,769,000 20,017,000 81,237,000 70,197,000 Total product sales 67,511,000 62,305,000 214,403,000 187,243,000 Total tooling sales 7,144,000 2,371,000 13,765,000 9,081,000 Total sales $ 74,655,000 $ 64,676,000 $ 228,168,000 $ 196,324,000

Inventory (Notes)

Inventory (Notes)	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Inventory Disclosure [Text Block]	Inventories consisted of the following: September 30, 2019 December 31, 2018 Raw materials $ 15,431,000 $ 17,278,000 Work in process 1,740,000 2,034,000 Finished goods 6,242,000 6,453,000 $ 23,413,000 $ 25,765,000 Inventory quantities on-hand are regularly reviewed, and where necessary, provisions for excess and obsolete inventory are recorded based on historical and anticipated usage.

Property, Plant & Equipment

Property, Plant & Equipment	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Property, Plant & Equipment	Property, plant and equipment consisted of the following for the periods specified: September 30, 2019 December 31, 2018 Property, plant and equipment $ 169,993,000 $ 164,145,000 Accumulated depreciation (89,565,000 ) (83,488,000 ) Property, plant and equipment — net $ 80,428,000 $ 80,657,000 Property, plant, and equipment are recorded at cost, unless obtained through acquisition, then assets are recorded at estimated fair value at the date of acquisition. Depreciation is provided on a straight-line method over the estimated useful lives of the assets. The carrying amount of long-lived assets is evaluated annually to determine if an adjustment to the depreciation period or to the unamortized balance is warranted. Depreciation expense for the three months ended September 30, 2019 and 2018 was $1,977,000 and $1,907,000 , respectively. Depreciation expense for the nine months ended September 30, 2019 and 2018 was $6,077,000 and $5,739,000 , respectively. Amounts invested in capital additions in progress were $ 5,115,000 and $ 5,014,000 at September 30, 2019 and December 31, 2018 , respectively. At September 30, 2019 and December 31, 2018 , purchase commitments for capital expenditures in progress were $ 879,000 and $ 3,461,000 , respectively.

Business Combination (Notes)

Business Combination (Notes)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	On January 16, 2018, the Company entered into an Asset Purchase Agreement (the "Agreement") with Horizon Plastics International Inc., 1541689 Ontario Inc., 2551024 Ontario Inc. and Horizon Plastics de Mexico, S.A. de C.V. (collectively "Horizon Plastics"). Pursuant to the terms of the Agreement the Company acquired substantially all of the assets and assumed certain specified liabilities of Horizon Plastics for a cash purchase of $ 62,457,000 . The purchase price was subject to working capital adjustments resulting in an increase in the purchase price of $548,000 . The acquisition was funded through a combination of cash on hand and borrowings under the Amended and Restated Credit Agreement ("A/R Credit Agreement"), further described in Note 12, entered into with KeyBank National Association as administrative agent and various other financial institutions on January 16, 2018. The purpose of the acquisition was to increase the Company's process capabilities to include structural foam and structural web molding, expand its geographical footprint, and diversify the Company's customer base. Consideration was allocated to assets acquired and liabilities assumed based on their fair values as of the acquisition date as follows: Accounts Receivable $ 7,677,000 Inventory 6,523,000 Other Current Assets 832,000 Property and Equipment 12,994,000 Intangibles 16,770,000 Goodwill 21,476,000 Accounts Payable (3,181,000 ) Other Current Liabilities (86,000 ) Total $ 63,005,000 The purchase price included consideration for strategic benefits, including an assembled workforce, operational infrastructure and synergistic revenue opportunities, which resulted in the recognition of goodwill. The goodwill is deductible for income tax purposes. The Company incurred $ 1,289,000 of expense for the nine months ended September 30, 2018 associated with the acquisition, which was recorded in selling, general and administrative expense. The amount allocated to intangible assets has been attributed to the following categories and will be amortized over the useful lives of each individual asset identified on a straight-line basis as follows: Acquired Intangible Assets Estimated Fair Value Estimated Useful Life (Years) Non-competition Agreement $ 1,810,000 5 Trademarks 1,610,000 10 Developed Technology 4,420,000 7 Customer Relationships 8,930,000 12 Total $ 16,770,000 Pro Forma Information The unaudited pro forma information for the combined results of the Company has been prepared as if the 2018 acquisitions had taken place on January 1, 2017. The unaudited pro forma information is not necessarily indicative of the results that we would have achieved had the transactions actually taken place on January 1, 2017 and the unaudited pro forma information does not purport to be indicative of future financial operating results. Pro forma for the three months ended September 30, Pro forma for the nine months ended September 30, 2018 2018 Net revenue $ 64,676,000 $ 198,993,000 Net income (loss) (1,693,000 ) 142,000 Basic and diluted net income (loss) per share $ (0.22 ) $ 0.02 The unaudited pro forma net income includes the following adjustments that would have been recorded had the 2018 acquisition taken place on January 1, 2017. Pro forma for the three months ended September 30, Pro forma for the nine months ended September 30, 2018 2018 Non-recurring transaction costs $ — $ (1,289,000 ) Depreciation expense — 55,000 Amortization expense — 78,000 Interest expense (141,000 ) (204,000 ) Income tax expense 31,000 263,000

Post Retirement Benefits

Post Retirement Benefits	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Post Retirement Benefits	The components of expense for Core Molding Technologies’ post-retirement benefit plans for the three and nine months ended September 30, 2019 and 2018 are as follows: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Pension expense: Multi-employer plan $ 270,000 $ 186,000 $ 732,000 $ 549,000 Defined contribution plan 364,000 182,000 950,000 698,000 Total pension expense 634,000 368,000 1,682,000 1,247,000 Health and life insurance: Interest cost 72,000 69,000 216,000 207,000 Amortization of prior service costs (125,000 ) (124,000 ) (375,000 ) (372,000 ) Amortization of net loss 30,000 43,000 88,000 129,000 Net periodic benefit cost (23,000 ) (12,000 ) (71,000 ) (36,000 ) Total post retirement benefits expense $ 611,000 $ 356,000 $ 1,611,000 $ 1,211,000 The Company made payments of $1,682,000 to pension plans and $224,000 for post-retirement healthcare and life insurance during the nine months ended September 30, 2019 . For the remainder of 2019 , the Company expects to make approximately $394,000 of pension plan payments, of which $150,000 was accrued at September 30, 2019 . The Company also expects to make approximately $933,000 of post-retirement healthcare and life insurance payments for the remainder of 2019 , all of which were accrued at September 30, 2019 .

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	Debt consists of the following: September 30, December 31, Term loans, interest at a variable rate (6.11% at September 30, 2019 and 4.34% at December 31, 2018) with monthly payments of interest and quarterly payments of principal through January 2023 $ 39,094,000 $ 41,625,000 Revolving loans, interest at a variable rate (5.82% at September 30, 2019 and 4.39% at December 31, 2018) 20,817,000 17,375,000 Total 59,911,000 59,000,000 Less deferred loan costs (874,000 ) (611,000 ) Less current portion (59,037,000 ) (3,230,000 ) Long-term debt and long-term revolving debt $ — $ 55,159,000 Credit Agreement On January 16, 2018, the Company entered into the A/R Credit Agreement with the Administrative Agent and the Lenders. Pursuant to the terms of the A/R Credit Agreement (i) the Company may borrow revolving loans in the aggregate principal amount of up to $ 40,000,000 (the “US Revolving Loans”) from the Lenders and term loans in the aggregate principal amount of up to $ 32,000,000 from the Lenders, (ii) the Company's wholly-owned subsidiary, Horizon Plastics International, Inc., (the "Subsidiary") may borrow revolving loans in an aggregate principal amount of up to $ 10,000,000 from the Lenders (which revolving loans shall reduce the availability of the US Revolving Loans to the Company on a dollar-for-dollar basis) and term loans in an aggregate principal amount of up to $ 13,000,000 from the Lenders, (iii) the Company obtained a Letter of Credit Commitment of $ 250,000 , of which $ 160,000 has been issued and (iv) the Company repaid the outstanding term loan balance of $6,750,000 . The A/R Credit Agreement is secured by a guarantee of each U.S. and Canadian subsidiary of the Company, and by a lien on substantially all of the present and future assets of the Company and its U.S. and Canadian subsidiaries, except that only 65% of the stock issued by Corecomposites de Mexico, S. de R.L. de C.V. has been pledged. Concurrent with the closing of the A/R Credit Agreement the Company borrowed the $ 32,000,000 term loan and $ 2,000,000 from the US Revolving loan and the Subsidiary borrowed the $ 13,000,000 term loan and $ 2,500,000 from revolving loans to provide $ 49,500,000 of funding for the acquisition of Horizon Plastics. Interest is payable monthly at one month LIBOR plus a basis point margin ranging from 175 to 400 basis points based on the Company's leverage ratio. The margin was set at 400 basis points as of September 30, 2019 . On March 14, 2019, the Company entered into the first amendment (“First Amendment”) to the A/R Credit Agreement (as amended by the First Amendment, the "Amended A/R Credit Agreement") with the Lenders. Pursuant to the terms of the First Amendment, the Company and Lenders agreed to modify certain terms of the A/R Credit Agreement. These modifications included (i) implementation of an availability block on the U.S. Revolving Loans reducing availability from $ 40,000,000 to $32,500,000 , (ii) modification to the definition of EBITDA to add back certain one-time expenses, (iii) waiver of non-compliance with the leverage covenant as of December 31, 2018 and modification of the leverage ratio definition and covenant to eliminate testing of the leverage ratio until December 31, 2019, (iv) waiver of non-compliance with the fixed charge covenant as of December 31, 2018 and modification of the fixed charge coverage ratio definition and covenant requirement, (v) implementation of a capital expenditure spend limit of $ 7,500,000 during the first six months of 2019 and $ 12,500,000 for the full year 2019, (vi) an increase of the applicable interest margin spread for existing term and revolving loans, and (vii) an increase in the commitment fees on any unused U.S. Revolving Loans. The Company has available $32,500,000 of variable rate revolving loans of which $20,817,000 is outstanding as of September 30, 2019 . These revolving loans are scheduled to mature on January 1, 2023 and are classified as current on the balance sheet. Bank Covenants The Company is required to meet certain financial covenants included in the Amended A/R Credit Agreement with respect to leverage ratios, fixed charge ratios and capital expenditures. As of September 30, 2019, the Company was in default with its fixed charge coverage covenant associated with the loans made under the Amended A/R Credit Agreement as described above. As a result of this default the Company and the Administrative Agent on behalf of the Lenders are negotiating a forbearance agreement to address the non-compliance and establish milestones for the Company related to restructuring or refinancing its existing debt. It is anticipated that in the event of a new default under the Amended A/R Credit Agreement, or an event of default of any of the milestones that may be required by the Lenders under the forbearance agreement once established, the Lenders would retain their rights to immediately exercise all of their rights and remedies. While it is not anticipated, until a forbearance agreement is in effect, the Lenders may terminate their funding and demand payment of all amounts outstanding under the Amended A/R Credit Agreement. Accordingly, the Company’s remaining long-term debt under the Amended A/R Credit Agreement, consisting of $59,037,000 in borrowings under the revolving credit commitment and the term loan commitments, was classified as a current liability in the Company’s consolidated balance sheet as of September 30, 2019. Management is pursuing the restructuring or refinancing of its existing obligations under the Amended A/R Credit Agreement. The Company is evaluating several financing options with multiple providers to refinance some or all of the current Amended A/R Credit Agreement. The Company is considering financing options including an asset backed lending facility using the Company’s accounts receivable and inventories as security, term loans secured with the Company’s real estate and machinery and equipment, sale and leaseback of Company owned real estate and potential equity financing. Any new financing remains subject to asset appraisals, field exams, financial projection due diligence, real estate environmental reviews, and other customary legal documentation. Interest Rate Swaps The Company entered into two interest rate swap agreements that became effective January 18, 2018 and continue through January 2023, one of which was designated as a cash flow hedge for $ 25,000,000 of the $ 32,000,000 term loan to the Company mentioned above and the other designated as a cash flow hedge for $ 10,000,000 of the $ 13,000,000 term loan to the Subsidiary mentioned above. Under these agreements, the Company will pay a fixed rate of approximately 2.49% to the counterparty and receives one month LIBOR. The fair value of the interest rate swap was a liability of $873,000 and $65,000 at September 30, 2019 and December 31, 2018 , respectively. While the Company is exposed to credit loss on its interest rate swaps in the event of non-performance by the counter party to the swap, management believes that such non-performance is unlikely to occur given the financial resources of the counter party.

Leases (Notes)

Leases (Notes)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lessee, Operating Leases [Text Block]	7. LEASES The Company has operating leases with fixed payment terms primarily associated with buildings and warehouses. The Company's leases have remaining lease terms of less than two years to five years, some of which include options to extend the lease for six years. Operating leases are included in operating lease right-of-use ("ROU") assets and operating lease liabilities on the Consolidated Balance Sheets. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. The Company used the applicable incremental borrowing rate at implementation date to measure lease liabilities and ROU assets. The incremental borrowing rate used by the Company was based on baseline rates and adjusted by the credit spreads commensurate with the Company’s secured borrowing rate. At each reporting period when there is a new lease initiated, the Company will utilize its incremental borrowing rate to perform lease classification tests on lease components and to measure ROU assets and lease liabilities. The components of lease expense were as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating lease cost $ 358,000 $ 1,073,000 Total net lease cost $ 358,000 $ 1,073,000 Other supplemental balance sheet information related to leases was as follows: September 30, 2019 Operating leases: Current operating lease right of use assets $ — Noncurrent operating lease right of use assets 4,823,000 Total operating lease right of use assets $ 4,823,000 Current operating lease liabilities (A) $ 1,319,000 Noncurrent operating lease liabilities 3,445,000 Total operating lease liabilities $ 4,764,000 Weighted average remaining lease term (in years): Operating leases 4.4 Weighted average discount rate: Operating leases 4.9 % Other information related to leases were as follows: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 1,073,000 As of September 30, 2019, maturities of lease liabilities were as follows: Operating Leases 2019 $ 358,000 2020 1,433,000 2021 1,174,000 2022 1,102,000 2023 1,000,000 2024 and thereafter 530,000 Total lease payments 5,597,000 Less: imputed interest (833,000 ) Total lease obligations 4,764,000 Less: current obligations (1,319,000 ) Long-term lease obligations $ 3,445,000 As of December 31, 2018, maturities of lease liabilities were as follows: Operating Leases 2019 $ 1,291,000 2020 1,099,000 2021 838,000 2022 766,000 2023 661,000 2024 and thereafter 331,000 Total lease payments $ 4,986,000

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	As of September 30, 2019 the Company had a gross deferred tax asset of $3,689,000 of which $1,904,000 is related to tax positions in the United States and $1,395,000 related to tax position in Canada and $ 390,000 related to tax positions in Mexico. At September 30 2019, the Company recorded a valuation allowance against all deferred tax assets in the United States, due to cumulative losses over the last three years and uncertainty related to the Company’s ability to realize net loss carryforwards and other net deferred tax assets in the future. The Company believes that the deferred tax assets associated with the Canadian tax jurisdictions, are more-likely-than-not to be realizable based on estimates of future taxable income and the Company's ability to carryback losses. Income tax benefit for the nine months ended September 30, 2019 is estimated to be $ 452,000 , on a loss of $ 10,213,000 before income taxes. Income tax expense for the nine months ended September 30, 2018 was estimated to be $ 228,000 , on a loss before income taxes of $611,000 . Income tax expense for the nine months ended September 30, 2019 includes a one-time charge of $1,904,000 associated with recording a valuation allowance at September 30, 2019. The Company files income tax returns in the U.S., Mexico, Canada and various state jurisdictions. The Company is no longer subject to U.S. federal and state income tax examinations by tax authorities for years prior to 2015, and is no longer subject to Mexican income tax examinations by Mexican authorities for years prior to 2013. As a result of the Horizon Plastics acquisition on January 16, 2018, the Company now has additional filing requirements for new entities in Canada and Mexico, and is not subject to Canadian and Mexican tax examinations for those entities for years prior to 2018.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in a transaction between market participants as of the measurement date. Fair value is measured using the fair value hierarchy and related valuation methodologies as defined in the authoritative literature. This guidance provides a fair value framework that requires the categorization of assets and liabilities into three levels based upon the assumptions (inputs) used to price the assets or liabilities. Level 1 provides the most reliable measure of fair value, whereas Level 3 generally requires significant management judgment. The three levels are defined as follows: Level 1 - Quoted prices in active markets for identical assets and liabilities. Level 2 - Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations, in which all significant inputs are observable in active markets. Level 3 - Significant unobservable inputs reflecting management's own assumptions about the inputs used in pricing the asset or liability. The Company’s financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, debt, interest rate swaps and foreign currency derivatives. Cash and cash equivalents, accounts receivable and accounts payable carrying values as of September 30, 2019 and December 31, 2018 approximate fair value due to the short-term maturities of these financial instruments. The carrying amounts of long-term debt and the revolving line of credit approximate fair value as of September 30, 2019 and December 31, 2018 due to the short term nature of the underlying variable rate LIBOR agreements. The Company had Level 2 fair value measurements at September 30, 2019 and December 31, 2018 relating to the Company’s interest rate swaps and foreign currency derivatives. Derivative and hedging activities Foreign Currency Derivatives The Company conducted business in foreign countries and paid certain expenses in foreign currencies; therefore, the Company was exposed to foreign currency exchange risk between the U.S. Dollar and foreign currencies, which could impact the Company’s operating income and cash flows. To mitigate risk associated with foreign currency exchange, the Company entered into forward contracts to exchange a fixed amount of U.S. Dollars for a fixed amount of foreign currency, which will be used to fund future foreign currency cash flows. At inception, all forward contracts are formally documented as cash flow hedges and are measured at fair value each reporting period. Derivatives are formally assessed both at inception and at least quarterly thereafter, to ensure that derivatives used in hedging transactions are highly effective in offsetting changes in cash flows of the hedged item. If it is determined that a derivative ceases to be a highly effective hedge, or if the anticipated transaction is no longer probable of occurring, hedge accounting is discontinued, and any future mark-to-market adjustments are recognized in earnings. The effective portion of gain or loss is reported in other comprehensive income and the ineffective portion is reported in earnings. The impacts of these contracts were largely offset by gains and losses resulting from the impact of changes in exchange rates on transactions denominated in the foreign currency. As of September 30, 2019 , the Company had no ineffective portion related to the cash flow hedges. Interest Rate Swaps The Company entered into interest rate swap contracts to fix the interest rate on an initial aggregate amount of $35,000,000 thereby reducing exposure to interest rate changes. The interest rate swap pays a fixed rate of 2.49% to the counterparty and receives 30 day LIBOR for both cash flow hedges. At inception, all interest rate swaps were formally documented as cash flow hedges and are measured at fair value each reporting period. See Note 12, "Debt", for additional information. Financial statements impacts The following tables detail amounts related to our derivatives designated as hedging instruments: Fair Value of Derivative Instruments September 30, 2019 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value Foreign exchange contracts Prepaid expense other current assets $ 4,000 Accrued other liabilities $ 214,000 Notional contract values $ 3,643,000 $ 15,907,000 Interest rate swaps Prepaid expense other current assets $ — Accrued other liabilities $ 873,000 Notional swap values $ — $ 30,406,000 December 31, 2018 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value Foreign exchange contracts Prepaid expense other current assets $ — Accrued other liabilities $ 750,000 Notional contract values $ — $ 27,588,000 Interest rate swaps Prepaid expense other current assets $ — Accrued other liabilities $ 65,000 Notional swap values $ — $ 32,375,000 The following tables summarize the amount of unrealized / realized gain and loss recognized in Accumulated Other Comprehensive Income (AOCI) for the three months ended September 30, 2019 and 2018 : Derivatives in subtopic 815-20 Cash Flow Hedging Relationship Amount of Unrealized Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (A) Amount of Realized Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income 2019 2018 2019 2018 Foreign exchange contracts $ (192,000 ) $ 887,000 Cost of goods sold $ 55,000 $ (11,000 ) Selling, general and administrative expense $ 8,000 $ (9,000 ) Interest rate swaps $ (101,000 ) $ 114,000 Interest expense $ (14,000 ) $ (61,000 ) The following tables summarize the amount of unrealized / realized gain and loss recognized in Accumulated Other Comprehensive Income (AOCI) for the nine months ended September 30, 2019 and 2018 : Derivatives in subtopic 815-20 Cash Flow Hedging Relationship Amount of Unrealized Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (A) Amount of Realized Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income 2019 2018 2019 2018 Foreign exchange contracts $ 649,000 $ 766,000 Cost of goods sold $ 110,000 $ 184,000 Selling, general and administrative expense $ — $ 21,000 Interest rate swaps $ (823,000 ) $ 254,000 Interest expense $ (13,000 ) $ (169,000 ) (A) The foreign currency derivative activity reclassified from Accumulated Other Comprehensive Income is allocated to cost of goods sold and selling, general and administrative expense based on the percentage of foreign currency spend.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Notes)	9 Months Ended
	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents changes in Accumulated Other Comprehensive Income, net of tax, for the nine months ended September 30, 2019 and 2018 : 2018: Hedging Derivative Activities Post Retirement Benefit Plan Items (A) Accumulated Other Comprehensive Income Balance at December 31, 2017 $ (197,000 ) $ 2,267,000 $ 2,070,000 Other Comprehensive Income before reclassifications 1,020,000 — 1,020,000 Amounts reclassified from accumulated other comprehensive income (36,000 ) (243,000 ) (279,000 ) Income tax benefit (expense) (253,000 ) 51,000 (202,000 ) Balance at September 30, 2018 $ 534,000 $ 2,075,000 $ 2,609,000 2019: Balance at December 31, 2018 $ (612,000 ) $ 2,729,000 $ 2,117,000 Other Comprehensive Loss before reclassifications (174,000 ) — (174,000 ) Amounts reclassified from accumulated other comprehensive income (96,000 ) (284,000 ) (380,000 ) Income tax benefit 40,000 60,000 100,000 Balance at September 30, 2019 $ (842,000 ) $ 2,505,000 $ 1,663,000 The following table presents changes in Accumulated Other Comprehensive Income, net of tax, for the nine months ended September 30, 2019 and 2018 : 2018: Hedging Derivative Activities Post Retirement Benefit Plan Items (A) Accumulated Other Comprehensive Income Balance at December 31, 2017 $ (197,000 ) $ 2,267,000 $ 2,070,000 Other Comprehensive Income before reclassifications 1,020,000 — 1,020,000 Amounts reclassified from accumulated other comprehensive income (36,000 ) (243,000 ) (279,000 ) Income tax benefit (expense) (253,000 ) 51,000 (202,000 ) Balance at September 30, 2018 $ 534,000 $ 2,075,000 $ 2,609,000 2019: Balance at December 31, 2018 $ (612,000 ) $ 2,729,000 $ 2,117,000 Other Comprehensive Loss before reclassifications (174,000 ) — (174,000 ) Amounts reclassified from accumulated other comprehensive income (96,000 ) (284,000 ) (380,000 ) Income tax benefit 40,000 60,000 100,000 Balance at September 30, 2019 $ (842,000 ) $ 2,505,000 $ 1,663,000 (A) The effect of post-retirement benefit items reclassified from Accumulated Other Comprehensive Income is included in total cost of sales on the Consolidated Statements of Income (Loss). These Accumulated Other Comprehensive Income (Loss) components are included in the computation of net periodic benefit cost (see Note 11 "Post Retirement Benefits" for additional details). The tax effect of post-retirement benefit items reclassified from Accumulated Other Comprehensive Income is included in income tax expense (benefit) on the Consolidated Statements of Income (Loss).

Critical Accounting Policy (Pol

Critical Accounting Policy (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Substantial Doubt about Going Concern [Text Block]	Going Concern: Under FASB ASU 2014-15, “Presentation of Financial Statements - Going Concern,” management is required to evaluate conditions or events as related to uncertainties that raise substantial doubt about the Company’s ability to continue as a going concern and to provide related financial disclosures, as applicable. Our consolidated financial statements have been prepared on a going-concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. As further discussed in Note 12 - Debt, as of September 30, 2019, the Company was not in compliance with the fixed charge coverage ratio requirement under the Company's Amended and Restated Credit Agreement, dated January 16, 2018 (the “A/R Credit Agreement”), with KeyBank National Association as the administrative agent (the "Administrative Agent") and various other financial institutions thereto as lenders (the "Lenders"). As a result of this violation, the Company is in negotiations with the Administrative Agent to enter into a forbearance agreement to address the non-compliance and establish milestones related to restructuring or refinancing its existing debt. The Company continues to have the ability to draw on the revolving line of credit while it is negotiating a forbearance agreement with the Administrative Agent. However, though it is not anticipated, until an agreement between the Company and the Lenders under the A/R Credit Agreement is in effect, the Lenders may terminate their funding and demand repayment of all amounts outstanding under the A/R Credit Agreement. Accordingly, the Company’s remaining long-term debt under the A/R Credit Agreement, consisting of $59,037,000 in borrowings under the revolving credit commitment and the loan commitments, was classified as a current liability in the Company’s consolidated balance sheet as of September 30, 2019. As a result, the Company’s current liabilities exceeded its current assets by $19,739,000 as of September 30, 2019. If the Lenders were to call the loans or demand repayment of all existing borrowings, this could result in the Company being unable to meet its working capital obligations. Management is pursuing the restructuring or refinancing of its existing obligations under the A/R Credit Agreement. The Company is evaluating several financing options with multiple providers to refinance some or all of the current obligations under the A/R Credit Agreement. The Company is considering financing options including an asset backed lending facility using the Company’s accounts receivable and inventories as security, term loans secured with the Company’s real estate and machinery and equipment, sale and leaseback of Company owned real estate and potential equity financing. The Company has engaged Huron Consulting Services to evaluate the Company’s turnaround financial projections, review with management various strategic alternatives that could result in a financing arrangement supported by projected future performance and serve as the Company’s financial advisor to work through a potential modification of the existing A/R Credit Agreement. The Company has engaged a third party firm to appraise the Company’s assets in order to assess the financing capacity available from those assets. The Company has obtained term sheets for new financing from several potential financers. Any new financing remains subject to asset appraisals, field exams, financial projection due diligence, real estate environmental reviews, and other customary legal documentation. The Company is working to implement alternative financing or execute an amendment to the A/R Credit Agreement within a time period acceptable to its existing Lenders. While the Company is working with the existing lenders to enter into a forbearance agreement, it can not guarantee the parties will be able to reach mutually agreeable terms, or predict if the Lenders will exercise their rights and remedies under the A/R Credit Agreement beyond the term of any forbearance agreement. Additionally, since the Company has no firm commitments for additional financing, there can be no assurances that the Company will be able to secure additional financing on terms that are acceptable to the Company, or at all. As there can be no assurance that the Company will be able to successfully implement its refinancing plan, these conditions raise substantial doubt about the Company’s ability to continue as a going concern. The Company's consolidated financial statements do not include adjustments, if any, that might arise from the outcome of this uncertainty. Management has been executing on its turnaround plan that started in December of 2018 and has been successful in improving equipment uptime, improving employee retention and reducing premium freight costs for expediting shipments to customers. While management believes these improvements have been successful and were the priority of the turnaround plan, operational efficiency improvements at the plants have not resulted in the level of financial improvements anticipated. Higher material usage and labor variances have impacted earnings and caused us to not meet forecasts established in the first quarter of 2019 when the Company entered into the First Amendment to the A/R Credit Agreement. Management has, or is in the process of taking, the following actions to improve financial performance at its operating facilities: • Improved operational management team through hiring of new plant managers at several of our plants to provide stronger leadership • Developed specific action plans focused on reducing material usage and improving labor productivity • Implemented business and financial management systems to monitor performance by plant and drive improvement through timely identification of operational challenges • Implementation of IATF certification process • Implemented inventory management systems to reduce stock outage events which cause downtime and labor inefficiency • Implemented customer price increases where margin on product was not meeting profitability targets, and evaluated relationships with major customers to assess ongoing profitability of those relationships. On November 15, 2019 the Company provided notice to the Volvo Group (“Volvo”) of the Company’s intention to terminate its agreement with Volvo, with such termination to become effective twelve months from the date of notice, absent the parties reaching mutually agreeable terms upon which to continue their relationship. Sales to Volvo amounted to approximately 17 %, 22 %, and 29 % of total sales for 2018, 2017, and 2016, respectively and 18 % of sales through the nine-months ended September 30, 2019. • Implemented cost saving measures and actions to align controllable spending and labor workforce to reduced sales volumes in the current truck market
Contract with Customer, Asset and Liability [Policy Text Block]	Contract Assets/Liabilities: Contract assets and liabilities represent the net cumulative customer billings, vendor payments and revenue recognized for tooling programs. For tooling programs where net revenue recognized and vendor payments exceed customer billings, the Company recognizes a contract asset. For tooling programs where net customer billings exceed revenue recognized and vendor payments, the Company recognizes a contract liability. Customer payment terms vary by contract and can range from progress payments based on work performed or one single payment once the contract is completed. The Company has recorded contract assets of $1,061,000 at September 30, 2019 , and $3,915,000 at December 31, 2018. The Company records contract assets in prepaid expenses and other current assets on the Consolidated Balance Sheet. During the nine months ended September 30, 2019 , the Company recognized no impairments on contract assets. The Company has recorded contract liabilities of $1,344,000 at September 30, 2019 and $1,686,000 at December 31, 2018. The Company records contract liabilities in accrued other liabilities on the Consolidated Balance Sheet.
Postemployment Benefit Plans, Policy [Policy Text Block]	Post-retirement Benefits: Management records an accrual for post-retirement costs associated with the health care plan sponsored by Core Molding Technologies. Should actual results differ from the assumptions used to determine the reserves, additional provisions may be required. In particular, increases in future healthcare costs above the assumptions could have an adverse effect on Core Molding Technologies’ operations. The effect of a change in healthcare costs is described in Note 12 of the Notes to Consolidated Financial Statements contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2018. Core Molding Technologies had a liability for post retirement healthcare benefits based on actuarially computed estimates of $ 8,063,000 at September 30, 2019 and $ 8,076,000 at December 31, 2018 .
Self Insurance Reserve [Policy Text Block]	Self-Insurance: The Company is self-insured with respect to its Columbus and Batavia, Ohio, Gaffney, South Carolina, Winona, Minnesota and Brownsville, Texas medical, dental and vision claims and Columbus and Batavia, Ohio workers’ compensation claims, all of which are subject to stop-loss insurance thresholds. The Company is also self-insured for dental and vision with respect to its Cobourg, Canada location. The Company has recorded an estimated liability for self-insured medical, dental, vision and worker’s compensation claims incurred but not reported at September 30, 2019 and December 31, 2018 of $ 1,096,000 and $ 960,000 , respectively.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Intangibles: The Company evaluates goodwill annually on December 31 to determine whether impairment exists, or at interim periods if an indicator of possible impairment exists. As a result of the Horizon Plastics acquisition on January 16, 2018 and the status of its integration, the Company established two reporting units, Core Traditional and Horizon Plastics. The annual impairment tests of goodwill may be completed through qualitative assessments, however the Company may elect to bypass the qualitative assessment and proceed directly to a quantitative impairment test for any reporting unit in any period. The Company may resume the qualitative assessment for any reporting unit in any subsequent period. The Company’s annual impairment assessment at December 31, 2018 consisted of a quantitative analysis for both its Core Traditional and Horizon Plastics reporting units. It concluded that the carrying value of Core Traditional was greater than the fair value, which resulted in a goodwill impairment charge of $2,403,000 , representing all the goodwill related to the Core Traditional reporting unit. The analysis of the Company’s other reporting unit, Horizon Plastics, indicated no goodwill impairment charge as the excess of the estimated fair value over the carrying value of its invested capital was approximately 23% of the book value of its net assets at December 31, 2018. Due to the Company's financial performance and continued depressed stock price, the Company performed a quantitative analysis for both of its reporting units at September 30, 2019. During 2019, the Company incurred a loss of margin in its Horizon Plastics reporting unit caused by selling price decreases that the Company has not been able to fully offset with material cost reductions. As a result of the quantitative analysis, the Company concluded that the carrying value of Horizon Plastics was greater than the fair value, which resulted in a goodwill impairment charge of $4,100,000 at September 30, 2019 representing 19% of the goodwill related to the Horizon Plastics reporting unit.
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Derivative Instruments: Derivative instruments are utilized to manage exposure to fluctuations in foreign currency exchange rates and interest rates on long term debt obligations. All derivative instruments are formally documented as cash flow hedges and are recorded at fair value at each reporting period. Gains and losses related to currency forward contracts and interest rate swaps are deferred and recorded as a component of Accumulated Other Comprehensive Income in the Consolidated Statement of Stockholders' Equity and then subsequently recognized on the Consolidated Statement of Income when the hedged item affects net income. The ineffective portion of the change in fair value of a hedge, if any, is recognized in income immediately. For additional information on derivative instruments, see Note 15.
Inventory, Policy [Policy Text Block]	Inventories: Inventories, which include material, labor and manufacturing overhead, are valued at the lower of cost or net realizable value. The inventories are accounted for using the first-in, first-out (FIFO) method of determining inventory costs. Inventory quantities on-hand are regularly reviewed, and where necessary, provisions for excess and obsolete inventory are recorded based on historical and anticipated usage. The Company has recorded an allowance for slow moving and obsolete inventory of $ 836,000 at September 30, 2019 and $ 957,000 at December 31, 2018 .
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]	Accounts Receivable Allowances: Management maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. If the financial condition of the Company’s customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The Company recorded an allowance for doubtful accounts of $ 51,000 and $25,000 at September 30, 2019 and December 31, 2018 , respectively. Management also records an allowance for estimated customer chargebacks for returns, price discounts and adjustments, premium freight and expediting costs and customer production line disruption costs resulting from late deliveries. At times, customers have asserted a right to significant production line disruption charges to recover damages as a result of late delivery. The Company typically works with its customers to minimize disruption charges, validate damages and negotiate resolution. The Company records accruals for customer chargebacks when a valid charge is probable and the amount of the charge can be reasonably estimated. Should customer chargebacks fluctuate from the estimated amounts, additional allowances may be necessary. The Company reduced accounts receivable for chargebacks by $ 1,034,000 at September 30, 2019 and $ 2,344,000 at December 31, 2018 .
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition: The Company recognizes revenue from two streams, product revenue and tooling revenue. Product revenue is earned from the manufacture and sale of sheet molding compound and thermoset and thermoplastic products. Revenue from product sales is generally recognized as products are shipped, as the Company transfers title and risk of ownership to the customer and is entitled to payment. In limited circumstances, the Company recognizes revenue from product sales when products are produced and the customer takes title and risk of ownership at the Company's production facility. Tooling revenue is earned from manufacturing tools, molds and assembly equipment as part of a tooling program for a customer. Given that the Company is providing a significant service of producing highly interdependent component parts of the tooling program, each tooling program consists of a single performance obligation to provide the customer the capability to produce a single product. Based on the arrangement with the customer, the Company recognizes revenue either at a point in time or over time. When the Company does not have an enforceable right to payment, the Company recognizes tooling revenue at a point in time. In such cases, the Company recognizes revenue upon customer acceptance, which is when the customer has legal title to the tools. Certain tooling programs include an enforceable right to payment. In those cases, the Company recognizes revenue over time based on the extent of progress towards completion of its performance obligation. The Company uses a cost-to-cost measure of progress for such contracts because it best depicts the transfer of value to the customer and also correlates with the amount of consideration to which the entity expects to be entitled in exchange for transferring the promised goods or services to the customer. Under the cost-to-cost measure of progress, progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.
Income Tax, Policy [Policy Text Block]	Income Taxes: The Company evaluates the balance of deferred tax assets that will be realized based on the premise that the Company is more likely than not to realize deferred tax benefits through the generation of future taxable income. Management makes assumptions, judgments, and estimates to determine our current and deferred tax provision and also the deferred tax assets and liabilities. The Company evaluates provisions and deferred tax assets quarterly to determine if adjustments to our valuation allowance are required based on the consideration of all available evidence. As of September 30, 2019 the Company had a gross deferred tax asset of $3,689,000 of which $1,904,000 is related to tax positions in the United States and $1,395,000 related to tax positions in Canada and $ 390,000 related to tax positions in Mexico. At September 30 2019, the Company recorded a valuation allowance against all deferred tax assets in the United States, due to cumulative losses over the last three years and uncertainty related to the Company’s ability to realize net loss carryforwards and other net deferred tax assets in the future. The Company believes that the deferred tax assets associated with the Canadian tax jurisdictions are more-likely-than-not to be realizable based on estimates of future taxable income and the Company's ability to carryback losses.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Long-Lived Assets: Long-lived assets consist primarily of property, plant and equipment and definite-lived intangibles. The recoverability of long-lived assets is evaluated by an analysis of operating results and consideration of other significant events or changes in the business environment. The Company evaluates whether impairment exists for property, plant and equipment on the basis of undiscounted expected future cash flows from operations before interest. There was no impairment of the Company's long-lived assets for the nine months ended September 30, 2019 or September 30, 2018 .

Net Income per Common Share (Ta

Net Income per Common Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Computation of basic and diluted net income per common share:	The computation of basic and diluted net loss per common share is as follows: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Net loss $ (6,125,000 ) $ (1,802,000 ) $ (9,761,000 ) $ (839,000 ) Weighted average common shares outstanding — basic 7,851,000 7,804,000 7,806,000 7,758,000 Effect of dilutive securities — — — — Weighted average common and potentially issuable common shares outstanding — diluted 7,851,000 7,804,000 7,806,000 7,758,000 Basic net loss per common share $ (0.78 ) $ (0.23 ) $ (1.25 ) $ (0.11 ) Diluted net loss per common share $ (0.78 ) $ (0.23 ) $ (1.25 ) $ (0.11 )

Major Customers (Tables)

Major Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Concentration Risks, Types, No Concentration Percentage [Abstract]
Schedule of Major Customers	The following table presents sales revenue for the above-mentioned customers for the three and nine months ended September 30, 2019 and 2018 : Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Navistar product sales $ 15,115,000 $ 14,123,000 $ 46,411,000 $ 37,939,000 Navistar tooling sales 145,000 1,031,000 927,000 1,043,000 Total Navistar sales 15,260,000 15,154,000 47,338,000 38,982,000 Volvo product sales 11,117,000 11,037,000 40,213,000 33,222,000 Volvo tooling sales 61,000 11,000 200,000 54,000 Total Volvo sales 11,178,000 11,048,000 40,413,000 33,276,000 PACCAR product sales 11,532,000 10,684,000 35,779,000 25,984,000 PACCAR tooling sales 165,000 321,000 1,325,000 6,384,000 Total PACCAR sales 11,697,000 11,005,000 37,104,000 32,368,000 UFP product sales 6,751,000 7,212,000 22,076,000 21,261,000 UFP tooling sales — 240,000 — 240,000 Total UFP sales 6,751,000 7,452,000 22,076,000 21,501,000 Other product sales 22,996,000 19,249,000 69,924,000 68,837,000 Other tooling sales 6,773,000 768,000 11,313,000 1,360,000 Total other sales 29,769,000 20,017,000 81,237,000 70,197,000 Total product sales 67,511,000 62,305,000 214,403,000 187,243,000 Total tooling sales 7,144,000 2,371,000 13,765,000 9,081,000 Total sales $ 74,655,000 $ 64,676,000 $ 228,168,000 $ 196,324,000

Inventory (Tables)

Inventory (Tables)	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	September 30, 2019 December 31, 2018 Raw materials $ 15,431,000 $ 17,278,000 Work in process 1,740,000 2,034,000 Finished goods 6,242,000 6,453,000 $ 23,413,000 $ 25,765,000

Property, Plant & Equipment (Ta

Property, Plant & Equipment (Tables)	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment [Table]	Property, plant and equipment consisted of the following for the periods specified: September 30, 2019 December 31, 2018 Property, plant and equipment $ 169,993,000 $ 164,145,000 Accumulated depreciation (89,565,000 ) (83,488,000 ) Property, plant and equipment — net $ 80,428,000 $ 80,657,000

Business Combination (Tables)

Business Combination (Tables)	9 Months Ended
	Sep. 30, 2019
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information [Table Text Block]	The unaudited pro forma information is not necessarily indicative of the results that we would have achieved had the transactions actually taken place on January 1, 2017 and the unaudited pro forma information does not purport to be indicative of future financial operating results. Pro forma for the three months ended September 30, Pro forma for the nine months ended September 30, 2018 2018 Net revenue $ 64,676,000 $ 198,993,000 Net income (loss) (1,693,000 ) 142,000 Basic and diluted net income (loss) per share $ (0.22 ) $ 0.02
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Consideration was allocated to assets acquired and liabilities assumed based on their fair values as of the acquisition date as follows: Accounts Receivable $ 7,677,000 Inventory 6,523,000 Other Current Assets 832,000 Property and Equipment 12,994,000 Intangibles 16,770,000 Goodwill 21,476,000 Accounts Payable (3,181,000 ) Other Current Liabilities (86,000 ) Total $ 63,005,000
Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table Text Block]	The unaudited pro forma net income includes the following adjustments that would have been recorded had the 2018 acquisition taken place on January 1, 2017. Pro forma for the three months ended September 30, Pro forma for the nine months ended September 30, 2018 2018 Non-recurring transaction costs $ — $ (1,289,000 ) Depreciation expense — 55,000 Amortization expense — 78,000 Interest expense (141,000 ) (204,000 ) Income tax expense 31,000 263,000

Business Combination Business C

Business Combination Business Combination, Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	The amount allocated to intangible assets has been attributed to the following categories and will be amortized over the useful lives of each individual asset identified on a straight-line basis as follows: Acquired Intangible Assets Estimated Fair Value Estimated Useful Life (Years) Non-competition Agreement $ 1,810,000 5 Trademarks 1,610,000 10 Developed Technology 4,420,000 7 Customer Relationships 8,930,000 12 Total $ 16,770,000

Goodwill and Intangibles (Table

Goodwill and Intangibles (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill [Line Items]
Schedule of Goodwill [Table Text Block]	Goodwill activity for the nine months ended September 30, 2019 consisted of the following: Balance at December 31, 2018 $ 21,476,000 Additions — Impairment (4,100,000 ) Balance at September 30, 2019 $ 17,376,000

Goodwill and Intangibles Intang

Goodwill and Intangibles Intangibles (Tables)	9 Months Ended
	Sep. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	Intangible assets at December 31, 2018 were comprised of the following: Definite-lived Intangible Assets Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Trade Name 25 Years $ 250,000 $ (37,000 ) $ 213,000 Trademarks 10 Years 1,610,000 (86,000 ) 1,524,000 Non-competition Agreement 5 Years 1,810,000 (360,000 ) 1,450,000 Developed Technology 7 Years 4,420,000 (605,000 ) 3,815,000 Customer Relationships 10-12 Years 9,330,000 (919,000 ) 8,411,000 Total $ 17,420,000 $ (2,007,000 ) $ 15,413,000 Intangible assets at September 30, 2019 were comprised of the following: Definite-lived Intangible Assets Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Trade name 25 Years $ 250,000 $ (45,000 ) $ 205,000 Trademarks 10 Years 1,610,000 (275,000 ) 1,335,000 Non-competition agreement 5 Years 1,810,000 (619,000 ) 1,191,000 Developed technology 7 Years 4,420,000 (1,079,000 ) 3,341,000 Customer relationships 10-12 Years 9,330,000 (1,450,000 ) 7,880,000 Total $ 17,420,000 $ (3,468,000 ) $ 13,952,000

Post Retirement Benefits (Table

Post Retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The components of expense for Core Molding Technologies’ post-retirement benefit plans for the three and nine months ended September 30, 2019 and 2018 are as follows: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 Pension expense: Multi-employer plan $ 270,000 $ 186,000 $ 732,000 $ 549,000 Defined contribution plan 364,000 182,000 950,000 698,000 Total pension expense 634,000 368,000 1,682,000 1,247,000 Health and life insurance: Interest cost 72,000 69,000 216,000 207,000 Amortization of prior service costs (125,000 ) (124,000 ) (375,000 ) (372,000 ) Amortization of net loss 30,000 43,000 88,000 129,000 Net periodic benefit cost (23,000 ) (12,000 ) (71,000 ) (36,000 ) Total post retirement benefits expense $ 611,000 $ 356,000 $ 1,611,000 $ 1,211,000

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	The components of lease expense were as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating lease cost $ 358,000 $ 1,073,000 Total net lease cost $ 358,000 $ 1,073,000
Supplemental Balance Sheet Disclosures [Text Block]	upplemental balance sheet information related to leases was as follows: September 30, 2019 Operating leases: Current operating lease right of use assets $ — Noncurrent operating lease right of use assets 4,823,000 Total operating lease right of use assets $ 4,823,000 Current operating lease liabilities (A) $ 1,319,000 Noncurrent operating lease liabilities 3,445,000 Total operating lease liabilities $ 4,764,000 Weighted average remaining lease term (in years): Operating leases 4.4 Weighted average discount rate: Operating leases 4.9 %
Cash Flow, Supplemental Disclosures [Text Block]	Other information related to leases were as follows: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 1,073,000
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	As of September 30, 2019, maturities of lease liabilities were as follows: Operating Leases 2019 $ 358,000 2020 1,433,000 2021 1,174,000 2022 1,102,000 2023 1,000,000 2024 and thereafter 530,000 Total lease payments 5,597,000 Less: imputed interest (833,000 ) Total lease obligations 4,764,000 Less: current obligations (1,319,000 ) Long-term lease obligations $ 3,445,000 As of December 31, 2018, maturities of lease liabilities were as follows: Operating Leases 2019 $ 1,291,000 2020 1,099,000 2021 838,000 2022 766,000 2023 661,000 2024 and thereafter 331,000 Total lease payments $ 4,986,000

Stock Based Compensation (Table

Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Compensation [Abstract]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	The following summarizes the status of Restricted Stock and changes during the nine months ended September 30, 2019 : Number of Shares Weighted Average Grant Date Fair Value Unvested balance at December 31, 2018 349,885 $ 10.62 Granted 132,327 7.69 Vested (86,316 ) 13.97 Forfeited (11,036 ) 15.37 Unvested balance at September 30, 2019 384,860 $ 9.90

Stock Based Compensation Stock

Stock Based Compensation Stock Appreciation Rights (Tables)	9 Months Ended
	Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block]	A summary of the Company's stock appreciation rights activity for the nine month period ended September 30, 2019 is as follows: Number of Weighted Average Outstanding as of December 31, 2018 — $ — Granted 226,021 2.57 Exercised — — Forfeited — — Outstanding at end of the period ended September 30, 2019 226,021 $ 2.57 Exercisable at end of the period ended September 30, 2019 29,028 $ 2.57

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Derivative Instruments, Gain (Loss) [Table Text Block]	The following tables summarize the amount of unrealized / realized gain and loss recognized in Accumulated Other Comprehensive Income (AOCI) for the three months ended September 30, 2019 and 2018 : Derivatives in subtopic 815-20 Cash Flow Hedging Relationship Amount of Unrealized Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (A) Amount of Realized Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income 2019 2018 2019 2018 Foreign exchange contracts $ (192,000 ) $ 887,000 Cost of goods sold $ 55,000 $ (11,000 ) Selling, general and administrative expense $ 8,000 $ (9,000 ) Interest rate swaps $ (101,000 ) $ 114,000 Interest expense $ (14,000 ) $ (61,000 )
Fair Value, by Balance Sheet Grouping [Table Text Block]	The following tables detail amounts related to our derivatives designated as hedging instruments: Fair Value of Derivative Instruments September 30, 2019 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value Foreign exchange contracts Prepaid expense other current assets $ 4,000 Accrued other liabilities $ 214,000 Notional contract values $ 3,643,000 $ 15,907,000 Interest rate swaps Prepaid expense other current assets $ — Accrued other liabilities $ 873,000 Notional swap values $ — $ 30,406,000 December 31, 2018 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value Foreign exchange contracts Prepaid expense other current assets $ — Accrued other liabilities $ 750,000 Notional contract values $ — $ 27,588,000 Interest rate swaps Prepaid expense other current assets $ — Accrued other liabilities $ 65,000 Notional swap values $ — $ 32,375,000

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents changes in Accumulated Other Comprehensive Income, net of tax, for the nine months ended September 30, 2019 and 2018 : 2018: Hedging Derivative Activities Post Retirement Benefit Plan Items (A) Accumulated Other Comprehensive Income Balance at December 31, 2017 $ (197,000 ) $ 2,267,000 $ 2,070,000 Other Comprehensive Income before reclassifications 1,020,000 — 1,020,000 Amounts reclassified from accumulated other comprehensive income (36,000 ) (243,000 ) (279,000 ) Income tax benefit (expense) (253,000 ) 51,000 (202,000 ) Balance at September 30, 2018 $ 534,000 $ 2,075,000 $ 2,609,000 2019: Balance at December 31, 2018 $ (612,000 ) $ 2,729,000 $ 2,117,000 Other Comprehensive Loss before reclassifications (174,000 ) — (174,000 ) Amounts reclassified from accumulated other comprehensive income (96,000 ) (284,000 ) (380,000 ) Income tax benefit 40,000 60,000 100,000 Balance at September 30, 2019 $ (842,000 ) $ 2,505,000 $ 1,663,000 The following table presents changes in Accumulated Other Comprehensive Income, net of tax, for the nine months ended September 30, 2019 and 2018 : 2018: Hedging Derivative Activities Post Retirement Benefit Plan Items (A) Accumulated Other Comprehensive Income Balance at December 31, 2017 $ (197,000 ) $ 2,267,000 $ 2,070,000 Other Comprehensive Income before reclassifications 1,020,000 — 1,020,000 Amounts reclassified from accumulated other comprehensive income (36,000 ) (243,000 ) (279,000 ) Income tax benefit (expense) (253,000 ) 51,000 (202,000 ) Balance at September 30, 2018 $ 534,000 $ 2,075,000 $ 2,609,000 2019: Balance at December 31, 2018 $ (612,000 ) $ 2,729,000 $ 2,117,000 Other Comprehensive Loss before reclassifications (174,000 ) — (174,000 ) Amounts reclassified from accumulated other comprehensive income (96,000 ) (284,000 ) (380,000 ) Income tax benefit 40,000 60,000 100,000 Balance at September 30, 2019 $ (842,000 ) $ 2,505,000 $ 1,663,000 (A) The effect of post-retirement benefit items reclassified from Accumulated Other Comprehensive Income is included in total cost of sales on the Consolidated Statements of Income (Loss). These Accumulated Other Comprehensive Income (Loss) components are included in the computation of net periodic benefit cost (see Note 11 "Post Retirement Benefits" for additional details). The tax effect of post-retirement benefit items reclassified from Accumulated Other Comprehensive Income is included in income tax expense (benefit) on the Consolidated Statements of Income (Loss).

Critical Accounting Policy (Det

Critical Accounting Policy (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Debt, Current	$ 59,037,000		$ 59,037,000		$ 3,230,000
Deferred Tax Assets, Valuation Allowance					0
Costs in Excess of Billings, Current	1,061,000		$ 1,061,000		3,915,000
Number of Reporting Units			2
Deferred Tax Assets, Gross, Noncurrent	3,689,000		$ 3,689,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(23,000)	$ (12,000)	(71,000)	$ (36,000)
Postemployment Benefits Liability	8,063,000		8,063,000		8,076,000
Self Insurance Reserve	1,096,000		1,096,000		960,000
Goodwill, Impairment Loss	$ 4,100,000	$ 0	$ 4,100,000	$ 0	$ 2,403,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	19.00%		19.00%		23.00%
Asset Impairment Charges			$ 0
Inventory Valuation Reserves	$ 836,000		836,000		$ 957,000
Allowance for Doubtful Accounts Receivable	51,000		51,000		25,000
Deferred Tax Liabilities, Net	1,153,000		1,153,000
Accounts Receivable, Allowance for Chargebacks	1,034,000		1,034,000		2,344,000
Billings in Excess of Cost, Current	1,344,000		1,344,000		$ 1,686,000
UNITED STATES
Deferred Tax Assets, Gross, Noncurrent	1,904,000		1,904,000
CANADA
Deferred Tax Assets, Gross, Noncurrent	1,395,000		1,395,000
MEXICO
Deferred Tax Assets, Gross, Noncurrent	$ 390,000		$ 390,000

Recent Accounting Pronounceme_2

Recent Accounting Pronouncement (Details) - USD ($)	Sep. 30, 2019	Jan. 01, 2019
Accounting Changes and Error Corrections [Abstract]
Operating Lease, Right-of-Use Asset	$ 4,823,000	$ 4,490,000
Operating Lease, Liability	$ 4,764,000	$ 4,428,000

Net Income per Common Share (De

Net Income per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income	$ (6,125,000)	$ (1,802,000)	$ (9,761,000)	$ (839,000)
Weighted average common shares outstanding — basic	7,851,000	7,804,000	7,806,000	7,758,000
Weighted Average Number Diluted Shares Outstanding Adjustment	0	0	0	0
Weighted average common and potentially issuable common shares outstanding — diluted	7,851,000	7,804,000	7,806,000	7,758,000
Earnings Per Share, Basic	$ (0.78)	$ (0.23)	$ (1.25)	$ (0.11)
Earnings Per Share, Diluted	$ (0.78)	$ (0.23)	$ (1.25)	$ (0.11)

Major Customers (Details)

Major Customers (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Major Customer [Line Items]
Revenues	$ 74,655,000	$ 64,676,000	$ 228,168,000	$ 196,324,000
Navistar [Member]
Revenue, Major Customer [Line Items]
Revenues	15,260,000	15,154,000	47,338,000	38,982,000
Volvo [Member]
Revenue, Major Customer [Line Items]
Revenues	11,178,000	11,048,000	40,413,000	33,276,000
Paccar [Member]
Revenue, Major Customer [Line Items]
Revenues	11,697,000	11,005,000	37,104,000	32,368,000
UFP [Member]
Revenue, Major Customer [Line Items]
Revenues	6,751,000	7,452,000	22,076,000	21,501,000
Revenue from Contract with Customer, Including Assessed Tax	6,751,000		22,076,000
Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	29,769,000	20,017,000	81,237,000	70,197,000
Product [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	67,511,000	62,305,000	214,403,000	187,243,000
Product [Member] | Navistar [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	15,115,000	14,123,000	46,411,000	37,939,000
Product [Member] | Volvo [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	11,117,000	11,037,000	40,213,000	33,222,000
Product [Member] | Paccar [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	11,532,000	10,684,000	35,779,000	25,984,000
Product [Member] | UFP [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		7,212,000		21,261,000
Product [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	22,996,000	19,249,000	69,924,000	68,837,000
Service [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	7,144,000	2,371,000	13,765,000	9,081,000
Service [Member] | Navistar [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	145,000	1,031,000	927,000	1,043,000
Service [Member] | Volvo [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	61,000	11,000	200,000	54,000
Service [Member] | Paccar [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	165,000	321,000	1,325,000	6,384,000
Service [Member] | UFP [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	240,000	0	240,000
Service [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 6,773,000	$ 768,000	$ 11,313,000	$ 1,360,000

Inventory (Details)

Inventory (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Inventory, Raw Materials and Purchased Parts, Net of Reserves	$ 15,431,000	$ 17,278,000
Inventory, Work in Process, Net of Reserves	1,740,000	2,034,000
Inventory, Finished Goods, Net of Reserves	6,242,000	6,453,000
Inventory, Net	$ 23,413,000	$ 25,765,000

Property, Plant & Equipment (De

Property, Plant & Equipment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Depreciation	$ 1,977,000	$ 1,907,000	$ 6,077,000	$ 5,739,000
Property, plant and equipment	169,993,000		169,993,000		$ 164,145,000
Accumulated depreciation	(89,565,000)		(89,565,000)		(83,488,000)
Property, Plant and Equipment, Net	80,428,000		80,428,000		80,657,000
Capital expenditures in progress	5,115,000		5,115,000		5,014,000
Commitments for capital expenditures in progress	$ 879,000		$ 879,000		$ 3,461,000

Business Combination (Details)

Business Combination (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Depreciation	$ 1,977,000	$ 1,907,000	$ 6,077,000	$ 5,739,000
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed		(1,289,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	16,770,000		16,770,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill	0		0
Business Combination, Consideration Transferred			0	62,457,000	$ 62,457,000
Amortization of Intangible Assets	487,000	482,000	1,461,000	1,366,000
Income Tax Expense (Benefit)	378,000	(304,000)	(452,000)	228,000
Interest Expense	$ (1,113,000)	(632,000)	$ (2,878,000)	(1,705,000)
Business Combination, Working Capital Purchase Price Adjustment					548,000
Horizon Plastics [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		64,676,000		198,993,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables					7,677,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory					6,523,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets					832,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					12,994,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					16,770,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill					21,476,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable					(3,181,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other					(86,000)
Business Combination, Consideration Transferred					$ 63,005,000
Business Acquisition, Pro Forma Net Income (Loss)		$ (1,693,000)		$ 142,000
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ (0.22)		$ 0.02
Pro Forma [Member]
Business Acquisition [Line Items]
Depreciation		$ 0		$ 55,000
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed		0		(1,289,000)
Amortization of Intangible Assets		0		78,000
Income Tax Expense (Benefit)		31,000		263,000
Interest Expense		$ (141,000)		$ (204,000)

Business Combination Business_2

Business Combination Business Combination, Intangible Assets (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2017	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 16,770,000
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 1,810,000
Finite-Lived Intangible Asset, Useful Life	5 years	5 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 1,610,000
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 4,420,000
Finite-Lived Intangible Asset, Useful Life	7 years	7 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 8,930,000
Horizon Plastics [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 16,770,000
Horizon Plastics [Member] | Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Horizon Plastics [Member] | Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Horizon Plastics [Member] | Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Horizon Plastics [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years

Goodwill and Intangibles (Detai

Goodwill and Intangibles (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Goodwill [Line Items]
Amortization of Intangible Assets	$ 487,000	$ 482,000	$ 1,461,000	$ 1,366,000
Goodwill	17,376,000		17,376,000		$ 21,476,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill	0		0
Goodwill, Impairment Loss	$ (4,100,000)	$ 0	$ (4,100,000)	$ 0	$ (2,403,000)
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	19.00%		19.00%		23.00%

Goodwill and Intangibles Inta_2

Goodwill and Intangibles Intangibles by Major Asset Class (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 487,000	$ 482,000	$ 1,461,000	$ 1,366,000
Finite-Lived Intangible Assets, Gross	17,420,000		17,420,000			$ 17,420,000
Finite-Lived Intangible Assets, Accumulated Amortization	(3,468,000)		(3,468,000)			(2,007,000)
Finite-Lived Intangible Assets, Net	13,952,000		$ 13,952,000			15,413,000
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			25 years		25 years
Finite-Lived Intangible Assets, Gross	250,000		$ 250,000			250,000
Finite-Lived Intangible Assets, Accumulated Amortization	(45,000)		(45,000)			(37,000)
Finite-Lived Intangible Assets, Net	205,000		$ 205,000			213,000
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years		10 years
Finite-Lived Intangible Assets, Gross	1,610,000		$ 1,610,000			1,610,000
Finite-Lived Intangible Assets, Accumulated Amortization	(275,000)		(275,000)			(86,000)
Finite-Lived Intangible Assets, Net	1,335,000		$ 1,335,000			1,524,000
Noncompete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years		5 years
Finite-Lived Intangible Assets, Gross	1,810,000		$ 1,810,000			1,810,000
Finite-Lived Intangible Assets, Accumulated Amortization	(619,000)		(619,000)			(360,000)
Finite-Lived Intangible Assets, Net	1,191,000		$ 1,191,000			1,450,000
Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years		7 years
Finite-Lived Intangible Assets, Gross	4,420,000		$ 4,420,000			4,420,000
Finite-Lived Intangible Assets, Accumulated Amortization	(1,079,000)		(1,079,000)			(605,000)
Finite-Lived Intangible Assets, Net	3,341,000		3,341,000			3,815,000
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	9,330,000		9,330,000			9,330,000
Finite-Lived Intangible Assets, Accumulated Amortization	(1,450,000)		(1,450,000)			(919,000)
Finite-Lived Intangible Assets, Net	$ 7,880,000		$ 7,880,000			$ 8,411,000
Minimum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years	10 years
Maximum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			12 years	12 years

Post Retirement Benefits (Detai

Post Retirement Benefits (Details) - USD ($)	3 Months Ended			9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension, health and life insurance expense:
Multi-employer plan contributions		$ 270,000	$ 186,000	$ 732,000	$ 549,000
Defined contribution plan contributions		364,000	182,000	950,000	698,000
Total pension expense		634,000	368,000	1,682,000	1,247,000
Interest cost		72,000	69,000	216,000	207,000
Amortization of prior service costs		(125,000)	(124,000)	(375,000)	(372,000)
Amortization of net loss		30,000	43,000	88,000	129,000
Net periodic benefit cost		(23,000)	(12,000)	(71,000)	(36,000)
Total post retirement benefits expense		611,000	$ 356,000	1,611,000	$ 1,211,000
Payments to pension plans				1,682,000
Payments for post retirement healthcare and life insurance				224,000
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accrued Expected Pension Plan Payments		$ 150,000		$ 150,000
Scenario, Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected payments to pension plans	$ 394,000
Expected future payments for other post retirement benefits	$ 933,000

Debt (Details)

Debt (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt	$ 59,911,000		$ 59,000,000
Loans Payable	39,094,000		41,625,000
Line of Credit, Current	20,817,000		0
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	(874,000)		(611,000)
Revolving Line of Credit	0		17,375,000
Purchase Price Funded with Debt	49,500,000
Less current portion	(59,037,000)		(3,230,000)
Long-term Debt, Gross	0		55,159,000
Long-term debt	$ 0		37,784,000
Derivative, Fixed Interest Rate	2.49%
Percent of subsidiary stock not security for financing	65.00%
Letter of Credit, Maximum			250,000
Letters of Credit Outstanding, Amount			$ 160,000
Term Loan Domestic [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 32,000,000
Domestic Line of Credit [Member]
Debt Instrument [Line Items]
Revolving Line of Credit	2,000,000
Maximum borrowing capacity	40,000,000
Term Loan Foreign [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 13,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.82%		4.39%
Debt Instrument, Basis Spread on Variable Rate	2.00%
Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Revolving Line of Credit	$ 2,500,000
Existing Term Loan [Member]
Debt Instrument [Line Items]
Loans Payable				$ 6,750,000
Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	40000.00%
Line of Credit [Member] | Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,000,000
First Amendment [Member] | Domestic Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	32,500,000
Interest Rate Swap Domestic [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	25,000,000
Interest Rate Swap Foreign [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	10,000,000
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 35,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.11%		4.34%
Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Restrictive Covenants	7500000
Maximum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	40000.00%
Minimum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	17500.00%
Liability [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ 873,000		$ 65,000
Scenario, Forecast [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Restrictive Covenants		12500000

Leases (Details)

Leases (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	6 years	6 years
Operating Lease, Cost	$ 358,000	$ 1,073,000
Operating Lease, Cost	358,000	1,073,000
Operating Lease, Right-of-Use Asset, Current	0	0
Operating Lease, Right-of-Use Asset, Noncurrent	4,823,000	4,823,000		$ 0
Operating Lease, Right-of-Use Asset	4,823,000	4,823,000	$ 4,490,000
Operating Lease, Liability, Current	(1,319,000)	(1,319,000)
Operating Lease, Liability, Noncurrent	3,445,000	3,445,000		0
Operating Lease, Liability	$ 4,764,000	$ 4,764,000	$ 4,428,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 5 months	4 years 5 months
Operating Lease, Weighted Average Discount Rate, Percent	0.00%	0.00%
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 358,000	$ 358,000		1,291,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	1,433,000	1,433,000		1,099,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,174,000	1,174,000		838,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	1,102,000	1,102,000		766,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	1,000,000	1,000,000		661,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	530,000	530,000		331,000
Lessee, Operating Lease, Liability, Payments, Due	5,597,000	5,597,000		$ 4,986,000
Lessee, Operating Lease, Imputed Interest	(833,000)	(833,000)
Lessee, Operating Lease, Discounted Lease Payments	$ 4,764,000	$ 4,764,000
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	2 years	2 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	5 years	5 years

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Deferred Tax Assets, Gross, Noncurrent	$ 3,689,000		$ 3,689,000
Income before income taxes	(5,747,000)	$ (2,106,000)	(10,213,000)	$ (611,000)
Deferred Tax Assets, Valuation Allowance					$ 0
Income Tax Expense (Benefit)	378,000	$ (304,000)	(452,000)	$ 228,000
CANADA
Deferred Tax Assets, Gross, Noncurrent	1,395,000		1,395,000
MEXICO
Deferred Tax Assets, Gross, Noncurrent	390,000		390,000
UNITED STATES
Deferred Tax Assets, Gross, Noncurrent	$ 1,904,000		$ 1,904,000

Stock Based Compensation (Detai

Stock Based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	3,000,000
Weighted Average Grant Date Fair Value of Restricted Stock
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense			$ 95,000	$ 20,000
Shares Paid for Tax Withholding for Share Based Compensation			7,744	17,180
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 0
Restricted Stock [Member]
Restricted Stock Rollforward, Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			349,885
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			132,327
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			86,316
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			11,036
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	384,860		384,860
Weighted Average Grant Date Fair Value of Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 10.62
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			7.69
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			13.97
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			15.37
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 9.90		$ 9.90
Unrecognized compensation expense	$ 2,377,000	$ 2,589,000		$ 2,589,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			2 years
Restricted Stock [Member] | Selling, General and Administrative Expenses [Member]
Weighted Average Grant Date Fair Value of Restricted Stock
Compensation costs	350,000	259,000	$ 1,121,000	1,228,000
Stock Appreciation Rights (SARs) [Member]
Weighted Average Grant Date Fair Value of Restricted Stock
Unrecognized compensation expense	$ 435,000	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	2 years 7 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			226,021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	226,021		226,021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	29,028
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			2.57
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price			0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 2.57		$ 2.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 2.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term			4 years 7 months
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 10		$ 0
Stock Appreciation Rights (SARs) [Member] | Selling, General and Administrative Expenses [Member]
Weighted Average Grant Date Fair Value of Restricted Stock
Compensation costs	$ 42,000	0	$ 145,000	0
Foreign Exchange Forward [Member] | Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	55,000	(11,000)	110,000	184,000
Foreign Exchange Forward [Member] | Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	8,000	(9,000)	0	21,000
Interest Rate Swap [Member] | Interest Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (14,000)	$ (61,000)	$ (13,000)	$ (169,000)

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Fixed Interest Rate	2.49%
Foreign Exchange Forward [Member] | Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 4,000	$ 0
Description of Location of Foreign Currency Derivatives on Balance Sheet	Prepaid expense other current assets	Prepaid expense other current assets
Derivative, Notional Amount	$ 3,643,000	$ 0
Foreign Exchange Forward [Member] | Liability [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Description of Location of Foreign Currency Derivatives on Balance Sheet	Accrued other liabilities	Accrued other liabilities
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ 214,000	$ 750,000
Derivative, Notional Amount	15,907,000	27,588,000
Interest Rate Swap [Member] | Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 0	$ 0
Description of Location of Foreign Currency Derivatives on Balance Sheet	Prepaid expense other current assets	Prepaid expense other current assets
Derivative, Notional Amount	$ 0	$ 0
Interest Rate Swap [Member] | Liability [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Description of Location of Foreign Currency Derivatives on Balance Sheet	Accrued other liabilities	Accrued other liabilities
Foreign Currency Contracts, Liability, Fair Value Disclosure		$ 0
Derivative, Notional Amount	$ 30,406,000	$ 32,375,000
Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Face Amount	$ 35,000,000

Fair Value of Financial Instr_4

Fair Value of Financial Instruments Derivative Instruments and Hedging Activities (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Loss on Foreign Currency Derivatives, before Tax	$ (192,000)	$ 887,000	$ 649,000	$ 766,000
Foreign Exchange Forward [Member] | Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	8,000	(9,000)	0	21,000
Foreign Exchange Forward [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	55,000	(11,000)	110,000	184,000
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Loss on Foreign Currency Derivatives, before Tax	(101,000)	114,000	(823,000)	254,000
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (14,000)	$ (61,000)	$ (13,000)	$ (169,000)

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 1,663,000		$ 1,663,000		$ 2,117,000
Unrealized Foreign Currency Hedge Gain (Loss), Tax	58,000	$ (202,000)	(144,000)	$ (156,000)
Derivative [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(842,000)	534,000	(842,000)	534,000	(612,000)	$ (197,000)
Unrealized Loss on Foreign Currency Derivatives, before Tax			(174,000)	1,020,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net			(96,000)	(36,000)
Other Comprehensive Income (Loss), Tax			40,000	(253,000)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,505,000	2,075,000	2,505,000	2,075,000	2,729,000	2,267,000
Unrealized Loss on Foreign Currency Derivatives, before Tax			0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Before Tax			284,000	243,000
Other Comprehensive Income (Loss), Tax			60,000	51,000
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 1,663,000	$ 2,609,000	1,663,000	2,609,000	$ 2,117,000	$ 2,070,000
Unrealized Loss on Foreign Currency Derivatives, before Tax			(174,000)	1,020,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			(380,000)	(279,000)
Other Comprehensive Income (Loss), Tax			$ 100,000	$ (202,000)