L.B. Foster (FSTR) 10-Q 6 May 20 2020 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2020	Apr. 29, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Commission File Number	000-10436
Entity Registrant Name	FOSTER L B CO
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	25-1324733
Entity Address, Street Name	415 Holiday Drive
Entity Address, Suite	Suite 100
Entity Address, City	Pittsburgh
Entity Address, State	PA
Entity Address, Postal Zip Code	15220
City Area Code	412
Local Phone Number	928-3400
Title of each class	Common stock, par value $0.01
Trading Symbol	FSTR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		10,706,390
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000352825
Current Fiscal Year End Date	--12-31

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 6,418	$ 14,178
Accounts receivable - net (Note 5)	78,160	78,575
Inventories - net (Note 6)	113,531	119,301
Other current assets	9,060	4,610
Total current assets	207,169	216,664
Property, plant, and equipment - net (Note 7)	82,942	82,314
Operating lease right-of-use assets - net (Note 8)	18,275	13,274
Other assets:
Goodwill (Note 4)	18,987	19,565
Other intangibles - net (Note 4)	41,616	43,514
Deferred tax assets (Note 15)	28,930	28,638
Other assets	1,156	1,202
TOTAL ASSETS	399,075	405,171
Current liabilities:
Accounts payable	63,874	66,361
Deferred revenue	10,629	8,446
Accrued payroll and employee benefits	7,861	14,096
Current portion of accrued settlement (Note 14)	8,000	8,000
Current maturities of long-term debt (Note 9)	2,731	2,905
Other accrued liabilities	14,386	16,936
Total current liabilities	107,481	116,744
Long-term debt (Note 9)	61,456	55,288
Deferred tax liabilities (Note 15)	4,657	4,751
Long-term portion of accrued settlement (Note 14)	32,000	32,000
Long-term operating lease liabilities (Note 8)	15,048	10,268
Other long-term liabilities	15,927	16,258
Stockholders’ equity:
Common stock, par value $0.01, authorized 20,000,000 shares; shares issued at March 31, 2020 and December 31, 2019, 11,115,779; shares outstanding at March 31, 2020 and December 31, 2019, 10,553,179 and 10,422,091, respectively	111	111
Paid-in capital	44,328	49,204
Retained earnings	155,659	157,525
Treasury stock - at cost, 562,600 and 693,688 common stock shares at March 31, 2020 and December 31, 2019, respectively	(12,896)	(16,795)
Accumulated other comprehensive loss	(24,696)	(20,183)
Total stockholders’ equity	162,506	169,862
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 399,075	$ 405,171

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	11,115,779	11,115,779
Common stock, shares outstanding (in shares)	10,553,179	10,422,091
Treasury stock shares - at cost, common stock (in shares)	562,600	693,688

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total net sales	$ 128,775	$ 150,469
Total cost of sales	107,118	121,307
Gross profit	21,657	29,162
Selling and administrative expenses	21,325	21,917
Amortization expense	1,463	1,712
Interest expense - net	817	1,355
Other expense (income) - net	746	(150)
(Loss) income before income taxes	(2,694)	4,328
Income tax (benefit) expense	(828)	638
Net (loss) income	$ (1,866)	$ 3,690
Basic earnings per common share (usd per share)	$ (0.18)	$ 0.36
Diluted earnings per common share (usd per share)	$ (0.18)	$ 0.35
Product
Total net sales	$ 96,885	$ 113,083
Total cost of sales	80,826	92,331
Service
Total net sales	31,890	37,386
Total cost of sales	$ 26,292	$ 28,976

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income		$ (1,866)	$ 3,690
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment		(3,707)	1,053
Unrealized loss on cash flow hedges, net of tax benefit of $296 and $0, respectively		(864)	(26)
Reclassification of pension liability adjustments to earnings, net of tax expense of $0 for all periods	[1]	58	93
Other comprehensive (loss) income		(4,513)	1,120
Comprehensive (loss) income		$ (6,379)	$ 4,810
[1]	Reclassifications out of accumulated other comprehensive loss for pension obligations are charged to selling and administrative expenses.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on cash flow hedge, tax	$ 296	$ 0
Reclassification of pension liability adjustments to earnings, tax	$ 24	$ 0

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (1,866)	$ 3,690
Adjustments to reconcile net (loss) income to cash used in operating activities:
Deferred income taxes	(58)	(166)
Depreciation	2,707	2,772
Amortization	1,463	1,712
Equity in income of nonconsolidated investments	0	(21)
Loss on sales and disposals of property, plant, and equipment	15	0
Stock-based compensation	680	855
Change in operating assets and liabilities:
Accounts receivable	(363)	(13,166)
Inventories	3,577	(17,463)
Other current assets	(3,928)	(1,961)
Prepaid income tax	(2,258)	(108)
Other noncurrent assets	(4,939)	591
Accounts payable	532	12,653
Deferred revenue	2,262	7,542
Accrued payroll and employee benefits	(6,094)	(5,438)
Accrued settlement	0	(2,000)
Other current liabilities	(3,124)	(2,305)
Other long-term liabilities	4,504	(733)
Net cash used in operating activities	(6,890)	(13,546)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	1	59
Capital expenditures on property, plant, and equipment	(4,444)	(2,572)
Net cash used in investing activities	(4,443)	(2,513)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(39,360)	(43,414)
Proceeds from debt	45,362	58,614
Treasury stock acquisitions	(1,657)	(526)
Net cash provided by financing activities	4,345	14,674
Effect of exchange rate changes on cash and cash equivalents	(772)	142
Net decrease in cash and cash equivalents	(7,760)	(1,243)
Cash and cash equivalents at beginning of period	14,178	10,282
Cash and cash equivalents at end of period	6,418	9,039
Supplemental disclosure of cash flow information:
Interest paid	807	1,179
Income taxes paid	$ 1,173	$ 904

Condensed Consolidated Statem_5

Condensed Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Adjustment to adopt ASU 2018-02	$ 0			$ 633		$ (633)
Beginning balance at Dec. 31, 2018	122,119	$ 111	$ 48,040	114,324	$ (18,165)	(22,191)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	3,690			3,690
Other comprehensive loss, net of tax:
Pension liability adjustment	93					93
Foreign currency translation adjustment	1,053					1,053
Unrealized derivative loss on cash flow hedges	(26)					(26)
Issuance of common shares, net of share withheld for taxes	(526)		(1,495)		969
Stock-based compensation	855		855
Ending balance at Mar. 31, 2019	127,258	111	47,400	118,647	(17,196)	(21,704)
Beginning balance at Dec. 31, 2019	169,862	111	49,204	157,525	(16,795)	(20,183)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(1,866)			(1,866)
Other comprehensive loss, net of tax:
Pension liability adjustment	58					58
Foreign currency translation adjustment	(3,707)					(3,707)
Unrealized derivative loss on cash flow hedges	(864)					(864)
Issuance of common shares, net of share withheld for taxes	(1,657)		(5,556)		3,899
Stock-based compensation	680		680
Ending balance at Mar. 31, 2020	$ 162,506	$ 111	$ 44,328	$ 155,659	$ (12,896)	$ (24,696)

Condensed Consolidated Statem_6

Condensed Consolidated Statements Of Stockholders' Equity (Parentheticals) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Shares issued (in shares)	131,088	38,340

Financial Statements

Financial Statements	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Financial Statements	Financial Statements Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all estimates and adjustments (consisting of normal recurring accruals, unless otherwise stated herein) considered necessary for a fair presentation of the financial position of L.B. Foster Company and subsidiaries as of March 31, 2020 and December 31, 2019, its Condensed Consolidated Statements of Operations, its Condensed Consolidated Statements of Stockholders' Equity, and its Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2020 and 2019, have been included. However, actual results could differ from those estimates. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. The Condensed Consolidated Balance Sheet as of December 31, 2019 was derived from audited financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and footnotes thereto included in the L.B. Foster Company’s Annual Report on Form 10-K for the year ended December 31, 2019. In this Quarterly Report on Form 10-Q, references to “we,” “us,” “our,” and the “Company” refer collectively to L.B. Foster Company and its consolidated subsidiaries. Recently Issued Accounting Standards In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. (“ASU”) 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2020-04”), which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The amendments are effective for all entities as of March 12, 2020 through December 31, 2022. We are currently evaluating the impacts of the provisions of ASU 2020-04 on our financial condition, results of operations, and cash flows. Recently Adopted Accounting Standards In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). The ASU added a new impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses, presenting financial assets measured at amortized cost basis at the net amount expected to be collected upon inception. The CECL model applies to trade receivables, other receivables, and most debt instruments. The CECL model does not have a minimum threshold for recognition of impairment losses, and entities must measure expected credit losses on assets that have a low risk of loss. The Company adopted the provisions of ASU 2016-13 on January 1, 2020, using the modified retrospective approach as of the beginning of the period of adoption. In accordance with the standard, the Company evaluated its allowance for credit losses for trade receivables and contract assets, the only assets held by the Company that were impacted by the scope of the standard. The adoption of ASU 2016-13 had no material effect on the Company's financial position or results of operations, and no adjustment to January 1, 2020 retained earnings was recorded; the Company has presented the disclosures required by this new standard in Note 5 Accounts Receivable and Note 6 Inventory. In August 2018, the FASB issued ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software” (“ASU 2018-15”). The ASU requires capitalization of certain implementation costs incurred in a cloud computing arrangement that qualifies as a service contract. The amendments in the ASU are effective for fiscal years beginning after December 15, 2019 and for interim periods therein with early adoption permitted. The adoption of the ASU had no impact on the Company’s consolidated financial statements and related disclosures.

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Business Segments	Business Segments The Company is a leading manufacturer and distributor of products and provider of services for transportation and energy infrastructure with locations in North America and Europe. The Company is organized and operates in three different operating segments: the Rail Products and Services segment, the Construction Products segment, and the Tubular and Energy Services segment. The segments represent components of the Company (a) that engage in activities from which revenue is generated and expenses are incurred; (b) whose operating results are regularly reviewed by the Chief Operating Decision Maker (“CODM”), who makes decisions about resources to be allocated to the segments, and (c) for which discrete financial information is available. Operating segments are evaluated on their segment profit contribution to the Company's consolidated results. Other income and expenses, interest, income taxes, and certain other items are managed on a consolidated basis. The Company's segment accounting policies are the same as those described in Note 2. Business Segments of the Notes to the Company's Consolidated Financial Statements contained in its Annual Report on Form 10-K for the year-ended December 31, 2019. The following table illustrates the Company's revenues and profit from operations by segment for the periods indicated: Three Months Ended Three Months Ended Net Sales Segment Profit (Loss) Net Sales Segment Profit Rail Products and Services $ 70,204 $ 1,171 $ 75,694 $ 3,479 Construction Products 29,034 (1,639) 37,345 834 Tubular and Energy Services 29,537 612 37,430 4,688 Total $ 128,775 $ 144 $ 150,469 $ 9,001 Segment profit (loss) from operations, as shown above, includes allocated corporate operating expenses. Operating expenses related to corporate headquarter functions that directly support the segment activity are allocated based on segment headcount, revenue contribution, or activity of the business units within the segments, based on the corporate activity type provided to the segment. The expense allocation excludes certain corporate costs that are separately managed from the segments. The following table provides a reconciliation of segment net profit from operations to the Company’s consolidated total: Three Months Ended 2020 2019 Profit for reportable segments $ 144 $ 9,001 Interest expense - net (817) (1,355) Other income - net 135 150 Unallocated corporate expenses and other unallocated charges (2,156) (3,468) (Loss) income before income taxes $ (2,694) $ 4,328 The following table illustrates assets of the Company by segment: March 31, December 31, Rail Products and Services $ 170,915 $ 186,323 Construction Products 88,257 83,049 Tubular and Energy Services 81,220 77,320 Unallocated corporate assets 58,683 58,479 Total $ 399,075 $ 405,171

Revenue

Revenue	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Revenue from products or services provided to customers over time accounted for 25.5% and 27.7% of revenue for the three months ended March 31, 2020 and 2019, respectively. Revenue under these long-term agreements is generally recognized over time either using an input measure based upon the proportion of actual costs incurred to estimated total project costs or an input measure based upon actual labor costs as a percentage of estimated total labor costs, depending upon which measure the Company believes best depicts the Company’s performance to date under the terms of the contract. Revenue recognized over time using an input measure was $24,432 and $31,837 for the three months ended March 31, 2020 and 2019, respectively. A certain portion of the Company’s revenue recognized over time under these long-term agreements is recognized using an output method, specifically units delivered, based upon certain customer acceptance and delivery requirements. Revenue recognized over time using an output measure was $8,345 and $9,911 for the three months ended March 31, 2020 and 2019, respectively. As of March 31, 2020 and December 31, 2019, the Company had contract assets of $32,438 and $37,032, respectively, that were recorded in “Inventories - net” within the Condensed Consolidated Balance Sheets. As of March 31, 2020 and December 31, 2019, the Company had contract liabilities of $5,840 and $4,472, respectively, that were recorded in “Deferred revenue” within the Condensed Consolidated Balance Sheets. The majority of the Company’s revenue is from products transferred and services rendered to customers at a point in time. Point in time revenue accounted for 74.5% and 72.3% of revenue for the three months ended March 31, 2020 and 2019, respectively. The Company recognizes revenue at the point in time at which the customer obtains control of the product or service, which is generally when the product title passes to the customer upon shipment or the service has been rendered to the customer. In limited cases, title does not transfer and revenue is not recognized until the customer has received the products at a physical location. The following table summarizes the Company's net sales by major product and service category: Three Months Ended 2020 2019 Rail Products $ 43,562 $ 46,206 Rail Technologies 26,642 29,488 Rail Products and Services 70,204 75,694 Piling and Fabricated Bridge 18,391 23,732 Precast Concrete Products 10,643 13,613 Construction Products 29,034 37,345 Test, Inspection, and Threading Services 9,704 14,724 Protective Coatings and Measurement Systems 19,833 22,706 Tubular and Energy Services 29,537 37,430 Total net sales $ 128,775 $ 150,469 Net sales by the timing of the transfer of products and services was as follows: Three Months Ended March 31, 2020 Rail Products and Construction Tubular and Energy Total Point in time $ 54,888 $ 16,883 $ 24,227 $ 95,998 Over time 15,316 12,151 5,310 32,777 Total net sales $ 70,204 $ 29,034 $ 29,537 $ 128,775 Three Months Ended March 31, 2019 Rail Products and Construction Tubular and Energy Total Point in time $ 56,492 $ 23,095 $ 29,134 $ 108,721 Over time 19,202 14,250 8,296 41,748 Total net sales $ 75,694 $ 37,345 $ 37,430 $ 150,469 The timing of revenue recognition, billings, and cash collections results in billed receivables, costs in excess of billings (contract assets, included in “Inventories - net”), and billings in excess of costs (contract liabilities, included in “Deferred revenue”) on the Condensed Consolidated Balance Sheets. Significant changes in contract assets during the three months ended March 31, 2020 resulted from transfers of $15,600 at the beginning of the period from contract assets to receivables. Significant changes in contract liabilities during the three months ended March 31, 2020 resulted from increases of $2,943 due to billings in excess of costs, excluding amounts recognized as revenue during the period. Contract liabilities were reduced due to revenue recognized during the three months ended March 31, 2020 and 2019 of $2,614 and $948, respectively, that were included in the contract liabilities at the beginning of each period. As of March 31, 2020, the Company had approximately $237,691 of remaining performance obligations, which is also referred to as backlog. Approximately 7.9% of the March 31, 2020 backlog was related to projects that are anticipated to extend beyond March 31, 2021.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table presents the goodwill balance by reportable segment: Rail Products and Construction Tubular and Energy Total Balance as of December 31, 2019 $ 14,418 $ 5,147 $ — $ 19,565 Foreign currency translation impact (578) — — (578) Balance as of March 31, 2020 $ 13,840 $ 5,147 $ — $ 18,987 The Company performs goodwill impairment tests annually during the fourth quarter, and also performs interim goodwill impairment tests if it is determined that it is more likely than not that the fair value of a reporting unit is less than the carrying amount. Qualitative factors are assessed to determine whether it is more likely than not that the fair value of a reporting unit is less than the carrying amount. No interim goodwill impairment test was required as a result of the evaluation of qualitative factors as of March 31, 2020. The components of the Company’s intangible assets were as follows: March 31, 2020 Weighted Average Gross Accumulated Net Non-compete agreements 5 $ 45 $ (39) $ 6 Patents 10 345 (176) 169 Customer relationships 18 36,863 (14,222) 22,641 Trademarks and trade names 16 7,736 (3,667) 4,069 Technology 14 35,567 (20,836) 14,731 $ 80,556 $ (38,940) $ 41,616 December 31, 2019 Weighted Average Gross Accumulated Net Non-compete agreements 4 $ 1,272 $ (1,259) $ 13 Patents 10 377 (188) 189 Customer relationships 18 37,498 (13,945) 23,553 Trademarks and trade names 16 7,787 (3,551) 4,236 Technology 13 35,728 (20,205) 15,523 $ 82,662 $ (39,148) $ 43,514 Intangible assets are amortized over their useful lives, which range from 5 to 25 years, with a total weighted average amortization period of approximately 16 years as of March 31, 2020. Amortization expense was $1,463 and $1,712 for the three months ended March 31, 2020 and 2019, respectively. During the three months ended March 31, 2020, certain fully amortized intangible assets of $1,186 related to non-compete agreements were eliminated from gross intangible assets and accumulated amortization. As of March 31, 2020, estimated amortization expense for the remainder of 2020 and thereafter was as follows: Amortization Expense Remainder of 2020 $ 4,362 2021 5,786 2022 5,703 2023 5,231 2024 4,204 2025 and thereafter 16,330 $ 41,616

Accounts Receivable

Accounts Receivable	3 Months Ended
	Mar. 31, 2020
Accounts Receivable Additional Disclosures [Abstract]
Accounts Receivable	Accounts Receivable Credit is extended based upon an evaluation of the customer’s financial condition and, while collateral is not required, the Company periodically receives surety bonds that guarantee payment. Credit terms are consistent with industry standards and practices. The amounts of trade accounts receivable as of March 31, 2020 and December 31, 2019 have been reduced by an allowance for doubtful accounts of $1,255 and $1,100, respectively. Changes in reserves for uncollectable accounts, which are recorded as part of “Selling and administrative expenses” in the Condensed Consolidated Statements of Operations, resulted in expense of $164 and $100 for the three months ended March 31, 2020 and 2019, respectively. On January 1, 2020, the Company adopted ASU 2016-13 and all the related amendments using the modified retrospective approach, which did not result in any changes to the previously reported financial information. The updates related to ASU 2016-13 were applied to assets held as of January 1, 2020. In accordance with adoption of the new standard, the Company evaluated and revised its policies surrounding the allowance for credit losses for trade receivables. The Company established the allowance for credit losses by calculating the amount to reserve based on the age of a given trade receivable and considering historical collection patterns and bad debt expense experience, in addition to any other relevant subjective adjustments to individual receivables made by management. The Company also considered current and expected future market and other conditions. Trade receivables are pooled within the calculation based on age range, which appropriately groups receivables of similar credit risk together. The established reserve thresholds to calculate the allowance for credit loss are based on and supported by historic collection patterns and bad debt expense incurred by the Company, as well as the expectation that collection patterns and bad debt expense will continue to adhere to patterns observed in recent years, which was formed based on trends observed as well as current and expected future conditions. Management maintains high-quality credit review practices as well as positive customer relationships that further mitigate credit risk. Management will monitor and review the contributing factors to our reserve, and make any appropriate revisions as they may become necessary. The Company’s adoption of ASU 2016-13 did not require material changes to the allowance for credit losses and no adjustment was recorded to opening retained earnings.

Inventory

Inventory	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventory	Inventory Inventories as of March 31, 2020 and December 31, 2019 are summarized in the following table: March 31, December 31, Finished goods $ 53,898 $ 59,864 Contract assets 32,438 37,032 Work-in-process 7,006 3,728 Raw materials 20,189 18,677 Inventories - net $ 113,531 $ 119,301 Inventories of the Company are valued at average cost or net realizable value, whichever is lower. In accordance with adoption of ASU 2016-13, the Company evaluated and revised its policies relating to the allowance for credit losses as they pertain to contract assets, as these assets held in inventory will convert to trade receivables upon recognition of revenue for the contract to which they pertain. In addition to contract-specific provisions for which reserves were historically established as a result of our robust contract review process, management also elected to implement a standard credit loss provision over any remaining contract assets considered to be similar low risk of credit loss. The development of these estimates is based on historic collection trends, accuracy of contract margin reporting, as well as the expectation that collection patterns, margin accuracy, and bad debt expense will continue to adhere to patterns observed in recent years. These expectations were formed based on trends observed as well as current and expected future conditions. Management will monitor and review the contributing factors to our reserve, and make any appropriate revisions as they become necessary.

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant, and equipment as of March 31, 2020 and December 31, 2019 consisted of the following: March 31, December 31, Land $ 11,041 $ 11,076 Improvements to land and leaseholds 17,172 17,172 Buildings 34,619 35,241 Machinery and equipment, including equipment under finance leases 122,983 122,599 Construction in progress 7,692 5,234 Gross property, plant, and equipment 193,507 191,322 Less accumulated depreciation and amortization, including accumulated amortization of finance leases (110,565) (109,008) Property, plant, and equipment - net $ 82,942 $ 82,314 Depreciation expense was $2,707 and $2,772 for the three months ended March 31, 2020 and 2019, respectively. We review our property, plant, and equipment for recoverability whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. We recognize an impairment loss if the carrying amount of a long-lived asset is not recoverable and exceeds its fair value. There were no impairments of property, plant, and equipment during the three months ended March 31, 2020 and 2019.

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	Leases We determine if an arrangement is a lease at its inception. Operating leases are included in “Operating lease right-of-use assets,” “Other current liabilities,” and “Long-term operating lease liabilities” within our Condensed Consolidated Balance Sheets. Finance leases are included in “Property, plant, and equipment - net,” “Current maturities of long-term debt,” and “Long-term debt” in our Condensed Consolidated Balance Sheets. The Company has operating and finance leases for manufacturing facilities, corporate offices, sales offices, vehicles, and certain equipment. As of March 31, 2020, our leases had remaining lease terms of 1 to 12 years, some of which include options to extend the leases for up to 12 years, and some of which include options to terminate the leases within 1 year. The balance sheet components of the Company's leases were as follows as of March 31, 2020 and December 31, 2019: March 31, December 31, Operating leases Operating lease right-of-use assets $ 18,275 $ 13,274 Other current liabilities $ 3,227 $ 3,006 Long-term operating lease liabilities 15,048 10,268 Total operating lease liabilities $ 18,275 $ 13,274 Finance leases Property, plant, and equipment $ 3,469 $ 3,518 Accumulated amortization (3,095) (2,943) Property, plant, and equipment - net $ 374 $ 575 Current maturities of long-term debt $ 231 $ 405 Long-term debt 143 170 Total finance lease liabilities $ 374 $ 575 The components of lease expense within the Company's statements of operations were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Finance lease cost: Amortization of finance leases $ 184 $ 178 Interest on lease liabilities 18 9 Operating lease cost 980 916 Sublease income (20) (9) Total lease cost $ 1,162 $ 1,094 The cash flow components of the Company's leases were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (1,210) $ (1,079) Financing cash flows related to finance leases (184) (181) Right-of-use assets obtained in exchange for new lease liabilities: Operating leases $ 5,981 $ 447 The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows: Three Months Ended 2020 2019 Operating lease weighted-average remaining lease term 7 6 Operating lease weighted-average discount rate 5.2 % 4.9 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.3 % 4.3 % As of March 31, 2020, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2020 and thereafter were as follows: Operating Leases Finance Leases Remaining 2020 $ 2,877 $ 266 2021 3,012 131 2022 2,689 47 2023 2,483 17 2024 2,422 11 2025 and thereafter 7,577 — Total undiscounted lease payments 21,060 472 Interest (2,785) (98) Total $ 18,275 $ 374
Leases	Leases We determine if an arrangement is a lease at its inception. Operating leases are included in “Operating lease right-of-use assets,” “Other current liabilities,” and “Long-term operating lease liabilities” within our Condensed Consolidated Balance Sheets. Finance leases are included in “Property, plant, and equipment - net,” “Current maturities of long-term debt,” and “Long-term debt” in our Condensed Consolidated Balance Sheets. The Company has operating and finance leases for manufacturing facilities, corporate offices, sales offices, vehicles, and certain equipment. As of March 31, 2020, our leases had remaining lease terms of 1 to 12 years, some of which include options to extend the leases for up to 12 years, and some of which include options to terminate the leases within 1 year. The balance sheet components of the Company's leases were as follows as of March 31, 2020 and December 31, 2019: March 31, December 31, Operating leases Operating lease right-of-use assets $ 18,275 $ 13,274 Other current liabilities $ 3,227 $ 3,006 Long-term operating lease liabilities 15,048 10,268 Total operating lease liabilities $ 18,275 $ 13,274 Finance leases Property, plant, and equipment $ 3,469 $ 3,518 Accumulated amortization (3,095) (2,943) Property, plant, and equipment - net $ 374 $ 575 Current maturities of long-term debt $ 231 $ 405 Long-term debt 143 170 Total finance lease liabilities $ 374 $ 575 The components of lease expense within the Company's statements of operations were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Finance lease cost: Amortization of finance leases $ 184 $ 178 Interest on lease liabilities 18 9 Operating lease cost 980 916 Sublease income (20) (9) Total lease cost $ 1,162 $ 1,094 The cash flow components of the Company's leases were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (1,210) $ (1,079) Financing cash flows related to finance leases (184) (181) Right-of-use assets obtained in exchange for new lease liabilities: Operating leases $ 5,981 $ 447 The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows: Three Months Ended 2020 2019 Operating lease weighted-average remaining lease term 7 6 Operating lease weighted-average discount rate 5.2 % 4.9 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.3 % 4.3 % As of March 31, 2020, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2020 and thereafter were as follows: Operating Leases Finance Leases Remaining 2020 $ 2,877 $ 266 2021 3,012 131 2022 2,689 47 2023 2,483 17 2024 2,422 11 2025 and thereafter 7,577 — Total undiscounted lease payments 21,060 472 Interest (2,785) (98) Total $ 18,275 $ 374

Long-Term Debt and Related Mann

Long-Term Debt and Related Manners	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Long-Term Debt and Related Manners	Long-term Debt and Related Matters Long-term debt consisted of the following: March 31, December 31, Revolving credit facility $ 40,688 $ 33,868 Term loan 23,125 23,750 Finance leases and financing agreements 374 575 Total 64,187 58,193 Less current maturities (2,731) (2,905) Long-term portion $ 61,456 $ 55,288 On April 30, 2019, the Company, its domestic subsidiaries, and certain of its Canadian and European subsidiaries (collectively, the “Borrowers”), entered into the Third Amended and Restated Credit Agreement (“Amended Credit Agreement”) with PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank, N.A., and BMO Harris Bank, N.A. This Amended Credit Agreement modified the prior revolving credit facility, which had a maximum credit line of $195,000 and extended the maturity date from March 13, 2020 to April 30, 2024. The Amended Credit Agreement provides for a five The Company’s and the domestic, Canadian, and United Kingdom guarantors’ (the “Guarantors”) obligations under the Amended Credit Agreement are secured by the grant of a security interest by the Borrowers and Guarantors in substantially all of the personal property owned by such entities. Additionally, the equity interests in each of the loan parties, other than the Company, and the equity interests held by each loan party in their domestic subsidiaries, have been pledged to the lenders as collateral for the lending obligations. Borrowings under the Amended Credit Agreement bear interest at rates based upon either the base rate or Euro-rate plus applicable margins. Applicable margins are dictated by the ratio of the Company’s total net indebtedness to the Company’s consolidated EBITDA for four trailing quarters, as defined in the Amended Credit Agreement. The base rate is the highest of (a) the Overnight Bank Funding Rate plus 50 basis points, (b) the Prime Rate, or (c) the Daily Euro-rate plus 100 basis points (each as defined in the Amended Credit Agreement). The base rate and Euro-rate spreads range from 25 to 125 basis points and 125 to 225 basis points, respectively. The Amended Credit Agreement includes three financial covenants: (a) Maximum Gross Leverage Ratio, defined as the Company’s consolidated Indebtedness divided by the Company’s consolidated EBITDA, which must not exceed (i) 3.25 to 1.00 for all testing periods other than during an Acquisition Period, as defined in the Amended Credit Agreement, and (ii) 3.50 to 1.00 for all testing periods occurring during an Acquisition Period; (b) Minimum Consolidated Fixed Charge Coverage Ratio, defined as the Company's consolidated EBITDA divided by the Company's Fixed Charges, as defined in the Amended Credit Agreement, which must be a minimum of 1.25 to 1.00; and (c) Minimum Working Capital to Revolving Facility Usage Ratio, defined as the sum of the inventory and accounts receivable of the Borrowers and certain other Guarantors divided by the Revolving Facility Usage, as defined in the Amended Credit Agreement, which must be a minimum 1.40 to 1.00. The Amended Credit Agreement permits the Company to pay dividends and make distributions and redemptions with respect to its stock provided no event of default or potential default (as defined in the Amended Credit Agreement) has occurred prior to or after giving effect to the dividend, distribution, or redemption. Additionally, the Amended Credit Agreement permits the Company to complete acquisitions so long as (a) no event of default or potential default has occurred prior to or as a result of such acquisition; (b) the liquidity of the Borrowers is not less than $25,000 prior to and after giving effect to such acquisition; and (c) the aggregate consideration for the acquisition does not exceed: (i) $50,000 per acquisition; (ii) $50,000 in the aggregate for multiple acquisitions entered into during four consecutive quarters; and (iii) $100,000 in the aggregate over the term of the Amended Credit Agreement. Other restrictions exist at all times including, but not limited to, limitations on the Company’s sale of assets and the incurrence by either the Borrowers or the non-borrower subsidiaries of the Company of other indebtedness, guarantees, and liens. As of March 31, 2020, L.B. Foster was in compliance with the covenants in the Amended Credit Agreement. As of March 31, 2020, the Company had outstanding letters of credit of approximately $559 and had net available borrowing capacity of $98,753. The maturity date of the facility is April 30, 2024.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company determines the fair value of assets and liabilities based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. The fair values are based on assumptions that market participants would use when pricing an asset or liability, including assumptions about risk and the risks inherent in valuation techniques and the inputs to valuations. The fair value hierarchy is based on whether the inputs to valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s own assumptions of what market participants would use. The fair value hierarchy includes three levels of inputs that may be used to measure fair value as described below: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs that are not corroborated by market data. The classification of a financial asset or liability within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. Cash equivalents - Included within “Cash and cash equivalents” are investments in non-domestic term deposits. The carrying amounts approximate fair value because of the short maturity of the instruments. LIBOR-based interest rate swaps - To reduce the impact of interest rate changes on outstanding variable-rate debt, the Company entered into forward starting LIBOR-based interest rate swaps with notional values totaling $50,000. The fair value of the interest rate swaps is based on market-observable forward interest rates and represents the estimated amount that the Company would pay to terminate the agreements. As such, the swap agreements are classified as Level 2 within the fair value hierarchy. As of March 31, 2020 and December 31, 2019, the interest rate swaps were recorded within “Other accrued liabilities.” Fair Value Measurements at Reporting Date Fair Value Measurements at Reporting Date March 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Term deposits $ 16 $ 16 $ — $ — $ 17 $ 17 $ — $ — Total assets $ 16 $ 16 $ — $ — $ 17 $ 17 $ — $ — Interest rate swaps $ 1,640 $ — $ 1,640 $ — $ 480 $ — $ 480 $ — Total liabilities $ 1,640 $ — $ 1,640 $ — $ 480 $ — $ 480 $ — The interest rate swaps are accounted for as cash flow hedges and the objective of the hedges is to offset the expected interest variability on payments associated with the interest rate on our debt. The gains and losses related to the interest rate swaps are reclassified from “Accumulated other comprehensive loss” in our Condensed Consolidated Balance Sheets and included in “Interest expense - net” in our Condensed Consolidated Statements of Operations as the interest expense from our debt is recognized. For the three months ended March 31, 2020 and 2019, we recognized interest expense of $73 and interest income of $65, respectively, from interest rate swaps. In accordance with the provisions of the FASB's Accounting Standards Codification (“ASC”) Topic 820, “Fair Value Measurement,” the Company measures certain nonfinancial assets and liabilities at fair value, which are recognized or disclosed on a nonrecurring basis.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share (Share amounts in thousands) The following table sets forth the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended 2020 2019 Numerator for basic and diluted (loss) earnings per common share: Net (loss) income $ (1,866) $ 3,690 Denominator: Weighted average shares outstanding 10,478 10,384 Denominator for basic (loss) earnings per common share 10,478 10,384 Effect of dilutive securities: Stock compensation plans — 63 Dilutive potential common shares — 63 Denominator for diluted (loss) earnings per common share - adjusted weighted average shares outstanding 10,478 10,447 Basic (loss) earnings per common share $ (0.18) $ 0.36 Diluted (loss) earnings per common share $ (0.18) $ 0.35 There were approximately 190 anti-dilutive shares during the three months ended March 31, 2020 excluded from the above calculation. There were no anti-dilutive shares during the three months ended March 31, 2019.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]
Stock-based Compensation	Stock-based Compensation The Company applies the provisions of ASC 718, “Compensation – Stock Compensation,” to account for the Company’s stock-based compensation. Stock-based compensation cost is measured at the grant date based on the calculated fair value of the award and is recognized over the employees’ requisite service periods. The Company recorded stock compensation expense related to restricted stock awards and performance share units of $680 and $855 for the three months ended March 31, 2020 and 2019, respectively. As of March 31, 2020, unrecognized compensation expense for unvested awards approximated $5,893. The Company will recognize this expense over the upcoming 4 years through March 2024. Shares issued as a result of vested stock-based compensation awards generally will be from previously issued shares that have been reacquired by the Company and held as treasury stock or authorized and previously unissued common stock. Restricted Stock Awards and Performance Share Units Under the 2006 Omnibus Plan, the Company grants eligible employees restricted stock and performance share units. The forfeitable restricted stock awards granted generally time-vest ratably over a three one three Since May 1, 2017, non-employee directors have been permitted to defer receipt of annual stock awards and equity elected to be received in lieu of quarterly cash compensation. If so elected, these deferred stock units will be issued as common stock six months after separation from their service on the Board of Directors. Since May 2018, there have been no non-employee directors who elected the option to receive deferred stock units of the Company’s common stock in lieu of director cash compensation. In February 2020, the Compensation Committee approved the 2020 Performance Share Unit Program and the Executive Annual Incentive Compensation Plan (consisting of cash and equity components). The following table summarizes the restricted stock awards, deferred stock units, and performance share units activity for the three months ended March 31, 2020: Restricted Deferred Performance Weighted Average Outstanding as of December 31, 2019 150,799 54,078 331,148 $ 18.50 Granted 66,531 — 105,857 17.87 Vested (62,782) — (163,224) 16.33 Adjustment for incentive awards not expected to vest — — (2,477) 33.61 Outstanding as of March 31, 2020 154,548 54,078 271,304 $ 18.45

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2020
Employee-related Liabilities [Abstract]
Retirement Plans	Retirement Plans Retirement Plans The Company has three retirement plans that cover its hourly and salaried employees in the United States: one defined benefit plan, which is frozen, and two defined contribution plans. Employees are eligible to participate in the appropriate plan based on employment classification. The Company’s contributions to the defined benefit and defined contribution plans are governed by the Employee Retirement Income Security Act of 1974 (“ERISA”) and the Company’s policy and investment guidelines applicable to each respective plan. The Company’s policy is to contribute at least the minimum in accordance with the funding standards of ERISA. The Company maintains two defined contribution plans for its employees in Canada, as well as one post-retirement benefit plan. The Company also maintains two defined contribution plans and one defined benefit plan for its employees in the United Kingdom. United States Defined Benefit Plan Net periodic pension costs for the United States defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended 2020 2019 Interest cost $ 56 $ 162 Expected return on plan assets (58) (180) Recognized net actuarial loss 13 31 Net periodic pension cost $ 11 $ 13 The Company expects to make contributions to its United States defined benefit pension plan of $660 during the remainder of 2020. United Kingdom Defined Benefit Plan Net periodic pension costs for the United Kingdom defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended 2020 2019 Interest cost $ 44 $ 54 Expected return on plan assets (59) (62) Amortization of prior service costs and transition amount 6 11 Recognized net actuarial loss 64 53 Net periodic pension cost $ 55 $ 56 United Kingdom regulations require trustees to adopt a prudent approach to funding required contributions to defined benefit pension plans. The Company anticipates contributions of approximately $297 to the United Kingdom pension plan during 2020. For the three months ended March 31, 2020, the Company contributed approximately $77 to the plan. Defined Contribution Plans The Company sponsors six defined contribution plans for hourly and salaried employees across our domestic and international facilities. The following table summarizes the expense associated with the contributions made to these plans: Three Months Ended 2020 2019 United States $ (138) $ 550 Canada 39 38 United Kingdom 111 107 $ 12 $ 695

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities Product Liability Claims The Company is subject to product warranty claims that arise in the ordinary course of its business. For certain manufactured products, the Company maintains a product warranty accrual, which is adjusted on a monthly basis as a percentage of cost of sales. In addition, the product warranty accrual is adjusted periodically based on the identification or resolution of known individual product warranty claims. The following table sets forth the Company’s product warranty accrual: Warranty Liability Balance as of December 31, 2019 $ 1,222 Additions to warranty liability 47 Warranty liability utilized (251) Balance as of March 31, 2020 $ 1,018 Union Pacific Railroad (“UPRR”) Concrete Tie Matter On March 13, 2019, the Company and its subsidiary, CXT Incorporated (“CXT”), entered into a Settlement Agreement (the “Settlement Agreement”) with UPRR to resolve the pending litigation in the matter of Union Pacific Railroad Company v. L.B. Foster Company and CXT Incorporated , Case No. CI 15-564, in the District Court for Douglas County, Nebraska. Under the Settlement Agreement, the Company and CXT will pay UPRR the aggregate amount of $50,000 without pre-judgment interest, which began with a $2,000 immediate payment, and with the remaining $48,000 paid in installments over a six The expected payments under the UPRR Settlement Agreement for the remainder of the year ending December 31, 2020 and thereafter are as follows: Year Ending December 31, Remainder of 2020 $ 8,000 2021 8,000 2022 8,000 2023 8,000 2024 8,000 Total $ 40,000 Environmental and Legal Proceedings The Company is subject to national, state, foreign, provincial, and/or local laws and regulations relating to the protection of the environment. The Company’s efforts to comply with environmental regulations may have an adverse effect on its future earnings. On June 5, 2017, a General Notice Letter was received from the United States Environmental Protection Agency (“EPA”) indicating that the Company may be a potentially responsible party (“PRP”) regarding the Portland Harbor Superfund Site cleanup along with numerous other companies. More than 140 other companies received such a notice. The Company and a predecessor owned and operated a facility near the harbor site for a period prior to 1982. The net present value and undiscounted costs of the selected remedy throughout the harbor site are estimated by the EPA to be approximately $1.1 billion and $1.7 billion, respectively, and the remedial work is expected to take as long as 13 years to complete. The Company is reviewing the basis for its identification by the EPA and the nature of the historic operations of a Company predecessor near the site. Additionally, the Company executed a PRP agreement which provides for a private allocation process among almost 100 PRPs in a working group whose work is ongoing. On March 26, 2020, the EPA issued a Unilateral Administrative Order to two parties requiring them to perform remedial design work for that portion of the Harbor Superfund Site that includes the area closest to the facility; the Company was not a recipient of this Unilateral Administrative Order. We cannot predict the ultimate impact of these proceedings because of the large number of PRPs involved throughout the harbor site, the degree of contamination of various wastes, varying environmental impacts throughout the harbor site, the scarcity of data related to the facility once operated by the Company and a predecessor, and the speculative nature of the remediation costs. Based upon information currently available, management does not believe that the Company’s alleged PRP status regarding the Portland Harbor Superfund Site or other compliance with the present environmental protection laws will have a material adverse effect on the financial condition, results of operations, cash flows, competitive position, or capital expenditures of the Company. As of March 31, 2020 and December 31, 2019, the Company maintained environmental reserves approximating $6,052 and $6,068, respectively. The following table sets forth the Company’s environmental obligation: Environmental liability Balance as of December 31, 2019 $ 6,068 Environmental obligations utilized (16) Balance as of March 31, 2020 $ 6,052 The Company is also subject to other legal proceedings and claims that arise in the ordinary course of its business. Legal actions are subject to inherent uncertainties, and future events could change management's assessment of the probability or estimated amount of potential losses from pending or threatened legal actions. Based on available information, it is the opinion of management that the ultimate resolution of pending or threatened legal actions, both individually and in the aggregate, will not result in losses having a material adverse effect on the Company's financial position or liquidity as of March 31, 2020. If management believes that, based on available information, it is at least reasonably possible that a material loss (or additional material loss in excess of any accrual) will be incurred in connection with any legal actions, the Company discloses an estimate of the possible loss or range of loss, either individually or in the aggregate, as appropriate, if such an estimate can be made, or discloses that an estimate cannot be made. Based on the Company's assessment as of March 31, 2020, no such disclosures were considered necessary.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFor the three months ended March 31, 2020 and 2019, the Company recorded an income tax benefit of $828 on pre-tax losses of $2,694 and income tax expense of $638 on pre-tax income of $4,328, respectively, for an effective income tax rate of 30.7% and 14.7%, respectively. The Company's effective income tax rate for the three months ended March 31, 2020 differed from the federal statutory rate of 21% primarily due to state income taxes and nondeductible expenses.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 30, 2020, the Company approved the permanent closure of three operating locations servicing the U.S. Niobrara and Bakken oil and gas production regions and the discontinuance of mobile services for the Permian production region within our Test, Inspection, and Threading Services business unit. These closures are a result of the Company’s continuing strategic review of operations serving the U.S. oil and gas market, which includes the events surrounding the COVID-19 pandemic. With the deterioration of the oil and gas market and unfavorable outlook, the industry expects significant difficulties in funding ongoing development activity that requires the Company's services. The Company believes these actions will strengthen its core businesses, result in improved operating profitability, and allow for the reallocation of resources and investment opportunities to provide sustainable value to its shareholders. The Company expects the closure of these operations to be substantially completed during 2020. As a result of these activities, the Company expects to incur certain exit and disposal charges consisting of relocation and employee retention expenses, as well as asset impairments, site clean-up, and facility restoration expenses, totaling approximately $5,500 to $7,000 in its Tubular and Energy Services operating segment during the second quarter and remainder of 2020. These expenses consist of estimated cash charges of approximately $1,500 to $2,500 and estimated non-cash charges of approximately $4,000 to $4,500. The approximate expense resulting from these actions could change materially as a result of certain factors including unknown or unforeseen costs as part of winding up these operations.

Financial Statements (Policies)

Financial Statements (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all estimates and adjustments (consisting of normal recurring accruals, unless otherwise stated herein) considered necessary for a fair presentation of the financial position of L.B. Foster Company and subsidiaries as of March 31, 2020 and December 31, 2019, its Condensed Consolidated Statements of Operations, its Condensed Consolidated Statements of Stockholders' Equity, and its Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2020 and 2019, have been included. However, actual results could differ from those estimates. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. The Condensed Consolidated Balance Sheet as of December 31, 2019 was derived from audited financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and footnotes thereto included in the L.B. Foster Company’s Annual Report on Form 10-K for the year ended December 31, 2019. In this Quarterly Report on Form 10-Q, references to “we,” “us,” “our,” and the “Company” refer collectively to L.B. Foster Company and its consolidated subsidiaries.
Recently issued accounting standards	Recently Issued Accounting Standards In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. (“ASU”) 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2020-04”), which provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The amendments are effective for all entities as of March 12, 2020 through December 31, 2022. We are currently evaluating the impacts of the provisions of ASU 2020-04 on our financial condition, results of operations, and cash flows. Recently Adopted Accounting Standards In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). The ASU added a new impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses, presenting financial assets measured at amortized cost basis at the net amount expected to be collected upon inception. The CECL model applies to trade receivables, other receivables, and most debt instruments. The CECL model does not have a minimum threshold for recognition of impairment losses, and entities must measure expected credit losses on assets that have a low risk of loss. The Company adopted the provisions of ASU 2016-13 on January 1, 2020, using the modified retrospective approach as of the beginning of the period of adoption. In accordance with the standard, the Company evaluated its allowance for credit losses for trade receivables and contract assets, the only assets held by the Company that were impacted by the scope of the standard. The adoption of ASU 2016-13 had no material effect on the Company's financial position or results of operations, and no adjustment to January 1, 2020 retained earnings was recorded; the Company has presented the disclosures required by this new standard in Note 5 Accounts Receivable and Note 6 Inventory. In August 2018, the FASB issued ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software” (“ASU 2018-15”). The ASU requires capitalization of certain implementation costs incurred in a cloud computing arrangement that qualifies as a service contract. The amendments in the ASU are effective for fiscal years beginning after December 15, 2019 and for interim periods therein with early adoption permitted. The adoption of the ASU had no impact on the Company’s consolidated financial statements and related disclosures.
Inventory	Inventories of the Company are valued at average cost or net realizable value, whichever is lower.
Share based compensation	The Company applies the provisions of ASC 718, “Compensation – Stock Compensation,” to account for the Company’s stock-based compensation. Stock-based compensation cost is measured at the grant date based on the calculated fair value of the award and is recognized over the employees’ requisite service periods

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following table illustrates the Company's revenues and profit from operations by segment for the periods indicated: Three Months Ended Three Months Ended Net Sales Segment Profit (Loss) Net Sales Segment Profit Rail Products and Services $ 70,204 $ 1,171 $ 75,694 $ 3,479 Construction Products 29,034 (1,639) 37,345 834 Tubular and Energy Services 29,537 612 37,430 4,688 Total $ 128,775 $ 144 $ 150,469 $ 9,001
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The following table provides a reconciliation of segment net profit from operations to the Company’s consolidated total: Three Months Ended 2020 2019 Profit for reportable segments $ 144 $ 9,001 Interest expense - net (817) (1,355) Other income - net 135 150 Unallocated corporate expenses and other unallocated charges (2,156) (3,468) (Loss) income before income taxes $ (2,694) $ 4,328
Reconciliation of Assets from Segment to Consolidated	The following table illustrates assets of the Company by segment: March 31, December 31, Rail Products and Services $ 170,915 $ 186,323 Construction Products 88,257 83,049 Tubular and Energy Services 81,220 77,320 Unallocated corporate assets 58,683 58,479 Total $ 399,075 $ 405,171

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table summarizes the Company's net sales by major product and service category: Three Months Ended 2020 2019 Rail Products $ 43,562 $ 46,206 Rail Technologies 26,642 29,488 Rail Products and Services 70,204 75,694 Piling and Fabricated Bridge 18,391 23,732 Precast Concrete Products 10,643 13,613 Construction Products 29,034 37,345 Test, Inspection, and Threading Services 9,704 14,724 Protective Coatings and Measurement Systems 19,833 22,706 Tubular and Energy Services 29,537 37,430 Total net sales $ 128,775 $ 150,469 Net sales by the timing of the transfer of products and services was as follows: Three Months Ended March 31, 2020 Rail Products and Construction Tubular and Energy Total Point in time $ 54,888 $ 16,883 $ 24,227 $ 95,998 Over time 15,316 12,151 5,310 32,777 Total net sales $ 70,204 $ 29,034 $ 29,537 $ 128,775 Three Months Ended March 31, 2019 Rail Products and Construction Tubular and Energy Total Point in time $ 56,492 $ 23,095 $ 29,134 $ 108,721 Over time 19,202 14,250 8,296 41,748 Total net sales $ 75,694 $ 37,345 $ 37,430 $ 150,469

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the goodwill balance by reportable segment: Rail Products and Construction Tubular and Energy Total Balance as of December 31, 2019 $ 14,418 $ 5,147 $ — $ 19,565 Foreign currency translation impact (578) — — (578) Balance as of March 31, 2020 $ 13,840 $ 5,147 $ — $ 18,987
Schedule of Intangible Assets	The components of the Company’s intangible assets were as follows: March 31, 2020 Weighted Average Gross Accumulated Net Non-compete agreements 5 $ 45 $ (39) $ 6 Patents 10 345 (176) 169 Customer relationships 18 36,863 (14,222) 22,641 Trademarks and trade names 16 7,736 (3,667) 4,069 Technology 14 35,567 (20,836) 14,731 $ 80,556 $ (38,940) $ 41,616 December 31, 2019 Weighted Average Gross Accumulated Net Non-compete agreements 4 $ 1,272 $ (1,259) $ 13 Patents 10 377 (188) 189 Customer relationships 18 37,498 (13,945) 23,553 Trademarks and trade names 16 7,787 (3,551) 4,236 Technology 13 35,728 (20,205) 15,523 $ 82,662 $ (39,148) $ 43,514
Estimated Future Amortization	As of March 31, 2020, estimated amortization expense for the remainder of 2020 and thereafter was as follows: Amortization Expense Remainder of 2020 $ 4,362 2021 5,786 2022 5,703 2023 5,231 2024 4,204 2025 and thereafter 16,330 $ 41,616

Inventory (Tables)

Inventory (Tables)	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories as of March 31, 2020 and December 31, 2019 are summarized in the following table: March 31, December 31, Finished goods $ 53,898 $ 59,864 Contract assets 32,438 37,032 Work-in-process 7,006 3,728 Raw materials 20,189 18,677 Inventories - net $ 113,531 $ 119,301

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant, and equipment as of March 31, 2020 and December 31, 2019 consisted of the following: March 31, December 31, Land $ 11,041 $ 11,076 Improvements to land and leaseholds 17,172 17,172 Buildings 34,619 35,241 Machinery and equipment, including equipment under finance leases 122,983 122,599 Construction in progress 7,692 5,234 Gross property, plant, and equipment 193,507 191,322 Less accumulated depreciation and amortization, including accumulated amortization of finance leases (110,565) (109,008) Property, plant, and equipment - net $ 82,942 $ 82,314

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Balance Sheet Locations	The balance sheet components of the Company's leases were as follows as of March 31, 2020 and December 31, 2019: March 31, December 31, Operating leases Operating lease right-of-use assets $ 18,275 $ 13,274 Other current liabilities $ 3,227 $ 3,006 Long-term operating lease liabilities 15,048 10,268 Total operating lease liabilities $ 18,275 $ 13,274 Finance leases Property, plant, and equipment $ 3,469 $ 3,518 Accumulated amortization (3,095) (2,943) Property, plant, and equipment - net $ 374 $ 575 Current maturities of long-term debt $ 231 $ 405 Long-term debt 143 170 Total finance lease liabilities $ 374 $ 575
Components of Lease Cost	The components of lease expense within the Company's statements of operations were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Finance lease cost: Amortization of finance leases $ 184 $ 178 Interest on lease liabilities 18 9 Operating lease cost 980 916 Sublease income (20) (9) Total lease cost $ 1,162 $ 1,094 The cash flow components of the Company's leases were as follows for the three months ended March 31, 2020 and 2019: Three Months Ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (1,210) $ (1,079) Financing cash flows related to finance leases (184) (181) Right-of-use assets obtained in exchange for new lease liabilities: Operating leases $ 5,981 $ 447 The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows: Three Months Ended 2020 2019 Operating lease weighted-average remaining lease term 7 6 Operating lease weighted-average discount rate 5.2 % 4.9 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.3 % 4.3 %
Estimated Annual Maturities, Operating	As of March 31, 2020, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2020 and thereafter were as follows: Operating Leases Finance Leases Remaining 2020 $ 2,877 $ 266 2021 3,012 131 2022 2,689 47 2023 2,483 17 2024 2,422 11 2025 and thereafter 7,577 — Total undiscounted lease payments 21,060 472 Interest (2,785) (98) Total $ 18,275 $ 374
Estimated Annual Maturities, Finance	As of March 31, 2020, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2020 and thereafter were as follows: Operating Leases Finance Leases Remaining 2020 $ 2,877 $ 266 2021 3,012 131 2022 2,689 47 2023 2,483 17 2024 2,422 11 2025 and thereafter 7,577 — Total undiscounted lease payments 21,060 472 Interest (2,785) (98) Total $ 18,275 $ 374

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long-term debt consisted of the following: March 31, December 31, Revolving credit facility $ 40,688 $ 33,868 Term loan 23,125 23,750 Finance leases and financing agreements 374 575 Total 64,187 58,193 Less current maturities (2,731) (2,905) Long-term portion $ 61,456 $ 55,288

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Fair Value Measurements at Reporting Date Fair Value Measurements at Reporting Date March 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Term deposits $ 16 $ 16 $ — $ — $ 17 $ 17 $ — $ — Total assets $ 16 $ 16 $ — $ — $ 17 $ 17 $ — $ — Interest rate swaps $ 1,640 $ — $ 1,640 $ — $ 480 $ — $ 480 $ — Total liabilities $ 1,640 $ — $ 1,640 $ — $ 480 $ — $ 480 $ —

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	(Share amounts in thousands) The following table sets forth the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended 2020 2019 Numerator for basic and diluted (loss) earnings per common share: Net (loss) income $ (1,866) $ 3,690 Denominator: Weighted average shares outstanding 10,478 10,384 Denominator for basic (loss) earnings per common share 10,478 10,384 Effect of dilutive securities: Stock compensation plans — 63 Dilutive potential common shares — 63 Denominator for diluted (loss) earnings per common share - adjusted weighted average shares outstanding 10,478 10,447 Basic (loss) earnings per common share $ (0.18) $ 0.36 Diluted (loss) earnings per common share $ (0.18) $ 0.35

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]
Schedule of Nonvested Share Activity	The following table summarizes the restricted stock awards, deferred stock units, and performance share units activity for the three months ended March 31, 2020: Restricted Deferred Performance Weighted Average Outstanding as of December 31, 2019 150,799 54,078 331,148 $ 18.50 Granted 66,531 — 105,857 17.87 Vested (62,782) — (163,224) 16.33 Adjustment for incentive awards not expected to vest — — (2,477) 33.61 Outstanding as of March 31, 2020 154,548 54,078 271,304 $ 18.45

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2020
Defined Benefit Plan Disclosure
Schedule of Costs of Retirement Plans	The following table summarizes the expense associated with the contributions made to these plans: Three Months Ended 2020 2019 United States $ (138) $ 550 Canada 39 38 United Kingdom 111 107 $ 12 $ 695
United States
Defined Benefit Plan Disclosure
Schedule of Net Benefit Costs	Net periodic pension costs for the United States defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended 2020 2019 Interest cost $ 56 $ 162 Expected return on plan assets (58) (180) Recognized net actuarial loss 13 31 Net periodic pension cost $ 11 $ 13
United Kingdom
Defined Benefit Plan Disclosure
Schedule of Net Benefit Costs	Net periodic pension costs for the United Kingdom defined benefit pension plan for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended 2020 2019 Interest cost $ 44 $ 54 Expected return on plan assets (59) (62) Amortization of prior service costs and transition amount 6 11 Recognized net actuarial loss 64 53 Net periodic pension cost $ 55 $ 56

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	The following table sets forth the Company’s product warranty accrual: Warranty Liability Balance as of December 31, 2019 $ 1,222 Additions to warranty liability 47 Warranty liability utilized (251) Balance as of March 31, 2020 $ 1,018
Schedule Of Future Payments Of Legal Settlements	The expected payments under the UPRR Settlement Agreement for the remainder of the year ending December 31, 2020 and thereafter are as follows: Year Ending December 31, Remainder of 2020 $ 8,000 2021 8,000 2022 8,000 2023 8,000 2024 8,000 Total $ 40,000
Environmental Loss Contingencies	The following table sets forth the Company’s environmental obligation: Environmental liability Balance as of December 31, 2019 $ 6,068 Environmental obligations utilized (16) Balance as of March 31, 2020 $ 6,052

Business Segments - Narrative (

Business Segments - Narrative (Details)	3 Months Ended
	Mar. 31, 2020segment
Segment Reporting [Abstract]
Operating segments	3

Business Segments - Reconciliat

Business Segments - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information
Total net sales	$ 128,775	$ 150,469
Segment Profit (Loss)	144	9,001
Rail Products and Services
Segment Reporting Information
Total net sales	70,204	75,694
Segment Profit (Loss)	1,171	3,479
Construction Products
Segment Reporting Information
Total net sales	29,034	37,345
Segment Profit (Loss)	(1,639)	834
Tubular and Energy Services
Segment Reporting Information
Total net sales	29,537	37,430
Segment Profit (Loss)	$ 612	$ 4,688

Business Segments - Reconcili_2

Business Segments - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting [Abstract]
Profit for reportable segments	$ 144	$ 9,001
Interest expense - net	(817)	(1,355)
Other income - net	135	150
Unallocated corporate expenses and other unallocated charges	(2,156)	(3,468)
(Loss) income before income taxes	$ (2,694)	$ 4,328

Business Segments - Reconcili_3

Business Segments - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Assets	$ 399,075	$ 405,171
Operating Segments | Rail Products and Services
Segment Reporting Information
Assets	170,915	186,323
Operating Segments | Construction Products
Segment Reporting Information
Assets	88,257	83,049
Operating Segments | Tubular and Energy Services
Segment Reporting Information
Assets	81,220	77,320
Unallocated corporate assets
Segment Reporting Information
Assets	$ 58,683	$ 58,479

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue remaining performance obligation	$ 237,691
Disaggregation of Revenue
Total net sales	128,775	$ 150,469
Contract with customer, assets	32,438		$ 37,032
Contract with customer, liability	5,840		$ 4,472
Contract assets transferred to receivables	15,600
Cash proceeds from liability contract	2,943
Revenue recognized from contract liability	$ 2,614	$ 948
Over time
Disaggregation of Revenue
Customer revenue transferred over-time	25.50%	27.70%
Total net sales	$ 32,777	$ 41,748
Over time | Performance Based
Disaggregation of Revenue
Total net sales	24,432	31,837
Over time | Delivery Based
Disaggregation of Revenue
Total net sales	$ 8,345	$ 9,911
Point in time
Disaggregation of Revenue
Customer revenue transferred over-time	74.50%	72.30%
Total net sales	$ 95,998	$ 108,721
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue remaining performance obligation	7.90%
Performance obligations expected to be satisfied, expected timing	12 months

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue
Total net sales	$ 128,775	$ 150,469
Rail Products and Services
Disaggregation of Revenue
Total net sales	70,204	75,694
Rail Products and Services | Rail Products
Disaggregation of Revenue
Total net sales	43,562	46,206
Rail Products and Services | Rail Technologies
Disaggregation of Revenue
Total net sales	26,642	29,488
Construction Products
Disaggregation of Revenue
Total net sales	29,034	37,345
Construction Products | Piling and Fabricated Bridge
Disaggregation of Revenue
Total net sales	18,391	23,732
Construction Products | Precast Concrete Products
Disaggregation of Revenue
Total net sales	10,643	13,613
Tubular and Energy Services
Disaggregation of Revenue
Total net sales	29,537	37,430
Tubular and Energy Services | Test, Inspection, and Threading Services
Disaggregation of Revenue
Total net sales	9,704	14,724
Tubular and Energy Services | Protective Coatings and Measurement Systems
Disaggregation of Revenue
Total net sales	$ 19,833	$ 22,706

Revenue - Timing of Transfer (D

Revenue - Timing of Transfer (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue
Total net sales	$ 128,775	$ 150,469
Point in time
Disaggregation of Revenue
Total net sales	95,998	108,721
Over time
Disaggregation of Revenue
Total net sales	32,777	41,748
Rail Products and Services
Disaggregation of Revenue
Total net sales	70,204	75,694
Rail Products and Services | Point in time
Disaggregation of Revenue
Total net sales	54,888	56,492
Rail Products and Services | Over time
Disaggregation of Revenue
Total net sales	15,316	19,202
Construction Products
Disaggregation of Revenue
Total net sales	29,034	37,345
Construction Products | Point in time
Disaggregation of Revenue
Total net sales	16,883	23,095
Construction Products | Over time
Disaggregation of Revenue
Total net sales	12,151	14,250
Tubular and Energy Services
Disaggregation of Revenue
Total net sales	29,537	37,430
Tubular and Energy Services | Point in time
Disaggregation of Revenue
Total net sales	24,227	29,134
Tubular and Energy Services | Over time
Disaggregation of Revenue
Total net sales	$ 5,310	$ 8,296

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Goodwill
Goodwill, beginning balance	$ 19,565
Foreign currency translation impact	(578)
Goodwill, ending balance	18,987
Rail Products and Services
Goodwill
Goodwill, beginning balance	14,418
Foreign currency translation impact	(578)
Goodwill, ending balance	13,840
Construction Products
Goodwill
Goodwill, beginning balance	5,147
Foreign currency translation impact	0
Goodwill, ending balance	5,147
Tubular and Energy Services
Goodwill
Goodwill, beginning balance	0
Foreign currency translation impact	0
Goodwill, ending balance	$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Intangible Asset (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross Carrying Value	$ 80,556	$ 82,662
Accumulated Amortization	(38,940)	(39,148)
Net Carrying Amount	41,616	43,514
Non-compete agreements
Finite-Lived Intangible Assets
Gross Carrying Value	45	1,272
Accumulated Amortization	(39)	(1,259)
Net Carrying Amount	6	13
Patents
Finite-Lived Intangible Assets
Gross Carrying Value	345	377
Accumulated Amortization	(176)	(188)
Net Carrying Amount	169	189
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Value	36,863	37,498
Accumulated Amortization	(14,222)	(13,945)
Net Carrying Amount	22,641	23,553
Trademarks and trade names
Finite-Lived Intangible Assets
Gross Carrying Value	7,736	7,787
Accumulated Amortization	(3,667)	(3,551)
Net Carrying Amount	4,069	4,236
Technology
Finite-Lived Intangible Assets
Gross Carrying Value	35,567	35,728
Accumulated Amortization	(20,836)	(20,205)
Net Carrying Amount	$ 14,731	$ 15,523
Weighted Average
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	16 years
Weighted Average | Non-compete agreements
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	5 years	4 years
Weighted Average | Patents
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	10 years	10 years
Weighted Average | Customer relationships
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	18 years	18 years
Weighted Average | Trademarks and trade names
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	16 years	16 years
Weighted Average | Technology
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	14 years	13 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Amortization expense	$ 1,463	$ 1,712
Non-compete agreements
Fully amortized intangible assets	$ 1,186
Minimum
Finite lived intangible asset, useful life	5 years
Maximum
Finite lived intangible asset, useful life	25 years
Weighted Average
Finite lived intangible asset, useful life	16 years
Weighted Average | Non-compete agreements
Finite lived intangible asset, useful life	5 years		4 years

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Expected Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2020	$ 4,362
2021	5,786
2022	5,703
2023	5,231
2024	4,204
2025 and thereafter	16,330
Net Carrying Amount	$ 41,616	$ 43,514

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Accounts Receivable Additional Disclosures [Abstract]
Allowance doubtful accounts, receivables	$ 1,255		$ 1,100
Reserve for (income) from uncollectable accounts	$ 164	$ 100

Inventory - Schedule of Invento

Inventory - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Finished goods	$ 53,898	$ 59,864
Contract assets	32,438	37,032
Work-in-process	7,006	3,728
Raw materials	20,189	18,677
Inventories - net	$ 113,531	$ 119,301

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Property, Plant and Equipment
Gross property, plant, and equipment	$ 193,507,000		$ 191,322,000
Less accumulated depreciation and amortization, including accumulated amortization of finance leases	(110,565,000)		(109,008,000)
Property, plant, and equipment - net	82,942,000		82,314,000
Depreciation	2,707,000	$ 2,772,000
Asset impairment	0	$ 0
Land
Property, Plant and Equipment
Gross property, plant, and equipment	11,041,000		11,076,000
Improvements to land and leaseholds
Property, Plant and Equipment
Gross property, plant, and equipment	17,172,000		17,172,000
Buildings
Property, Plant and Equipment
Gross property, plant, and equipment	34,619,000		35,241,000
Machinery and equipment, including equipment under finance leases
Property, Plant and Equipment
Gross property, plant, and equipment	122,983,000		122,599,000
Construction in progress
Property, Plant and Equipment
Gross property, plant, and equipment	$ 7,692,000		$ 5,234,000

Leases - Narrative (Details)

Leases - Narrative (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessee, Lease, Description
Lease renewal term	12 years
Lease termination period	1 year
Operating lease weighted-average remaining lease term	7 years	6 years
Operating lease weighted-average discount rate	5.20%	4.90%
Finance lease weighted-average remaining lease term	1 year	1 year
Finance lease weighted-average discount rate	4.30%	4.30%
Minimum
Lessee, Lease, Description
Lease term	1 year
Maximum
Lessee, Lease, Description
Lease term	12 years

Leases - Balance Sheet Location

Leases - Balance Sheet Location (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating leases
Operating lease right of use assets	$ 18,275	$ 13,274
Operating lease liability, current	3,227	3,006
Operating lease liability, noncurrent	15,048	10,268
Total operating lease liabilities	18,275	13,274
Finance leases
Property, plant, and equipment	3,469	3,518
Accumulated amortization	(3,095)	(2,943)
Property, plant, and equipment - net	374	575
Finance lease liability, current	231	405
Finance lease liability, noncurrent	143	170
Total finance lease liabilities	$ 374	$ 575

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lease, Cost [Abstract]
Amortization of finance leases	$ 184	$ 178
Interest on lease liabilities	18	9
Operating lease cost	980	916
Sublease income	(20)	(9)
Total lease cost	$ 1,162	$ 1,094

Leases - Cash Flow Components (

Leases - Cash Flow Components (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating cash flows related to operating leases	$ (1,210)	$ (1,079)
Financing cash flows related to finance leases	(184)	(181)
Right-of-use asset obtained in exchange for operating lease liability	$ 5,981	$ 447

Leases - Estimated Annual Matur

Leases - Estimated Annual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Leases
Remaining 2020	$ 2,877
2021	3,012
2022	2,689
2023	2,483
2023	2,422
2025 and thereafter	7,577
Total undiscounted lease payments	21,060
Interest	(2,785)
Total	18,275	$ 13,274
Finance Leases
Remaining 2020	266
2021	131
2022	47
2023	17
2024	11
2025 and thereafter	0
Total undiscounted lase payments	472
Interest	(98)
Total finance lease liabilities	$ 374	$ 575

Leases - Weighted Average Lease

Leases - Weighted Average Lease Term and Discount Rate (Details)	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease weighted-average remaining lease term	7 years	6 years
Operating lease weighted-average discount rate	5.20%	4.90%
Finance lease weighted-average remaining lease term	1 year	1 year
Finance lease weighted-average discount rate	4.30%	4.30%

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Line of Credit Facility
Finance leases and financing agreements	$ 374	$ 575
Total	64,187	58,193
Less current maturities	(2,731)	(2,905)
Long-term portion	61,456	55,288
Revolving credit facility
Line of Credit Facility
Line of credit facility, amount outstanding	40,688	33,868
Term loan
Line of Credit Facility
Line of credit facility, amount outstanding	$ 23,125	$ 23,750

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details)	Apr. 30, 2019USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Revolving credit facility
Line of Credit Facility
Line of credit facility, amount outstanding		$ 40,688,000	$ 33,868,000
Term loan
Line of Credit Facility
Line of credit facility, amount outstanding		23,125,000	$ 23,750,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company
Line of Credit Facility
Line of credit facility, maximum borrowing capacity	$ 195,000,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility
Line of Credit Facility
Line of credit facility, maximum borrowing capacity	140,000,000
Potential increase to borrowing capacity	$ 50,000,000
Line of credit facility, current borrowing capacity		98,753,000
Debt instrument term	5 years
Maximum growth leverage ratio	3.25
Maximum growth leverage ratio during acquisition period	3.50
Minimum consolidated fixed charge coverage ratio	1.25
Minimum working capital to revolving facility usage ratio	1.40
Liquidity covenant	$ 25,000,000
Acquisition consideration threshold, per acquisition	50,000,000
Aggregate acquisition threshold for four consecutive periods where acquisitions occurred	50,000,000
Aggregate acquisition consideration threshold	100,000,000
Line of credit facility, amount outstanding		$ 559,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Foreign Sublimit
Line of Credit Facility
Line of credit facility, maximum borrowing capacity	$ 25,000,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Euro-rate
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.00%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Euro-rate | Maximum
Line of Credit Facility
Debt instrument, basis spread on variable rate	2.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Euro-rate | Minimum
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Base Rate | Maximum
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Base Rate | Minimum
Line of Credit Facility
Debt instrument, basis spread on variable rate	0.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving credit facility | Overnight Bank Funding Rate
Line of Credit Facility
Debt instrument, basis spread on variable rate	0.50%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Term loan | Term Loan
Line of Credit Facility
Line of credit facility, current borrowing capacity	$ 25,000,000

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - Swap - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative, notional amount	$ 50,000,000
Investment expense	$ 73,000
Interest income		$ 65,000

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	$ 16	$ 17
Total assets	16	17
Interest rate swaps	1,640	480
Total liabilities	1,640	480
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	16	17
Total assets	16	17
Interest rate swaps	0	0
Total liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	0	0
Total assets	0	0
Interest rate swaps	1,640	480
Total liabilities	1,640	480
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	0	0
Total assets	0	0
Interest rate swaps	0	0
Total liabilities	$ 0	$ 0

Earning Per Common Share - Sche

Earning Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator for basic and diluted (loss) earnings per common share:
Net (loss) income	$ (1,866)	$ 3,690
Denominator:
Weighted average shares outstanding (in shares)	10,478,000	10,384,000
Denominator for basic earnings per common share (in shares)	10,478,000	10,384,000
Effect of dilutive securities:
Other stock compensation plans (in shares)	0	63,000
Dilutive potential common shares (in shares)	0	63,000
Denominator for diluted earnings (loss) per common share - adjusted weighted average shares outstanding (in shares)	10,478,000	10,447,000
Basic earnings per common share (usd per share)	$ (0.18)	$ 0.36
Diluted earnings per common share (usd per share)	$ (0.18)	$ 0.35
Anti-dilutive shares (in shares)	190,000	0

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	May 29, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation		$ 680	$ 855
Expected cost on shares expected to vest		$ 5,893		$ 5,893
Recognition period for compensation expense not yet recognized		4 years
Restricted Stock | Vesting Period 2
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period		3 years
Restricted Stock | Vesting Period 2 | Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period				1 year
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	3 years

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and Performance Share Units (Details)	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted average share price, beginning balance (usd per share) | $ / shares	$ 18.50
Weighted average shares granted (usd per share) | $ / shares	17.87
Weighted average shares vested (usd per share) | $ / shares	16.33
Weighted average shares adjustment for incentive awards expected to vest (usd per share) | $ / shares	33.61
Weighted average share price, ending balance (usd per share) | $ / shares	$ 18.45
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Nonvested Shares, Outstanding, Beginning Balance (in shares)	150,799
Granted (in shares)	66,531
Vested (in shares)	(62,782)
Adjustment for incentive awards expected to vest (in shares)	0
Nonvested Shares, Outstanding, Ending Balance (in shares)	154,548
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Nonvested Shares, Outstanding, Beginning Balance (in shares)	54,078
Granted (in shares)	0
Vested (in shares)	0
Adjustment for incentive awards expected to vest (in shares)	0
Nonvested Shares, Outstanding, Ending Balance (in shares)	54,078
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Nonvested Shares, Outstanding, Beginning Balance (in shares)	331,148
Granted (in shares)	105,857
Vested (in shares)	(163,224)
Adjustment for incentive awards expected to vest (in shares)	(2,477)
Nonvested Shares, Outstanding, Ending Balance (in shares)	271,304

Retirement Plans - Narrative (D

Retirement Plans - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)plan
Defined Benefit Plan Disclosure
Defined contribution plan number	6
United States
Defined Benefit Plan Disclosure
Number of retirement plans	3
Number of defined benefit plans	1
Defined contribution plan number	2
Defined benefit plan, expected future employer contributions, remainder of fiscal year | $	$ 660
Canada
Defined Benefit Plan Disclosure
Defined contribution plan number	2
Number of post-retirement benefit plan	1
United Kingdom
Defined Benefit Plan Disclosure
Defined contribution plan number	2
Defined benefit plans, estimated future employer contributions in current fiscal year | $	$ 297
Defined benefit plan, contributions by employer | $	$ 77

Retirement Plans - Schedule Of

Retirement Plans - Schedule Of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
United States
Defined Benefit Plan Disclosure
Interest cost	$ 56	$ 162
Expected return on plan assets	(58)	(180)
Recognized net actuarial loss	13	31
Net periodic pension cost	11	13
United Kingdom
Defined Benefit Plan Disclosure
Interest cost	44	54
Expected return on plan assets	(59)	(62)
Amortization of prior service costs and transition amount	6	11
Recognized net actuarial loss	64	53
Net periodic pension cost	$ 55	$ 56

Retirement Plans - Schedule o_2

Retirement Plans - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Contribution Plan Disclosure
Expenses associated with contributions made	$ 12	$ 695
United States
Defined Contribution Plan Disclosure
Expenses associated with contributions made	(138)	550
Canada
Defined Contribution Plan Disclosure
Expenses associated with contributions made	39	38
United Kingdom
Defined Contribution Plan Disclosure
Expenses associated with contributions made	$ 111	$ 107

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Narrative (Details) $ in Thousands	Mar. 13, 2019USD ($)	Mar. 31, 2020USD ($)company	Dec. 31, 2019USD ($)	Jun. 05, 2017company
Product Liability Contingency
Litigation settlement amount		$ 40,000
Number of companies that received a general notice letter (company) | company				140
Present value of remedial work		1,100,000
Undiscovered remedial work		$ 1,700,000
Anticipated clean period		13 years
Number of potentially responsible parties included in agreement | company		100
Accrual for environmental loss		$ 6,052	$ 6,068
Uprr
Product Liability Contingency
Annual commitment amount		8,000
Uprr
Product Liability Contingency
Litigation settlement amount	$ 50,000
Litigation settlement amount, current		2,000
Litigation settlement amount, non-current		$ 48,000
Payment period		6 years

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Schedule of Product Warranty Liability (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Movement in Standard Product Warranty Accrual
Beginning balance	$ 1,222
Additions to warranty liability	47
Warranty liability utilized	(251)
Ending balance	$ 1,018

Commitments and Contingent Li_5

Commitments and Contingent Liabilities - Future Payments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2020	$ 8,000
2021	8,000
2022	8,000
2023	8,000
2024	8,000
Total	$ 40,000

Commitments and Contingent Li_6

Commitments and Contingent Liabilities - Environmental Loss Contingencies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Accrual for Environmental Loss Contingencies
Environmental liability, beginning balance	$ 6,068
Environmental obligations utilized	(16)
Environmental liability, ending balance	$ 6,052

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (828)	$ 638
Pre-tax income	$ (2,694)	$ 4,328
Effective income tax rate (percent)	30.70%	14.70%

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event $ in Thousands	Apr. 30, 2020USD ($)company
Facility Closing
Subsequent Event
Number of locations closed | company	3
Minimum
Subsequent Event
Business exit costs	$ 5,500
Business exit costs, cash charges	1,500
Business exit costs, noncash charges	4,000
Maximum
Subsequent Event
Business exit costs	7,000
Business exit costs, cash charges	2,500
Business exit costs, noncash charges	$ 4,500