L.B. Foster (FSTR) 10-Q 10 May 22 2022 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2022	May 03, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Commission File Number	000-10436
Entity Registrant Name	L.B. Foster Company
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(s)	FSTR
Name of each exchange on which registered	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		10,889,632
Amendment Flag	false
Document Fiscal Year Focus	2022
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, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 6,239	$ 10,372
Accounts receivable - net	59,135	55,911
Contract assets - net	34,268	36,179
Inventories - net	67,799	62,871
Other current assets	19,623	14,146
Total current assets	187,064	179,479
Property, plant, and equipment - net	57,579	58,222
Operating lease right-of-use assets - net	14,374	15,131
Other assets:
Goodwill	19,904	20,152
Other intangibles - net	29,487	31,023
Deferred Income Tax Assets, Net	37,721	37,242
Other assets	1,283	1,346
TOTAL ASSETS	347,412	342,595
Current liabilities:
Accounts payable	45,483	41,411
Deferred revenue	19,310	13,411
Accrued payroll and employee benefits	5,330	9,517
Accrued Legal Settlement Current	8,000	8,000
Long-term Debt and Lease Obligation, Current	80	98
Other accrued liabilities	11,593	13,757
Total current liabilities	89,796	86,194
Long-term Debt and Lease Obligation	35,531	31,153
Deferred Income Tax Liabilities, Net	3,659	3,753
Accrued Legal Settlement Non Current	16,000	16,000
Operating Lease, Liability, Noncurrent	11,558	12,279
Other long-term liabilities	9,171	9,606
Stockholders’ equity:
Common stock, par value $0.01, authorized 20,000,000 shares; shares issued at March 31, 2022 and December 31, 2021, 11,115,779; shares outstanding at March 31, 2022 and December 31, 2021, 10,704,783 and 10,670,343, respectively	111	111
Paid-in capital	42,153	43,272
Retained earnings	167,167	168,733
Treasury stock - at cost, 410,996 and 445,436 common stock shares at March 31, 2022 and December 31, 2021, respectively	(9,200)	(10,179)
Accumulated other comprehensive loss	(19,117)	(18,845)
Total L.B. Foster Company stockholders’ equity	181,114	183,092
Noncontrolling interest	583	518
Total stockholders’ equity	181,697	183,610
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 347,412	$ 342,595

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
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)	10,704,783	10,670,343
Treasury stock shares - at cost, common stock (in shares)	410,996	445,436

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total net sales	$ 98,794	$ 116,080
Total cost of sales	82,347	97,250
Gross profit	16,447	18,830
Selling and administrative expenses	17,298	18,026
Amortization expense	1,436	1,465
Operating loss	(2,287)	(661)
Interest expense - net	370	871
Other (income) expense - net	(563)	59
Loss before income taxes	(2,094)	(1,591)
Income tax benefit	(508)	(321)
Net loss	(1,586)	(1,270)
Net loss attributable to noncontrolling interest	(20)	(12)
Net loss attributable to L.B. Foster Company	$ (1,566)	$ (1,258)
Basic income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Diluted income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Sales of goods
Total net sales	$ 84,421	$ 100,546
Total cost of sales	69,845	84,125
Sales of services
Total net sales	14,373	15,534
Total cost of sales	$ 12,502	$ 13,125

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss		$ (1,586)	$ (1,270)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment		(880)	453
Unrealized gain on cash flow hedges, net of tax expense of $188 and $0, respectively		551	0
Cash flow hedges reclassified to earnings, net of tax expense of $66 and $98, respectively		93	136
Reclassification of pension liability adjustments to earnings, net of tax expense of $16 and $24, respectively*	[1]	49	91
Total comprehensive loss		(1,773)	(590)
Less comprehensive income (loss) attributable to noncontrolling interest:
Net loss attributable to noncontrolling interest		(20)	(12)
Foreign currency translation adjustment		85	(30)
Amounts attributable to noncontrolling interest		65	(42)
Comprehensive loss attributable to L.B. Foster Company		$ (1,838)	$ (548)
[1]	Reclassifications out of “Accumulated other comprehensive loss” for pension obligations are charged to “Selling and administrative expenses” within the Condensed Consolidated Statements of Operations.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Unrealized loss on cash flow hedge, tax	$ 188	$ 0
Cash flow hedges reclassified to earnings, tax	66	98
Reclassification of pension liability adjustments to earnings, tax	$ 16	$ 24

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,586)	$ (1,270)
Adjustments to reconcile net loss to cash (used in) provided byoperating activities:
Deferred income taxes	(574)	(712)
Depreciation	1,938	1,990
Amortization	1,436	1,465
Equity in income of nonconsolidated investments	(87)	0
Loss on sales and disposals of property, plant, and equipment	23	10
Stock-based compensation	258	827
Change in operating assets and liabilities:
Accounts receivable	(4,556)	(7,213)
Contract assets	1,116	52
Inventories	(4,781)	(481)
Other current assets	(4,648)	(592)
Other noncurrent assets	818	451
Accounts payable	4,680	11,435
Deferred revenue	5,907	8,152
Accrued payroll and employee benefits	(4,181)	(3,495)
Other current liabilities	(2,377)	(2,384)
Other long-term liabilities	(1,022)	(621)
Net cash (used in) provided by continuing operating activities	(7,636)	7,614
Net cash used in discontinued operating activities	0	(184)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	30	0
Capital expenditures on property, plant, and equipment	(1,764)	(1,327)
Proceeds from asset divestiture	1,195	0
Net cash used in continuing investing activities	(539)	(1,327)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(30,892)	(43,321)
Proceeds from debt	35,301	35,026
Treasury stock acquisitions	(397)	(547)
Investment of noncontrolling interest	0	396
Net cash provided by (used in) continuing financing activities	4,012	(8,446)
Effect of exchange rate changes on cash and cash equivalents	30	(206)
Net decrease in cash and cash equivalents	(4,133)	(2,549)
Cash and cash equivalents at beginning of period	10,372	7,564
Cash and cash equivalents at end of period	6,239	5,015
Supplemental disclosure of cash flow information:
Interest paid	369	653
Income taxes (received) paid	$ (44)	$ 46

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	Noncontrolling Interest
Beginning balance at Dec. 31, 2020	$ 176,830	$ 111	$ 44,583	$ 165,107	$ (12,703)	$ (20,268)	$ 0
Increase (Decrease) in Stockholders' Equity
Net loss	(1,270)			(1,258)			(12)
Other comprehensive loss, net of tax:
Pension liability adjustment	91					91
Foreign currency translation adjustment	423					453	(30)
Unrealized derivative gain on cash flow hedges	0
Cash flow hedges reclassified to earnings	136					136
Issuance of common shares, net of share withheld for taxes	(547)		(1,467)		920
Stock-based compensation	827		827
Investment of noncontrolling interest	396						396
Ending balance at Mar. 31, 2021	176,886	111	43,943	163,849	(11,783)	(19,588)	354
Beginning balance at Dec. 31, 2021	183,610	111	43,272	168,733	(10,179)	(18,845)	518
Increase (Decrease) in Stockholders' Equity
Net loss	(1,586)			(1,566)			(20)
Other comprehensive loss, net of tax:
Pension liability adjustment	49					49
Foreign currency translation adjustment	(880)					(965)	85
Unrealized derivative gain on cash flow hedges	551					551
Cash flow hedges reclassified to earnings	93					93
Issuance of common shares, net of share withheld for taxes	(398)		(1,377)		979
Stock-based compensation	258		258
Ending balance at Mar. 31, 2022	$ 181,697	$ 111	$ 42,153	$ 167,167	$ (9,200)	$ (19,117)	$ 583

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Common shares issues net of shares withheld (in shares)	34,440	76,030

Financial Statements

Financial Statements	3 Months Ended
	Mar. 31, 2022
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 8 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, 2022 and December 31, 2021 and its Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Comprehensive Loss, Condensed Consolidated Statements of Cash Flows, and Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March 31, 2022 and 2021 have been included. However, actual results could differ from those estimates and changes in those estimates are recorded when known. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. The Condensed Consolidated Balance Sheet as of December 31, 2021 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 L.B. Foster Company’s Annual Report on Form 10-K for the year ended December 31, 2021. 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. Reclassifications Certain accounts in the prior year consolidated financial statements have been reclassified for comparative purposes principally to conform to the presentation of the current year period. Effective for the quarter and year ended December 31, 2021, the Company implemented operational changes in how its Chief Operating Decision Maker (“CODM”) manages its businesses, including resource allocation and operating decisions. As a result of these changes, the Company now has three reporting segments, representing the individual businesses that are run separately under the new structure: Rail, Technologies, and Services; Precast Concrete Products; and Steel Products and Measurement. The Company has revised the information for all periods presented in this Quarterly Report on Form 10-Q to reflect these reclassifications. Recently Issued Accounting Standards In March 2020 and as clarified in January 2021, 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 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. The Company is currently evaluating the impacts of the provisions of ASU 2020-04 on its financial condition, results of operations, and cash flows.

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Business Segments	Business Segments The Company is a global solutions provider of engineered, manufactured products and services that builds and supports infrastructure. The Company’s innovative engineering and product development solutions address the safety, reliability, and performance needs of its customers’ most challenging requirements. The Company maintains locations in North America, South America, Europe, and Asia. The Company’s 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 CODM, who uses such information to make 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 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, 2021. The following table illustrates the Company’s revenues and profit (loss) from operations by segment for the periods indicated: Three Months Ended Three Months Ended Net Sales Segment Operating Profit (Loss) Net Sales Segment Operating Profit (Loss) Rail, Technologies, and Services $ 63,710 $ 1,039 $ 66,232 $ 2,225 Precast Concrete Products 15,010 (791) 12,678 (112) Steel Products and Measurement 20,074 (2,148) 37,170 (928) Total $ 98,794 $ (1,900) $ 116,080 $ 1,185 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 (loss) profit to the Company’s consolidated total for the periods presented: Three Months Ended 2022 2021 Operating (loss) profit for reportable segments $ (1,900) $ 1,185 Interest expense - net (370) (871) Other income (expense) - net 563 (59) Unallocated corporate expenses and other unallocated charges (387) (1,846) Loss before income taxes $ (2,094) $ (1,591) The following table illustrates assets of the Company by segment for the periods presented: March 31, December 31, Rail, Technologies, and Services $ 161,121 $ 171,608 Precast Concrete Products 52,371 48,740 Steel Products and Measurement 60,050 58,377 Unallocated corporate assets 73,870 63,870 Total $ 347,412 $ 342,595

Revenue

Revenue	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Revenue from products or services provided to customers over time accounted for 30.7% and 25.3% of revenue for the three months ended March 31, 2022 and 2021, respectively. The majority of revenue under these long-term agreements is 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 its performance to date under the terms of the contract. Revenue recognized over time using an input measure was $19,322 and $21,108 for the three months ended March 31, 2022 and 2021, 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 $10,981 and $8,264 for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022 and December 31, 2021, the Company had contract assets of $34,268 and $36,179, respectively, that were recorded within the Condensed Consolidated Balance Sheets. As of March 31, 2022 and December 31, 2021, the Company had contract liabilities of $3,682 and $3,235, 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 69.3% and 74.7% of revenue for the three months ended March 31, 2022 and 2021. 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 for the periods presented: Three Months Ended 2022 2021 Rail Products and Global Friction Management $ 51,651 $ 55,309 Technology Services and Solutions 12,059 10,923 Rail, Technologies, and Services 63,710 66,232 Precast Concrete Buildings 9,970 10,283 Other Precast Concrete Products 5,040 2,395 Precast Concrete Products 15,010 12,678 Fabricated Steel Products 12,604 27,721 Coatings and Measurement 7,470 9,449 Steel Products and Measurement 20,074 37,170 Total net sales $ 98,794 $ 116,080 Net sales by the timing of the transfer of products and performance of services was as follows for the periods presented: Three Months Ended March 31, 2022 Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Point in time $ 49,166 $ 4,263 $ 15,062 $ 68,491 Over time 14,544 10,747 5,012 30,303 Total net sales $ 63,710 $ 15,010 $ 20,074 $ 98,794 Three Months Ended March 31, 2021 Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Point in time $ 52,044 $ 4,736 $ 29,928 $ 86,708 Over time 14,188 7,942 7,242 29,372 Total net sales $ 66,232 $ 12,678 $ 37,170 $ 116,080 The timing of revenue recognition, billings, and cash collections results in billed receivables, costs in excess of billings (included in “Contract assets”), and billings in excess of costs (contract liabilities, included in “Deferred revenue”) within the Condensed Consolidated Balance Sheets. Significant changes in contract assets during the three months ended March 31, 2022 included transfers of $11,607 from the contract assets balance as of December 31, 2021 to accounts receivable. Significant changes in contract liabilities during the three months ended March 31, 2022 resulted from increases of $1,957 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, 2022 and 2021 of $1,441 and $676, respectively, which were included in contract liabilities at the beginning of each period. The Company records provisions related to the allowance for credit losses associated with contract assets. Provisions are recorded based upon a specific review of individual contracts as necessary, and a standard provision over any remaining contract assets pooled together based on similar risk of credit loss. The development of these provisions are based on historic collection trends, accuracy of estimates within contract margin reporting, as well as the expectation that collection patterns, margin reporting, and bad debt expense will continue to adhere to patterns observed in recent years. These expectations are formed based on trends observed as well as current and expected future conditions. As of March 31, 2022, the Company had approximately $244,618 of obligations under new contracts and remaining performance obligations, which is also referred to as backlog. Approximately 10.8% of the March 31, 2022 backlog was related to projects that are anticipated to extend beyond March 31, 2023.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table presents the changes in goodwill balance by reportable segment for the period presented: Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Balance as of December 31, 2021 $ 14,577 $ 2,564 $ 3,011 $ 20,152 Foreign currency translation impact (248) — — (248) Balance as of March 31, 2022 $ 14,329 $ 2,564 $ 3,011 $ 19,904 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, which included the impacts of COVID-19. However, the future impacts of COVID-19 are unpredictable and are subject to change. No interim goodwill impairment test was required as a result of the evaluation of qualitative factors as of March 31, 2022. The components of the Company’s intangible assets were as follows for the periods presented: March 31, 2022 Weighted Average Gross Accumulated Net Patents 10 $ 385 $ (230) $ 155 Customer relationships 18 35,900 (18,626) 17,274 Trademarks and trade names 16 7,780 (4,830) 2,950 Technology 13 35,712 (26,604) 9,108 $ 79,777 $ (50,290) $ 29,487 December 31, 2021 Weighted Average Gross Accumulated Net Patents 10 $ 385 $ (218) $ 167 Customer relationships 18 36,163 (18,222) 17,941 Trademarks and trade names 16 7,801 (4,702) 3,099 Technology 13 35,772 (25,956) 9,816 $ 80,121 $ (49,098) $ 31,023 The Company amortizes intangible assets 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, 2022. Amortization expense was $1,436 and $1,465 for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, estimated amortization expense for the remainder of 2022 and thereafter was as follows: Amortization Expense Remainder of 2022 $ 4,280 2023 5,251 2024 4,247 2025 2,479 2026 2,056 2027 and thereafter 11,174 $ 29,487

Accounts Receivable

Accounts Receivable	3 Months Ended
	Mar. 31, 2022
Accounts Receivable Additional Disclosures [Abstract]
Accounts Receivable	Accounts ReceivableThe Company extends credit 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, 2022 and December 31, 2021 have been reduced by an allowance for credit losses of $423 and $547, respectively. Changes in reserves for uncollectible accounts, which are recorded as part of “Selling and administrative expenses” within the Condensed Consolidated Statements of Operations, resulted in expense of $61 and income of $22 for the three months ended March 31, 2022 and 2021, respectively. 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 considers current and expected future market and other conditions. Trade receivables are pooled within the calculation based on a range of ages, 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, including the impacts of the COVID-19 pandemic. Management maintains stringent credit review practices and works to maintain positive customer relationships to further mitigate credit risk. The following table sets forth the Company’s allowance for credit losses: Allowance for Credit Losses Balance as of December 31, 2021 $ 547 Current period provision 61 Write-off against allowance (185) Balance as of March 31, 2022 $ 423

Inventory

Inventory	3 Months Ended
	Mar. 31, 2022
Inventory Disclosure [Abstract]
Inventory	Inventory Inventories as of March 31, 2022 and December 31, 2021 are summarized in the following table: March 31, December 31, Finished goods $ 29,871 $ 23,822 Work-in-process 8,579 10,738 Raw materials 29,349 28,311 Inventories - net $ 67,799 $ 62,871 Inventories of the Company are valued at average cost or net realizable value, whichever is lower.

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant, and equipment as of March 31, 2022 and December 31, 2021 consisted of the following: March 31, December 31, Land $ 6,215 $ 6,224 Improvements to land and leaseholds 15,412 15,416 Buildings 27,080 27,206 Machinery and equipment, including equipment under finance leases 112,315 112,021 Construction in progress 1,707 1,194 Gross property, plant, and equipment 162,729 162,061 Less accumulated depreciation and amortization, including accumulated amortization of finance leases (105,150) (103,839) Property, plant, and equipment - net $ 57,579 $ 58,222 Depreciation expense was $1,938 and $1,990 for the three months ended March 31, 2022 and 2021, respectively. The Company reviews its property, plant, and equipment for recoverability whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. The Company recognizes an impairment loss if it believes that 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, 2022 and 2021.

Leases

Leases	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Leases	Leases The Company determines if an arrangement is a lease at its inception. Operating leases are included in “Operating lease right-of-use assets - net,” “Other accrued liabilities,” and “Long-term operating lease liabilities” within the Condensed Consolidated Balance Sheets. Finance leases are included within “Property, plant, and equipment - net,” “Current maturities of long-term debt,” and “Long-term debt” within the 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, 2022, the Company’s leases had remaining lease terms of 2 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, 2022 and December 31, 2021: March 31, December 31, Operating leases Operating lease right-of-use assets $ 14,374 $ 15,131 Other accrued liabilities $ 2,816 $ 2,852 Long-term operating lease liabilities 11,558 12,279 Total operating lease liabilities $ 14,374 $ 15,131 Finance leases Property, plant, and equipment $ 1,162 $ 1,162 Accumulated amortization (1,047) (1,011) Property, plant, and equipment - net $ 115 $ 151 Current maturities of long-term debt $ 80 $ 98 Long-term debt 35 53 Total finance lease liabilities $ 115 $ 151 The components of lease expense within the Company’s Condensed Consolidated Statements of Operations were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Finance lease cost: Amortization of finance leases $ 38 $ 51 Interest on lease liabilities 8 22 Operating lease cost 757 642 Sublease income (50) (50) Total lease cost $ 753 $ 665 The cash flow components of the Company’s leases were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (889) $ (792) Financing cash flows related to finance leases (41) (55) The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows as of the dates presented: March 31, 2022 2021 Operating lease weighted-average remaining lease term 6 7 Operating lease weighted-average discount rate 5.2 % 5.2 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.1 % 4.2 % As of March 31, 2022, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2022 and thereafter were as follows: Operating Leases Finance Leases Remainder of 2022 $ 2,607 $ 78 2023 3,288 42 2024 2,945 11 2025 2,375 — 2026 2,170 — 2027 and thereafter 3,165 — Total undiscounted lease payments 16,550 131 Interest (2,176) (16) Total $ 14,374 $ 115
Leases	Leases The Company determines if an arrangement is a lease at its inception. Operating leases are included in “Operating lease right-of-use assets - net,” “Other accrued liabilities,” and “Long-term operating lease liabilities” within the Condensed Consolidated Balance Sheets. Finance leases are included within “Property, plant, and equipment - net,” “Current maturities of long-term debt,” and “Long-term debt” within the 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, 2022, the Company’s leases had remaining lease terms of 2 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, 2022 and December 31, 2021: March 31, December 31, Operating leases Operating lease right-of-use assets $ 14,374 $ 15,131 Other accrued liabilities $ 2,816 $ 2,852 Long-term operating lease liabilities 11,558 12,279 Total operating lease liabilities $ 14,374 $ 15,131 Finance leases Property, plant, and equipment $ 1,162 $ 1,162 Accumulated amortization (1,047) (1,011) Property, plant, and equipment - net $ 115 $ 151 Current maturities of long-term debt $ 80 $ 98 Long-term debt 35 53 Total finance lease liabilities $ 115 $ 151 The components of lease expense within the Company’s Condensed Consolidated Statements of Operations were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Finance lease cost: Amortization of finance leases $ 38 $ 51 Interest on lease liabilities 8 22 Operating lease cost 757 642 Sublease income (50) (50) Total lease cost $ 753 $ 665 The cash flow components of the Company’s leases were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (889) $ (792) Financing cash flows related to finance leases (41) (55) The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows as of the dates presented: March 31, 2022 2021 Operating lease weighted-average remaining lease term 6 7 Operating lease weighted-average discount rate 5.2 % 5.2 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.1 % 4.2 % As of March 31, 2022, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2022 and thereafter were as follows: Operating Leases Finance Leases Remainder of 2022 $ 2,607 $ 78 2023 3,288 42 2024 2,945 11 2025 2,375 — 2026 2,170 — 2027 and thereafter 3,165 — Total undiscounted lease payments 16,550 131 Interest (2,176) (16) Total $ 14,374 $ 115

Long-term Debt and Related Matt

Long-term Debt and Related Matters	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-term Debt and Related Matters	Long-term Debt and Related Matters Long-term debt consisted of the following: March 31, December 31, Revolving credit facility $ 35,496 $ 31,100 Finance leases and financing agreements 115 151 Total 35,611 31,251 Less current maturities (80) (98) Long-term portion $ 35,531 $ 31,153 On August 13, 2021, the Company, its domestic subsidiaries, and certain of its Canadian and United Kingdom subsidiaries (collectively, the “Borrowers”), entered into the Fourth Amended and Restated Credit Agreement (the “Credit Agreement”) with PNC Bank, N.A., Citizens Bank, N.A., Wells Fargo Bank, National Association, Bank of America, N.A., and BMO Harris Bank, National Association. The Credit Agreement modifies the prior revolving credit facility, as amended, on more favorable terms and extends the maturity date from April 30, 2024 to August 13, 2026. The Credit Agreement provides for a five-year, revolving credit facility that permits aggregate borrowings of the Borrowers up to $130,000 (a $15,000 increase over the previous commitment) with a sublimit of the equivalent of $25,000 U.S. dollars that is available to the Canadian and United Kingdom borrowers in the aggregate. The Credit Agreement’s incremental loan feature permits the Company to increase the available commitments under the facility by up to an additional $50,000 subject to the Company’s receipt of increased commitments from existing or new lenders and the satisfaction of certain conditions. The obligation of the Company and its domestic, Canadian, and United Kingdom subsidiaries (the “Guarantors”) under the Credit Agreement will be secured by the grant of a security interest by the Borrowers and Guarantors in substantially all of the assets 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 subsidiaries, will be pledged to the lenders as collateral for the lending obligations. Borrowings under the Credit Agreement will bear interest at rates based upon either the base rate or LIBOR 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 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 LIBOR rate plus 100 basis points so long as the Daily LIBOR Rate is offered, ascertainable, and not unlawful (each as defined in the Credit Agreement). The base rate and LIBOR rate spreads range from 25 to 125 basis points and 125 to 225 basis points, respectively. The Credit Agreement includes two 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, and (ii) 3.50 to 1.00 for all testing periods occurring during an Acquisition Period (as defined in the Credit Agreement), and (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 Credit Agreement), which must be more than 1.05 to 1.00. The 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 Credit Agreement) has occurred prior to or after giving effect to the dividend, distribution, or redemption. Additionally, the 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 $15,000 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, so long as the Gross Leverage Ratio (as defined in the Credit Agreement) is less than or equal to 2.75 after giving effect to such acquisition; or (ii) $75,000 per acquisition, so long as the Gross Leverage Ratio is less than or equal to 1.75 after giving effect to such acquisition. 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, 2022, the Company was in compliance with the covenants in the Credit Agreement, as amended. As of March 31, 2022, the Company had outstanding letters of credit of approximately $636 and had net available borrowing capacity of $93,868, subject to covenant restrictions. The maturity date of the facility is August 13, 2026.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2022
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 loss per common share for the periods indicated: Three Months Ended 2022 2021 Numerator for basic and diluted loss per common share: Net loss $ (1,586) $ (1,270) Denominator: Weighted average shares outstanding 10,685 10,583 Denominator for basic loss per common share 10,685 10,583 Effect of dilutive securities: Dilutive potential common shares — — Denominator for diluted income (loss) per common share - adjusted weighted average shares outstanding 10,685 10,583 Basic loss per common share $ (0.15) $ (0.12) Diluted loss per common share $ (0.15) $ (0.12) There were 122 and 140 anti-dilutive shares for the three months ended March 31, 2022 and 2021, respectively.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFor the three months ended March 31, 2022 and 2021, the Company recorded an income tax benefit of $508 on pretax losses of $2,094 and an income tax benefit of $321 on pre-tax losses of $1,591, respectively, for effective income tax rates of 24.3% and 20.2%, respectively. The Company’s effective tax rate for the three months ended March 31, 2022 differs from the federal statutory rate of 21% primarily due to state income taxes, nondeductible expenses, and research tax credits.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]
Stock-Based Compensation	Stock-Based CompensationThe Company applies the provisions of the FASB’s Accounting Standards Codification (“ASC”) Topic 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-based compensation expense related to restricted stock awards and performance share units of $258 and $827 for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, unrecognized compensation expense for unvested awards approximated $4,064. The Company expects to recognize this expense over the upcoming 3.9 years through March 2026. 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, Performance Share Units, and Performance-Based Stock Awards 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-year period, unless indicated otherwise by the underlying restricted stock award agreement. Since May 2018, awards of restricted stock have been subject to a minimum one-year vesting period, including those granted to non-employee directors. Performance share units are offered annually under separate three-year long-term incentive programs. Performance share units are subject to forfeiture and will be converted into common stock of the Company based upon the Company’s performance relative to performance measures and conversion multiples, as defined in the underlying program. If the Company’s estimate of the number of performance share units expected to vest changes in a subsequent accounting period, cumulative compensation expense could increase or decrease. The change will be recognized in the current period for the vested shares and would change future expense over the remaining vesting period. 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, no non-employee directors have elected the option to receive deferred stock units of the Company’s common stock in lieu of director cash compensation. In February 2022, the Compensation Committee approved the 2022 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, 2022: Restricted Deferred Performance Weighted Average Outstanding as of December 31, 2021 135,704 74,950 116,571 $ 19.75 Granted 85,472 — 110,600 15.29 Vested (47,691) — (13,095) 18.05 Adjustment for incentive awards expected to vest — — (66,757) 17.02 Cancelled and forfeited (500) — — 18.57 Outstanding as of March 31, 2022 172,985 74,950 147,319 $ 18.17

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
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 in “Cash and cash equivalents” within the Condensed Consolidated Balance Sheets 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 a forward starting LIBOR-based interest rate swaps with notional values totaling $50,000 and $20,000 effective February 2017 and March 2022, respectively. The fair value of the interest rate swaps are 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, 2022 and December 31, 2021, the interest rate swaps were recorded in "Other current assets" when the interest rate swaps’ fair market value are in an asset position, and "Other accrued liabilities" when in a liability position within our Consolidated Balance Sheets. 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 $ 18 $ 18 $ — $ — $ 18 $ 18 $ — $ — Interest rate swaps 914 — 914 — 175 — 175 — Total assets $ 932 $ 18 $ 914 $ — $ 193 $ 18 $ 175 $ — Interest rate swaps $ — $ — $ — $ — $ 159 $ — $ 159 $ — Total liabilities $ — $ — $ — $ — $ 159 $ — $ 159 $ — The $20,000 interest rate swaps that become effective March 2022 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. The Company accounted for the $50,000 of interest rate swaps that became effective February 2017 as cash flow hedges, these interest rate swaps expired February 2022. For the three months ended March 31, 2022 and 2021, the Company recognized interest expense of $97 and $235, respectively, from interest rate swaps. In accordance with the provisions of ASC Topic 820, “Fair Value Measurement,” the Company measures certain nonfinancial assets and liabilities at fair value, which are recognized and disclosed on a nonrecurring basis.

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2022
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, as amended (“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, 2022 and 2021 were as follows: Three Months Ended 2022 2021 Interest cost $ 49 $ 43 Expected return on plan assets (66) (62) Recognized net actuarial loss 18 25 Net periodic pension cost $ 1 $ 6 The Company has made contributions to its United States defined benefit pension plan of $115 during the three months ended March 31, 2022 and expects to make total contributions of $460 during 2022. United Kingdom Defined Benefit Plan Net periodic pension costs for the United Kingdom defined benefit pension plan for the three months ended March 31, 2022 and 2021 were as follows: Three Months Ended 2022 2021 Interest cost $ 45 $ 28 Expected return on plan assets (81) (65) Amortization of prior service costs and transition amount 6 7 Recognized net actuarial loss 42 83 Net periodic pension cost $ 12 $ 53 United Kingdom regulations require trustees to adopt a prudent approach to funding required contributions to defined benefit pension plans. For the three months ended March 31, 2022, the Company contributed approximately $82 to the plan. The Company anticipates total contributions of approximately $315 to the United Kingdom pension plan during 2022. Defined Contribution Plans The Company sponsors six defined contribution plans for hourly and salaried employees across its domestic and international facilities. The following table summarizes the expense associated with the contributions made to these plans for the periods presented: Three Months Ended 2022 2021 United States $ 305 $ 364 Canada 61 46 United Kingdom 135 119 $ 501 $ 529

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2022
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, 2021 $ 1,042 Additions to warranty liability 16 Warranty liability utilized (299) Balance as of March 31, 2022 $ 759 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-year period commencing on the effective date of the Settlement Agreement through December 2024 pursuant to a Promissory Note. Additionally, commencing in January 2019 and through December 2024, UPRR agreed to purchase and has been purchasing from the Company and its subsidiaries and affiliates, a cumulative total amount of $48,000 of products and services, targeting $8,000 of annual purchases per year beginning March 13, 2019 per letters of intent under the Settlement Agreement. During the third quarter of 2021, in connection with the Company’s divestiture of its Piling Products division, the targeted annual purchases per year have been reduced to $6,000 for 2021 through 2024. The Settlement Agreement also includes a mutual release of all claims and liability regarding or relating to all CXT pre-stressed concrete railroad ties with no admission of liability and dismissal of the litigation with prejudice. The expected payments under the UPRR Settlement Agreement for the remainder of the year ending December 31, 2022 and thereafter are as follows: Year Ending December 31, Remainder of 2022 $ 8,000 2023 8,000 2024 8,000 Total $ 24,000 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. These costs may increase given that the remedy will not be initiated or completed for several years. 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. The Company cannot predict the ultimate impact of these proceedings because of the large number of PRPs involved throughout the harbor site, the size and extent of the 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, potential comparative liability between the allocation parties and regarding non-participants, 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 more information develops and the allocation process is completed, and given the resolution of factors like those described above, an unfavorable resolution could have a material adverse effect. As of March 31, 2022 and December 31, 2021, the Company maintained environmental reserves approximating $2,507 and $2,519, respectively. The following table sets forth the Company’s environmental obligation: Environmental liability Balance as of December 31, 2021 $ 2,519 Environmental obligations utilized (12) Balance as of March 31, 2022 $ 2,507 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, 2022. 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, 2022, no such disclosures were considered necessary.

Financial Statements (Policies)

Financial Statements (Policies)	3 Months Ended
	Mar. 31, 2022
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 8 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, 2022 and December 31, 2021 and its Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Comprehensive Loss, Condensed Consolidated Statements of Cash Flows, and Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March 31, 2022 and 2021 have been included. However, actual results could differ from those estimates and changes in those estimates are recorded when known. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. The Condensed Consolidated Balance Sheet as of December 31, 2021 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 L.B. Foster Company’s Annual Report on Form 10-K for the year ended December 31, 2021. 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.
Reclassifications	Reclassifications Certain accounts in the prior year consolidated financial statements have been reclassified for comparative purposes principally to conform to the presentation of the current year period. Effective for the quarter and year ended December 31, 2021, the Company implemented operational changes in how its Chief Operating Decision Maker (“CODM”) manages its businesses, including resource allocation and operating decisions. As a result of these changes, the Company now has three reporting segments, representing the individual businesses that are run separately under the new structure: Rail, Technologies, and Services; Precast Concrete Products; and Steel Products and Measurement. The Company has revised the information for all periods presented in this Quarterly Report on Form 10-Q to reflect these reclassifications.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In March 2020 and as clarified in January 2021, 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 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. The Company is currently evaluating the impacts of the provisions of ASU 2020-04 on its financial condition, results of operations, and cash flows.
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 the FASB’s Accounting Standards Codification (“ASC”) Topic 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, 2022
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following table illustrates the Company’s revenues and profit (loss) from operations by segment for the periods indicated: Three Months Ended Three Months Ended Net Sales Segment Operating Profit (Loss) Net Sales Segment Operating Profit (Loss) Rail, Technologies, and Services $ 63,710 $ 1,039 $ 66,232 $ 2,225 Precast Concrete Products 15,010 (791) 12,678 (112) Steel Products and Measurement 20,074 (2,148) 37,170 (928) Total $ 98,794 $ (1,900) $ 116,080 $ 1,185
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The following table provides a reconciliation of segment net (loss) profit to the Company’s consolidated total for the periods presented: Three Months Ended 2022 2021 Operating (loss) profit for reportable segments $ (1,900) $ 1,185 Interest expense - net (370) (871) Other income (expense) - net 563 (59) Unallocated corporate expenses and other unallocated charges (387) (1,846) Loss before income taxes $ (2,094) $ (1,591)
Reconciliation of Assets from Segment to Consolidated	The following table illustrates assets of the Company by segment for the periods presented: March 31, December 31, Rail, Technologies, and Services $ 161,121 $ 171,608 Precast Concrete Products 52,371 48,740 Steel Products and Measurement 60,050 58,377 Unallocated corporate assets 73,870 63,870 Total $ 347,412 $ 342,595

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table summarizes the Company’s net sales by major product and service category for the periods presented: Three Months Ended 2022 2021 Rail Products and Global Friction Management $ 51,651 $ 55,309 Technology Services and Solutions 12,059 10,923 Rail, Technologies, and Services 63,710 66,232 Precast Concrete Buildings 9,970 10,283 Other Precast Concrete Products 5,040 2,395 Precast Concrete Products 15,010 12,678 Fabricated Steel Products 12,604 27,721 Coatings and Measurement 7,470 9,449 Steel Products and Measurement 20,074 37,170 Total net sales $ 98,794 $ 116,080 Net sales by the timing of the transfer of products and performance of services was as follows for the periods presented: Three Months Ended March 31, 2022 Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Point in time $ 49,166 $ 4,263 $ 15,062 $ 68,491 Over time 14,544 10,747 5,012 30,303 Total net sales $ 63,710 $ 15,010 $ 20,074 $ 98,794 Three Months Ended March 31, 2021 Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Point in time $ 52,044 $ 4,736 $ 29,928 $ 86,708 Over time 14,188 7,942 7,242 29,372 Total net sales $ 66,232 $ 12,678 $ 37,170 $ 116,080

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the changes in goodwill balance by reportable segment for the period presented: Rail, Technologies, Precast Concrete Products Steel Products and Measurement Total Balance as of December 31, 2021 $ 14,577 $ 2,564 $ 3,011 $ 20,152 Foreign currency translation impact (248) — — (248) Balance as of March 31, 2022 $ 14,329 $ 2,564 $ 3,011 $ 19,904
Schedule of Intangible Assets	The components of the Company’s intangible assets were as follows for the periods presented: March 31, 2022 Weighted Average Gross Accumulated Net Patents 10 $ 385 $ (230) $ 155 Customer relationships 18 35,900 (18,626) 17,274 Trademarks and trade names 16 7,780 (4,830) 2,950 Technology 13 35,712 (26,604) 9,108 $ 79,777 $ (50,290) $ 29,487 December 31, 2021 Weighted Average Gross Accumulated Net Patents 10 $ 385 $ (218) $ 167 Customer relationships 18 36,163 (18,222) 17,941 Trademarks and trade names 16 7,801 (4,702) 3,099 Technology 13 35,772 (25,956) 9,816 $ 80,121 $ (49,098) $ 31,023
Estimated Future Amortization	As of March 31, 2022, estimated amortization expense for the remainder of 2022 and thereafter was as follows: Amortization Expense Remainder of 2022 $ 4,280 2023 5,251 2024 4,247 2025 2,479 2026 2,056 2027 and thereafter 11,174 $ 29,487

Accounts Receivable (Tables)

Accounts Receivable (Tables)	3 Months Ended
	Mar. 31, 2022
Accounts Receivable Additional Disclosures [Abstract]
Accounts Receivable, Allowance for Credit Loss	The following table sets forth the Company’s allowance for credit losses: Allowance for Credit Losses Balance as of December 31, 2021 $ 547 Current period provision 61 Write-off against allowance (185) Balance as of March 31, 2022 $ 423

Inventory (Tables)

Inventory (Tables)	3 Months Ended
	Mar. 31, 2022
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories as of March 31, 2022 and December 31, 2021 are summarized in the following table: March 31, December 31, Finished goods $ 29,871 $ 23,822 Work-in-process 8,579 10,738 Raw materials 29,349 28,311 Inventories - net $ 67,799 $ 62,871

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant, and equipment as of March 31, 2022 and December 31, 2021 consisted of the following: March 31, December 31, Land $ 6,215 $ 6,224 Improvements to land and leaseholds 15,412 15,416 Buildings 27,080 27,206 Machinery and equipment, including equipment under finance leases 112,315 112,021 Construction in progress 1,707 1,194 Gross property, plant, and equipment 162,729 162,061 Less accumulated depreciation and amortization, including accumulated amortization of finance leases (105,150) (103,839) Property, plant, and equipment - net $ 57,579 $ 58,222

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Balance Sheet Locations	The balance sheet components of the Company’s leases were as follows as of March 31, 2022 and December 31, 2021: March 31, December 31, Operating leases Operating lease right-of-use assets $ 14,374 $ 15,131 Other accrued liabilities $ 2,816 $ 2,852 Long-term operating lease liabilities 11,558 12,279 Total operating lease liabilities $ 14,374 $ 15,131 Finance leases Property, plant, and equipment $ 1,162 $ 1,162 Accumulated amortization (1,047) (1,011) Property, plant, and equipment - net $ 115 $ 151 Current maturities of long-term debt $ 80 $ 98 Long-term debt 35 53 Total finance lease liabilities $ 115 $ 151
Components of Lease Cost	The components of lease expense within the Company’s Condensed Consolidated Statements of Operations were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Finance lease cost: Amortization of finance leases $ 38 $ 51 Interest on lease liabilities 8 22 Operating lease cost 757 642 Sublease income (50) (50) Total lease cost $ 753 $ 665 The cash flow components of the Company’s leases were as follows for the three months ended March 31, 2022 and 2021: Three Months Ended 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows related to operating leases $ (889) $ (792) Financing cash flows related to finance leases (41) (55) The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows as of the dates presented: March 31, 2022 2021 Operating lease weighted-average remaining lease term 6 7 Operating lease weighted-average discount rate 5.2 % 5.2 % Finance lease weighted-average remaining lease term 1 1 Finance lease weighted-average discount rate 4.1 % 4.2 %
Lessee, Operating Lease, Liability, Maturity	As of March 31, 2022, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2022 and thereafter were as follows: Operating Leases Finance Leases Remainder of 2022 $ 2,607 $ 78 2023 3,288 42 2024 2,945 11 2025 2,375 — 2026 2,170 — 2027 and thereafter 3,165 — Total undiscounted lease payments 16,550 131 Interest (2,176) (16) Total $ 14,374 $ 115
Finance Lease, Liability, Maturity	As of March 31, 2022, estimated annual maturities of lease liabilities remaining for the year ending December 31, 2022 and thereafter were as follows: Operating Leases Finance Leases Remainder of 2022 $ 2,607 $ 78 2023 3,288 42 2024 2,945 11 2025 2,375 — 2026 2,170 — 2027 and thereafter 3,165 — Total undiscounted lease payments 16,550 131 Interest (2,176) (16) Total $ 14,374 $ 115

Long-term Debt and Related Ma_2

Long-term Debt and Related Matters (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long-term debt consisted of the following: March 31, December 31, Revolving credit facility $ 35,496 $ 31,100 Finance leases and financing agreements 115 151 Total 35,611 31,251 Less current maturities (80) (98) Long-term portion $ 35,531 $ 31,153

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of basic and diluted loss per common share for the periods indicated: Three Months Ended 2022 2021 Numerator for basic and diluted loss per common share: Net loss $ (1,586) $ (1,270) Denominator: Weighted average shares outstanding 10,685 10,583 Denominator for basic loss per common share 10,685 10,583 Effect of dilutive securities: Dilutive potential common shares — — Denominator for diluted income (loss) per common share - adjusted weighted average shares outstanding 10,685 10,583 Basic loss per common share $ (0.15) $ (0.12) Diluted loss per common share $ (0.15) $ (0.12)

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2022
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, 2022: Restricted Deferred Performance Weighted Average Outstanding as of December 31, 2021 135,704 74,950 116,571 $ 19.75 Granted 85,472 — 110,600 15.29 Vested (47,691) — (13,095) 18.05 Adjustment for incentive awards expected to vest — — (66,757) 17.02 Cancelled and forfeited (500) — — 18.57 Outstanding as of March 31, 2022 172,985 74,950 147,319 $ 18.17

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
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 $ 18 $ 18 $ — $ — $ 18 $ 18 $ — $ — Interest rate swaps 914 — 914 — 175 — 175 — Total assets $ 932 $ 18 $ 914 $ — $ 193 $ 18 $ 175 $ — Interest rate swaps $ — $ — $ — $ — $ 159 $ — $ 159 $ — Total liabilities $ — $ — $ — $ — $ 159 $ — $ 159 $ —

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2022
Defined Benefit Plan Disclosure
Schedule of Costs of Retirement Plans	The following table summarizes the expense associated with the contributions made to these plans for the periods presented: Three Months Ended 2022 2021 United States $ 305 $ 364 Canada 61 46 United Kingdom 135 119 $ 501 $ 529
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, 2022 and 2021 were as follows: Three Months Ended 2022 2021 Interest cost $ 49 $ 43 Expected return on plan assets (66) (62) Recognized net actuarial loss 18 25 Net periodic pension cost $ 1 $ 6
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, 2022 and 2021 were as follows: Three Months Ended 2022 2021 Interest cost $ 45 $ 28 Expected return on plan assets (81) (65) Amortization of prior service costs and transition amount 6 7 Recognized net actuarial loss 42 83 Net periodic pension cost $ 12 $ 53

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2022
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, 2021 $ 1,042 Additions to warranty liability 16 Warranty liability utilized (299) Balance as of March 31, 2022 $ 759
Schedule Of Future Payments Of Legal Settlements	The expected payments under the UPRR Settlement Agreement for the remainder of the year ending December 31, 2022 and thereafter are as follows: Year Ending December 31, Remainder of 2022 $ 8,000 2023 8,000 2024 8,000 Total $ 24,000
Environmental Loss Contingencies	The following table sets forth the Company’s environmental obligation: Environmental liability Balance as of December 31, 2021 $ 2,519 Environmental obligations utilized (12) Balance as of March 31, 2022 $ 2,507

Financial Statements - Narrativ

Financial Statements - Narrative (Details)	3 Months Ended
	Mar. 31, 2022segment
Accounting Policies [Abstract]
Number of reportable segments	3

Business Segments - Reconciliat

Business Segments - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information
Total net sales	$ 98,794	$ 116,080
Operating loss	(2,287)	(661)
Operating Segments
Segment Reporting Information
Total net sales	98,794	116,080
Operating loss	(1,900)	1,185
Rail, Technologies, and Services
Segment Reporting Information
Total net sales	63,710	66,232
Rail, Technologies, and Services | Operating Segments
Segment Reporting Information
Total net sales	63,710	66,232
Operating loss	1,039	2,225
Precast Concrete Products
Segment Reporting Information
Total net sales	15,010	12,678
Precast Concrete Products | Operating Segments
Segment Reporting Information
Total net sales	15,010	12,678
Operating loss	(791)	(112)
Steel Products and Measurement
Segment Reporting Information
Total net sales	20,074	37,170
Steel Products and Measurement | Operating Segments
Segment Reporting Information
Total net sales	20,074	37,170
Operating loss	$ (2,148)	$ (928)

Business Segments - Reconcili_2

Business Segments - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) profit for reportable segments	$ (2,287)	$ (661)
Other income (expense) - net	563	(59)
Loss before income taxes	(2,094)	(1,591)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) profit for reportable segments	(1,900)	1,185
Interest expense - net	(370)	(871)
Other income (expense) - net	563	(59)
Unallocated corporate expenses and other unallocated charges	(387)	(1,846)
Loss before income taxes	$ (2,094)	$ (1,591)

Business Segments - Reconcili_3

Business Segments - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Information
Assets	$ 347,412	$ 342,595
Operating Segments | Rail, Technologies, and Services
Segment Reporting Information
Assets	161,121	171,608
Operating Segments | Precast Concrete Products
Segment Reporting Information
Assets	52,371	48,740
Operating Segments | Steel Products and Measurement
Segment Reporting Information
Assets	60,050	58,377
Unallocated corporate assets
Segment Reporting Information
Assets	$ 73,870	$ 63,870

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Disaggregation of Revenue
Revenue recognized	$ 98,794	$ 116,080
Contract assets - net	34,268		$ 36,179
Contract with customer, liability	3,682		$ 3,235
Contract assets transferred to receivables	11,607
Cash proceeds from liability contract	1,957
Revenue recognized from contract liability	$ 1,441	$ 676
Over time
Disaggregation of Revenue
Customer revenue transferred (percentage)	30.70%	25.30%
Revenue recognized	$ 30,303	$ 29,372
Over time | Performance Based
Disaggregation of Revenue
Revenue recognized	19,322	21,108
Over time | Delivery Based
Disaggregation of Revenue
Revenue recognized	$ 10,981	$ 8,264
Point in time
Disaggregation of Revenue
Customer revenue transferred (percentage)	69.30%	74.70%
Revenue recognized	$ 68,491	$ 86,708

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue
Total net sales	$ 98,794	$ 116,080
Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	63,710	66,232
Precast Concrete Products
Disaggregation of Revenue
Total net sales	15,010	12,678
Steel Products and Measurement
Disaggregation of Revenue
Total net sales	20,074	37,170
Rail Products and Global Friction Management | Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	51,651	55,309
Technology Services and Solutions | Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	12,059	10,923
Precast Concrete Buildings | Precast Concrete Products
Disaggregation of Revenue
Total net sales	9,970	10,283
Other Precast Concrete Products | Precast Concrete Products
Disaggregation of Revenue
Total net sales	5,040	2,395
Fabricated Steel Products | Steel Products and Measurement
Disaggregation of Revenue
Total net sales	12,604	27,721
Coatings and Measurement | Steel Products and Measurement
Disaggregation of Revenue
Total net sales	$ 7,470	$ 9,449

Revenue - Timing of Transfer (D

Revenue - Timing of Transfer (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue
Total net sales	$ 98,794	$ 116,080
Point in time
Disaggregation of Revenue
Total net sales	68,491	86,708
Over time
Disaggregation of Revenue
Total net sales	30,303	29,372
Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	63,710	66,232
Rail, Technologies, and Services | Point in time
Disaggregation of Revenue
Total net sales	49,166	52,044
Rail, Technologies, and Services | Over time
Disaggregation of Revenue
Total net sales	14,544	14,188
Precast Concrete Products
Disaggregation of Revenue
Total net sales	15,010	12,678
Precast Concrete Products | Point in time
Disaggregation of Revenue
Total net sales	4,263	4,736
Precast Concrete Products | Over time
Disaggregation of Revenue
Total net sales	10,747	7,942
Steel Products and Measurement
Disaggregation of Revenue
Total net sales	20,074	37,170
Steel Products and Measurement | Point in time
Disaggregation of Revenue
Total net sales	15,062	29,928
Steel Products and Measurement | Over time
Disaggregation of Revenue
Total net sales	$ 5,012	$ 7,242

Revenue - Remaining Performance

Revenue - Remaining Performance Obligation (Details) $ in Thousands	Mar. 31, 2022USD ($)
Revenue from Contract with Customer [Abstract]
Revenue remaining performance obligation	$ 244,618
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue remaining performance obligation	$ 244,618
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue remaining performance obligation (percentage)	10.80%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Goodwill
Goodwill, beginning balance	$ 20,152
Foreign currency translation impact	(248)
Goodwill, ending balance	19,904
Rail, Technologies, and Services
Goodwill
Goodwill, beginning balance	14,577
Foreign currency translation impact	(248)
Goodwill, ending balance	14,329
Precast Concrete Products
Goodwill
Goodwill, beginning balance	2,564
Foreign currency translation impact	0
Goodwill, ending balance	2,564
Steel Products and Measurement
Goodwill
Goodwill, beginning balance	3,011
Foreign currency translation impact	0
Goodwill, ending balance	$ 3,011

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, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets
Gross Carrying Value	$ 79,777	$ 80,121
Accumulated Amortization	(50,290)	(49,098)
Net Carrying Amount	29,487	31,023
Patents
Finite-Lived Intangible Assets
Gross Carrying Value	385	385
Accumulated Amortization	(230)	(218)
Net Carrying Amount	155	167
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Value	35,900	36,163
Accumulated Amortization	(18,626)	(18,222)
Net Carrying Amount	17,274	17,941
Trademarks and trade names
Finite-Lived Intangible Assets
Gross Carrying Value	7,780	7,801
Accumulated Amortization	(4,830)	(4,702)
Net Carrying Amount	2,950	3,099
Technology
Finite-Lived Intangible Assets
Gross Carrying Value	35,712	35,772
Accumulated Amortization	(26,604)	(25,956)
Net Carrying Amount	$ 9,108	$ 9,816
Weighted Average
Finite-Lived Intangible Assets
Weighted Average Amortization Period In Years	16 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	13 years	13 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Finite-Lived Intangible Assets
Amortization expense	$ 1,436	$ 1,465
Minimum
Finite-Lived Intangible Assets
Finite lived intangible asset, useful life	5 years
Maximum
Finite-Lived Intangible Assets
Finite lived intangible asset, useful life	25 years
Weighted Average
Finite-Lived Intangible Assets
Finite lived intangible asset, useful life	16 years

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Expected Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2022	$ 4,280
2023	5,251
2024	4,247
2025	2,479
2026	2,056
2027 and thereafter	11,174
Net Carrying Amount	$ 29,487	$ 31,023

Accounts Receivable - Narrative

Accounts Receivable - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance doubtful accounts, receivables	$ 423		$ 547
Current period provision	61
Selling, General and Administrative Expenses
Financing Receivable, Allowance for Credit Loss [Line Items]
Current period provision	$ 61	$ (22)

Accounts Receivable - Allowance

Accounts Receivable - Allowance for Credit Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Allowance for Doubtful Accounts
Allowance for doubtful accounts, beginning balance	$ 547
Current period provision	61
Write-off against allowance	(185)
Allowance for doubtful accounts, ending balance	$ 423

Inventory - Schedule of Invento

Inventory - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Finished goods	$ 29,871	$ 23,822
Work-in-process	8,579	10,738
Raw materials	29,349	28,311
Inventories - net	$ 67,799	$ 62,871

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property, Plant and Equipment
Gross property, plant, and equipment	$ 162,729,000		$ 162,061,000
Less accumulated depreciation and amortization, including accumulated amortization of finance leases	(105,150,000)		(103,839,000)
Property, plant, and equipment - net	57,579,000		58,222,000
Depreciation	1,938,000	$ 1,990,000
Impairments of property, plant, and equipment	0	$ 0
Land
Property, Plant and Equipment
Gross property, plant, and equipment	6,215,000		6,224,000
Improvements to land and leaseholds
Property, Plant and Equipment
Gross property, plant, and equipment	15,412,000		15,416,000
Buildings
Property, Plant and Equipment
Gross property, plant, and equipment	27,080,000		27,206,000
Machinery and equipment, including equipment under finance leases
Property, Plant and Equipment
Gross property, plant, and equipment	112,315,000		112,021,000
Construction in progress
Property, Plant and Equipment
Gross property, plant, and equipment	$ 1,707,000		$ 1,194,000

Leases - Narrative (Details)

Leases - Narrative (Details)	3 Months Ended
	Mar. 31, 2022
Lessee, Lease, Description
Lease renewal term	12 years
Lease termination period	1 year
Minimum
Lessee, Lease, Description
Lease term	2 years
Maximum
Lessee, Lease, Description
Lease term	12 years

Leases - Balance Sheet Location

Leases - Balance Sheet Location (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Operating leases
Operating lease right-of-use assets	$ 14,374	$ 15,131
Other accrued liabilities	2,816	2,852
Long-term operating lease liabilities	11,558	12,279
Total operating lease liabilities	14,374	15,131
Finance leases
Property, plant, and equipment	1,162	1,162
Accumulated amortization	(1,047)	(1,011)
Property, plant, and equipment - net	115	151
Current maturities of long-term debt	80	98
Long-term debt	35	53
Total finance lease liabilities	$ 115	$ 151
Operating lease, liability, current, statement of financial position	Other accrued liabilities	Other accrued liabilities
Finance lease, right-of-use asset, statement of financial position	Property, plant, and equipment - net	Property, plant, and equipment - net
Finance lease, liability, current, statement of financial position	Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Finance lease, liability, noncurrent, statement of financial position	Long-term portion	Long-term portion

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Finance lease cost:
Amortization of finance leases	$ 38	$ 51
Interest on lease liabilities	8	22
Operating lease cost	757	642
Sublease income	(50)	(50)
Total lease cost	$ 753	$ 665

Leases - Cash Flow Components (

Leases - Cash Flow Components (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows related to operating leases	$ (889)	$ (792)
Financing cash flows related to finance leases	$ (41)	$ (55)

Leases - Weighted Average Lease

Leases - Weighted Average Lease Term and Discount Rate (Details)	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Operating lease weighted-average remaining lease term	6 years	7 years
Operating lease weighted-average discount rate	5.20%	5.20%
Finance lease weighted-average remaining lease term	1 year	1 year
Finance lease weighted-average discount rate	4.10%	4.20%

Leases - Estimated Annual Matur

Leases - Estimated Annual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Operating Leases
Remainder of 2022	$ 2,607
2023	3,288
2024	2,945
2025	2,375
2026	2,170
2027 and thereafter	3,165
Total undiscounted lease payments	16,550
Interest	(2,176)
Total	14,374	$ 15,131
Finance Leases
Remainder of 2022	78
2023	42
2024	11
2025	0
2026	0
2027 and thereafter	0
Total undiscounted lease payments	131
Interest	(16)
Total	$ 115	$ 151

Long-term Debt and Related Ma_3

Long-term Debt and Related Matters - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Revolving credit facility	$ 35,496	$ 31,100
Finance leases and financing agreements	115	151
Total	35,611	31,251
Less current maturities	(80)	(98)
Long-term portion	$ 35,531	$ 31,153

Long-term Debt and Related Ma_4

Long-term Debt and Related Matters - Narrative (Details)	Aug. 13, 2021USD ($)	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)
Line of Credit Facility
Line of credit facility, amount outstanding		$ 35,496,000	$ 31,100,000
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Fourth Amended And Restated Credit Agreement
Line of Credit Facility
Minimum interest coverage ratio	1.05
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Fourth Amended And Restated Credit Agreement | Debt Instrument, Redemption, Period One
Line of Credit Facility
Minimum leverage ratio	3.25
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Fourth Amended And Restated Credit Agreement | Debt Instrument, Redemption, Period Two
Line of Credit Facility
Minimum leverage ratio	3.5
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Overnight Bank Funding Rate | Fourth Amended And Restated Credit Agreement
Line of Credit Facility
Debt instrument, basis spread on variable rate	0.50%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | LIBOR | Fourth Amended And Restated Credit Agreement
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.00%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | LIBOR | Fourth Amended And Restated Credit Agreement | Minimum
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.25%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | LIBOR | Fourth Amended And Restated Credit Agreement | Maximum
Line of Credit Facility
Debt instrument, basis spread on variable rate	2.25%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Base Rate | Fourth Amended And Restated Credit Agreement | Minimum
Line of Credit Facility
Debt instrument, basis spread on variable rate	0.25%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Base Rate | Fourth Amended And Restated Credit Agreement | Maximum
Line of Credit Facility
Debt instrument, basis spread on variable rate	1.25%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Revolving credit facility
Line of Credit Facility
Liquidity covenant	$ 15,000,000
Line of credit facility, amount outstanding		636,000
Line of credit facility, current borrowing capacity		$ 93,868,000
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Revolving credit facility | Debt Instrument, Redemption, Period One
Line of Credit Facility
Acquisition consideration threshold, per acquisition	$ 50,000,000
Acquisition consideration threshold percent	275.00%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Revolving credit facility | Debt Instrument, Redemption, Period Two
Line of Credit Facility
Acquisition consideration threshold, per acquisition	$ 75,000,000
Acquisition consideration threshold percent	175.00%
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Revolving credit facility | Prior Credit Facility
Line of Credit Facility
Line of credit facility increase over previous commitment	$ 15,000,000
PNC Bank N.A. Citizens Bank N.A. Wells Fargo Bank National Association Bank of America N.A. And BMO Harris Bank National Association | Revolving credit facility | Fourth Amended And Restated Credit Agreement
Line of Credit Facility
Debt instrument term	5 years
Line of credit facility, maximum borrowing capacity	$ 130,000,000
Line of credit, accordion feature, lower borrowing capacity option	25,000,000
Maximum increase in commitments	$ 50,000,000

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, 2022	Mar. 31, 2021
Numerator for basic and diluted loss per common share:
Net loss	$ (1,586)	$ (1,270)
Denominator:
Weighted average shares outstanding (in shares)	10,685,000	10,583,000
Denominator for basic income (loss) per common share (in shares)	10,685,000	10,583,000
Effect of dilutive securities:
Dilutive potential common shares (in shares)	0	0
Denominator for diluted income (loss) per common share - adjusted weighted average shares outstanding (in shares)	10,685,000	10,583,000
Basic income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Diluted income (loss) per common share (usd per share)	$ (0.15)	$ (0.12)
Anti-dilutive shares (in shares)	122,000	140,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax benefit	$ (508)	$ (321)
Loss before income taxes	$ (2,094)	$ (1,591)
Effective income tax rate (percent)	24.30%	20.20%

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation	$ 258	$ 827
Expected cost on shares expected to vest	$ 4,064
Recognition period for compensation expense not yet recognized	3 years 10 months 24 days
Director
Share-based Compensation Arrangement by Share-based Payment Award
Deferred receipt period	6 months
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation	$ 258	827
Restricted Stock | Vesting period one
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	3 years
Restricted Stock | Vesting period two | 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
Stock-based compensation	$ 258	$ 827
Vesting period	3 years

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock and Performance Share Units (Details)	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Weighted Average Grant Date Fair Value
Outstanding, Beginning balance (usd per share) | $ / shares	$ 19.75
Granted (usd per share) | $ / shares	15.29
Vested (usd per share) | $ / shares	18.05
Adjustment for incentive awards expected to vest (usd per share) | $ / shares	17.02
Weighted average grant date fair value, cancelled and forfeited (usd per share) | $ / shares	18.57
Outstanding, Ending balance (usd per share) | $ / shares	$ 18.17
Restricted Stock
Restricted Stock, Deferred Stock Units and Performance Share Units
Outstanding, Beginning balance (in shares)	135,704
Granted (in shares)	85,472
Vested (in shares)	(47,691)
Adjustment for incentive awards expected to vest (in shares)	0
Cancelled and forfeited (in shares)	(500)
Outstanding, Ending balance (in shares)	172,985
Deferred Stock Units
Restricted Stock, Deferred Stock Units and Performance Share Units
Outstanding, Beginning balance (in shares)	74,950
Granted (in shares)	0
Vested (in shares)	0
Adjustment for incentive awards expected to vest (in shares)	0
Cancelled and forfeited (in shares)	0
Outstanding, Ending balance (in shares)	74,950
Performance Share Units
Restricted Stock, Deferred Stock Units and Performance Share Units
Outstanding, Beginning balance (in shares)	116,571
Granted (in shares)	110,600
Vested (in shares)	(13,095)
Adjustment for incentive awards expected to vest (in shares)	(66,757)
Cancelled and forfeited (in shares)	0
Outstanding, Ending balance (in shares)	147,319

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Interest expense	$ 370	$ 871
Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative, notional amount	50,000
Interest expense	97	$ 235
Swap 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative, notional amount	$ 20,000

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	$ 18	$ 18
Interest rate swaps	914	175
Total assets	932	193
Interest rate swaps	0	159
Total liabilities	0	159
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	18	18
Interest rate swaps	0	0
Total assets	18	18
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
Interest rate swaps	914	175
Total assets	914	175
Interest rate swaps	0	159
Total liabilities	0	159
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Term deposits	0	0
Interest rate swaps	0	0
Total assets	0	0
Interest rate swaps	0	0
Total liabilities	$ 0	$ 0

Retirement Plans - Narrative (D

Retirement Plans - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)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, contributions by employer | $	$ 115
Defined benefit plan, expected future employer contributions, current fiscal year | $	$ 460
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 plan, contributions by employer | $	$ 82
Defined benefit plan, expected future employer contributions, current fiscal year | $	$ 315

Retirement Plans - Schedule Of

Retirement Plans - Schedule Of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
United States
Defined Benefit Plan Disclosure
Interest cost	$ 49	$ 43
Expected return on plan assets	(66)	(62)
Recognized net actuarial loss	18	25
Net periodic pension cost	1	6
United Kingdom
Defined Benefit Plan Disclosure
Interest cost	45	28
Expected return on plan assets	(81)	(65)
Amortization of prior service costs and transition amount	6	7
Recognized net actuarial loss	42	83
Net periodic pension cost	$ 12	$ 53

Retirement Plans - Schedule o_2

Retirement Plans - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Contribution Plan Disclosure
Expenses associated with contributions made	$ 501	$ 529
United States
Defined Contribution Plan Disclosure
Expenses associated with contributions made	305	364
Canada
Defined Contribution Plan Disclosure
Expenses associated with contributions made	61	46
United Kingdom
Defined Contribution Plan Disclosure
Expenses associated with contributions made	$ 135	$ 119

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Schedule of Product Warranty Liability (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Warranty Liability
Beginning balance	$ 1,042
Additions to warranty liability	16
Warranty liability utilized	(299)
Ending balance	$ 759

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Narrative (Details) $ in Thousands	Mar. 13, 2019USD ($)	Mar. 31, 2022USD ($)company	Dec. 31, 2021USD ($)	Jun. 05, 2017company
Product Liability Contingency
Litigation settlement amount		$ 24,000
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		$ 2,507	$ 2,519
UPRR
Product Liability Contingency
Annual commitment amount	$ 8,000	$ 6,000
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_5

Commitments and Contingent Liabilities - Future Payments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2022	$ 8,000
2023	8,000
2024	8,000
Total	$ 24,000

Commitments and Contingent Li_6

Commitments and Contingent Liabilities - Environmental Loss Contingencies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Accrual for Environmental Loss Contingencies
Environmental liability, beginning balance	$ 2,519
Environmental obligations utilized	(12)
Environmental liability, ending balance	$ 2,507