Revenue (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Revenues by Major Product Line

The following table summarizes the Company’s net sales by major product and service category for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Rail Products and Global Friction Management	$	81,926	$	70,416	$	137,974	$	122,067
Technology Services and Solutions	9,690		11,381		18,026		23,440
Rail, Technologies, and Services	91,616		81,797		156,000		145,507
Precast Concrete Buildings	19,325		15,811		30,211		25,781
Precast Infrastructure Products	14,540		7,800		27,942		12,840
Precast Concrete Products	33,865		23,611		58,153		38,621
Fabricated Steel Products	14,854		17,967		25,371		30,571
Coatings and Measurement	7,699		8,140		23,998		15,610
Steel Products and Measurement	22,553		26,107		49,369		46,181
Total net sales	$	148,034	$	131,515	$	263,522	$	230,309

Schedule of Disaggregation of Revenue

Net sales by the timing of the transfer of goods and services was as follows for the periods presented:

	Three Months Ended June 30, 2023
	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	75,923	$	14,540	$	20,407	$	110,870
Over time	15,693		19,325		2,146		37,164
Total net sales	$	91,616	$	33,865	$	22,553	$	148,034
	Three Months Ended June 30, 2022
	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	65,872	$	8,577	$	20,964	$	95,413
Over time	15,925		15,034		5,143		36,102
Total net sales	$	81,797	$	23,611	$	26,107	$	131,515

	Six Months Ended June 30, 2023
	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	129,757	$	27,942	$	36,133	$	193,832
Over time	26,243		30,211		13,236		69,690
Total net sales	$	156,000	$	58,153	$	49,369	$	263,522
	Six Months Ended June 30, 2022
	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	115,038	$	12,840	$	36,026	$	163,904
Over time	30,469		25,781		10,155		66,405
Total net sales	$	145,507	$	38,621	$	46,181	$	230,309

Revenue recognized over time was as follows for the periods presented:

	Three Months Ended June 30,				Percentage of Total Net Sales Three Months Ended June 30,
	2023		2022		2023		2022
Over time input method	$	15,724	$	20,089	10.6	%	15.3	%
Over time output method	21,440		16,013		14.5		12.2
Total over time sales	$	37,164	$	36,102	25.1	%	27.5	%

	Six Months Ended June 30,				Percentage of Total Net Sales Six Months Ended June 30,
	2023		2022		2023		2022
Over time input method	$	31,935	$	39,411	12.1	%	17.1	%
Over time output method	37,755		26,994		14.3		11.7
Total over time sales	$	69,690	$	66,405	26.4	%	28.8	%

Schedule of Contract with Customer, Contract Asset, Contract Liability

The following table sets forth the Company’s contract assets:

	Contract Assets
Balance as of December 31, 2022	$	33,613
Net additions to contract assets	4,797
Transfers from contract asset balance to accounts receivable	(4,399)
Balance as of June 30, 2023	$	34,011

The following table sets forth the Company’s contract liabilities:

	Contract Liabilities
Balance as of December 31, 2022	$	6,781
Revenue recognized from contract liabilities	(4,049)
Increase in billings in excess of cost, excluding revenue recognized	3,525
Other adjustments, including business divestiture	(1,938)
Balance as of June 30, 2023	$	4,319