Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

For the years ended December 31, 2021 and 2020, net sales by the timing of the transfer of goods and services were as follows:

Year Ended December 31, 2021	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	232,880	$	21,351	$	105,758	$	359,989
Over time	66,869		49,639		37,123		153,631
Total net sales	$	299,749	$	70,990	$	142,881	$	513,620
Year Ended December 31, 2020	Rail, Technologies, and Services		Precast Concrete Products		Steel Products and Measurement		Total
Point in time	$	212,212	$	20,443	$	118,736	$	351,391
Over time	64,235		42,871		38,914		146,020
Total net sales	$	276,447	$	63,314	$	157,650	$	497,411