Revenue (Tables)

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table summarizes net sales by end market:

(in thousands)	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
End Market	2023		2022		2023		2022
Power Systems	$	60,405	$	42,693	$	159,491	$	127,904
Industrial	40,354		59,419		128,819		163,671
Transportation	15,125		22,788		65,908		52,751
Total	$	115,884	$	124,900	$	354,218	$	344,326

Schedule of Revenue from External Customers by Geographic Areas

The following table summarizes net sales by geographic area:

(in thousands)	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
Geographic Area	2023		2022		2023		2022
United States	$	96,899	$	89,661	$	285,761	$	250,026
North America (outside of United States)	4,484		2,903		16,605		10,623
Pacific Rim	9,485		20,083		36,036		56,599
Europe	4,273		7,028		11,238		13,787
Other	743		5,225		4,578		13,291
Total	$	115,884	$	124,900	$	354,218	$	344,326

Schedule of Contract Balances

(in thousands)	As of September 30, 2023		As of December 31, 2022		As of December 31, 2021
Short-term contract assets (included in Prepaid expenses and other current assets)	$	15,668	$	3,620	$	2,707
Short-term contract liabilities (included in Other accrued liabilities)	(2,522)		(2,256)		(1,819)
Long-term contract liabilities (included in Noncurrent contract liabilities)	(2,605)		(3,199)		(3,330)
Net contract assets (liabilities)	$	10,541	$	(1,835)	$	(2,442)