Inventories (Tables)

3 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Inventories

The components of inventories and related changes in the allowance for excess and obsolete inventories account are as follows:

	March 31, 2023		December 31, 2022
	(in thousands)
Raw materials	$	194,668	$	194,159
Work in process	4,338		3,501
Finished goods	5,321		5,806
Total, gross	204,327		203,466
Less:  Allowance for excess and obsolete inventories	(4,748)		(4,527)
Total, net	$	199,579	$	198,939

Inventories (Allowance)

	Three Months Ended
	March 31, 2023		March 31, 2022
Allowance for excess and obsolete inventories:	(in thousands)
Balance, beginning of period	$	4,527	$	1,787
Provision for excess and obsolete	664		220
inventories
Inventories written off	(443)		—
Balance, end of period	$	4,748	$	2,007