Summary of Significant Accounting Policies and Other Information (Tables)

12 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedules of Concentration of Risk, by Risk Factor

The following table presents customers individually accounting for more than 10% of the Company’s net sales:

	For the Year Ended December 31,
	2022		2021
Customer A	19	%	17	%
Customer B	**		21	%

The following table presents customers individually accounting for more than 10% of the Company’s trade accounts receivable:

	As of December 31,
	2022		2021
Customer A	30	%	24	%

The following table presents suppliers individually accounting for more than 10% of the Company’s purchases:

	For the Year Ended December 31,
	2022		2021
Supplier B	**		12	%
Supplier C	10	%	**

**    Less than 10% of the total

Schedule of Inventory, Current

Inventories consist of the following:

(in thousands)	As of December 31,
Inventories	2022		2021
Raw materials	$	101,566	$	120,130
Work in process	3,073		8,923
Finished goods	19,825		16,509
Total inventories	124,464		145,562
Inventory allowance	(3,904)		(3,370)
Inventories, net	$	120,560	$	142,192

Activity in the Company’s inventory allowance was as follows:

(in thousands)	For the Year Ended December 31,
Inventory Allowance	2022		2021
Balance at beginning of period	$	3,370	$	3,328
Charged to expense	1,159		1,035
Write-offs	(625)		(993)
Balance at end of period	$	3,904	$	3,370

Summary of Property, Plant and Equipment

Estimated useful lives by each type of asset category are as follows:

	Years
Buildings	Up to 39
Leasehold improvements	Lesser of (i) expected useful life of improvement or (ii) life of lease (including likely extension thereof)
Machinery and equipment	1 to 10

Property, plant and equipment by type were as follows:

(in thousands)	As of December 31,
Property, Plant and Equipment	2022		2021
Leasehold improvements	$	7,107	$	7,107
Machinery and equipment	45,747		44,358
Construction in progress	467		1,125
Total property, plant and equipment, at cost	53,321		52,590
Accumulated depreciation	(39,477)		(35,246)
Property, plant and equipment, net	$	13,844	$	17,344

Schedule of Other Accrued Liabilities

Other accrued liabilities consisted of the following:

(in thousands)	As of December 31,
Other Accrued Liabilities	2022		2021
Accrued product warranty	$	13,037	$	15,830
Litigation reserves *	2,102		894
Contract liabilities	2,256		1,819
Accrued compensation and benefits	7,299		4,397
Accrued interest expense	5,257		625
Other	4,158		7,258
Total	$	34,109	$	30,823

*As of December 31, 2021 and 2022, litigation reserves related to various ongoing legal matters including associated legal fees.

Schedule of Product Warranty Liability

Accrued product warranty activities are presented below:

(in thousands)	For the Year Ended December 31,
Accrued Product Warranty	2022		2021
Balance at beginning of year	$	32,948	$	31,542
Current year provision *	6,258		18,242
Changes in estimates for preexisting warranties **	4,576		9,397
Payments made during the period	(22,232)		(26,233)
Balance at end of year	21,550		32,948
Less: Current portion	13,037		15,830
Noncurrent accrued product warranty	$	8,513	$	17,118

*Warranty costs, net of supplier recoveries, and other adjustments, were $6.4 million and $22.8 million for the year ended December 31, 2022 and 2021, respectively. Supplier recoveries were $4.1 million and $4.8 million for the year ended December 31, 2022 and 2021, respectively.

**Changes in estimates for preexisting warranties reflect changes in the Company’s estimate of warranty costs for products sold in prior periods. Such adjustments typically occur when claims experience deviates from historical and expected trends. As of December 31, 2022, the Company recorded a cost for changes in estimates of preexisting warranties of $4.6 million, or $0.20 per diluted share, for the year ended December 31, 2022, which includes a favorable experience for preexisting warranties attributable to a contract revision during the quarter ended March 31, 2022, and costs of $9.4 million, or $0.41 per diluted share, for the year ended December 31, 2021.