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BALANCE SHEET COMPONENTS (Tables)

6 Months Ended

Jun. 30, 2023

Our inventory, net, consisted of the following components (in thousands):

In addition to IPR&D, definite-lived intangible assets included the following (in thousands, except years):


		As of June 30, 2023						As of December 31, 2022
	Estimated Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Developed technology	15	$	11,179	$	(1,415)	$	9,764	$	11,179	$	(1,039)	$	10,140
Customer relationships	2	360		(345)		15		360		(255)		105
Total		$	11,539	$	(1,760)	$	9,779	$	11,539	$	(1,294)	$	10,245

The estimated future amortization expense of intangible assets with definite lives is as follows (in thousands):

Changes in the reserve for product warranties were as follows for the periods indicated (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Balance at beginning of period	$	1,624	$	1,174	$	1,651	$	594
Additions charged to cost of product revenue	2,247		912		2,851		1,865
Repairs and replacements	(1,009)		(477)		(1,640)		(850)
Balance at end of period	$	2,862	$	1,609	$	2,862	$	1,609

The following table presents the future principal payments on the term loans (in thousands):