Balance Sheet Components

9 Months Ended

Mar. 31, 2025

Balance Sheet Related Disclosures [Abstract]

Accounts receivable, net:


	March 31, 2025		June 30, 2024
	(in thousands)
Accounts receivable	$	74,783	$	54,265
Less: Allowance for price adjustments	(46,313)		(41,689)
Less: Allowance for credit losses	(30)		(30)
Accounts receivable, net	$	28,440	$	12,546

Inventories:


	March 31, 2025		June 30, 2024
	(in thousands)
Raw materials	$	80,805	$	78,064
Work-in-process	90,162		87,898
Finished goods	17,159		29,788
	$	188,126	$	195,750

Other current assets:


	March 31, 2025		June 30, 2024
	(in thousands)
Value-added tax receivable	$	385	$	304
Other prepaid expenses	2,453		1,822
Prepaid insurance	826		4,623
Prepaid maintenance	1,292		2,195
Deposit with supplier	5,308		1,301
Prepaid income tax	1,259		819
Interest receivable	247		383
Short term deposit	510		21

Other receivables	975		2,697

	$	13,255	$	14,165

Property, plant and equipment, net:


	March 31, 2025		June 30, 2024
	(in thousands)
Land	$	4,877	$	4,877

Building and building improvements	71,640		71,266
Manufacturing machinery and equipment	430,135		423,960
Equipment and tooling	36,454		36,203
Computer equipment and software	52,976		53,081
Office furniture and equipment	3,206		3,193
Leasehold improvements	43,340		41,671

	642,628		634,251
Less: accumulated depreciation and amortization	(357,858)		(320,751)
	284,770		313,500
Equipment and construction in progress	31,473		23,119
Property, plant and equipment, net	$	316,243	$	336,619

Intangible assets, net:


	March 31, 2025		June 30, 2024
	(in thousands)
Patents and technology rights	$	18,037	$	18,037
Trade name	268		268
Customer relationships	1,150		1,150
	19,455		19,455
Less: accumulated amortization	(18,643)		(16,208)
	812		3,247
Goodwill	269		269
Intangible assets, net	$	1,081	$	3,516

Future amortization expense of intangible assets is as follows (in thousands):


Year ending June 30,
2025 (Remaining)	$	812

Other long-term assets:


	March 31, 2025		June 30, 2024
	(in thousands)
Prepayments for property and equipment	$	2,032	$	620
Investment in a privately held company	—		100



Customs deposit	826		652
Deposit with supplier	18,080		22,117

Office leases deposits	1,305		1,418
Other	441		332
	$	22,684	$	25,239

Accrued liabilities:


	March 31, 2025		June 30, 2024
	(in thousands)
Accrued compensation and benefits	$	17,184	$	14,945


Warranty accrual	2,049		2,407
Stock rotation accrual	4,975		4,660
Accrued professional fees	2,758		3,198


Accrued inventory	2,201		728
Accrued facilities related expenses	2,322		2,137

Accrued property, plant and equipment	6,050		6,986
Other accrued expenses	4,646		3,822
Customer deposits	18,903		32,182
ESPP payable	3,304		1,306
	$	64,392	$	72,371

Short-term customer deposits are payments received from customers for securing future product shipments. As of March 31, 2025, $7.0 million for such deposits were from Customer A, $2.0 million were from Customer B, and $9.9 million were from other customers. As of June 30, 2024, $9.0 million were from Customer A, $8.9 million were from Customer B, and $14.3 million were from other customers.

The activities in the warranty accrual, included in accrued liabilities, are as follows:


	Nine Months Ended March 31,
	2025		2024
	(in thousands)
Beginning balance	$	2,407	$	1,674
Additions	884		773
Released	(700)		—
Utilization	(542)		(165)
Ending balance	$	2,049	$	2,282

The activities in the stock rotation accrual, included in accrued liabilities, are as follows:


	Nine Months Ended March 31,
	2025		2024
	(in thousands)
Beginning balance	$	4,660	$	5,588
Additions	8,175		7,849
Utilization	(7,860)		(8,759)
Ending balance	$	4,975	$	4,678

Other long-term liabilities:


	March 31, 2025		June 30, 2024
	(in thousands)

Customer deposits	$	8,000	$	19,661
Computer software liabilities	53		—

Other long-term liabilities	$	8,053	$	19,661

Customer deposits are payments received from customers for securing future product shipments. As of March 31, 2025, $5.0 million for such deposits were from Customer A, $1.0 million were from Customer B, and $2.0 million were from other customers. As of June 30, 2024, $12.0 million were from Customer A, $2.0 million were from Customer B, and $5.7 million were from other customers.