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Balance Sheet Components (Tables)
9 Months Ended
Mar. 31, 2018
Balance Sheet Related Disclosures [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable
Accounts receivable, net:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
Accounts receivable
$
49,607

 
$
48,039

Less: Allowance for price adjustments
(20,650
)
 
(19,599
)
Less: Allowance for doubtful accounts
(30
)
 
(30
)
Accounts receivable, net
$
28,927

 
$
28,410

Schedule of Inventory, Current
Inventories:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
Raw materials
$
45,295

 
$
32,118

Work in-process
36,252

 
36,081

Finished goods
8,925

 
8,055

 
$
90,472

 
$
76,254

Other Current Assets
Other current assets:
 
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
VAT receivable
$
12,979

 
$
591

Other prepaid expenses
2,438

 
2,171

Prepayment to supplier
611

 
148

Prepaid income tax
536

 
1,356

Other receivable
551

 
617

 
$
17,115

 
$
4,883

Property, Plant and Equipment
operty, plant and equipment, net:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
Land
$
4,877

 
$
4,877

Building
4,325

 
4,325

Manufacturing machinery and equipment
250,341

 
215,275

Equipment and tooling
15,098

 
13,549

Computer equipment and software
25,310

 
24,346

Office furniture and equipment
2,150

 
1,935

Leasehold improvements
29,740

 
29,136

Land use rights
9,566

 
8,849

 
341,407

 
302,292

Less: accumulated depreciation
(222,568
)
 
(194,882
)
 
118,839

 
107,410

Equipment and construction in progress
139,956

 
40,781

Property, plant and equipment, net
$
258,795

 
$
148,191

Intangible Assets Disclosure
Intangible assets, net:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
License fees
$
17,633

 
$
1,248

Trade name
268

 
268

Customer relationships
1,150

 
1,150

 
19,051

 
2,666

Less: accumulated amortization
(2,701
)
 
(2,653
)
 
16,350

 
13

Goodwill
269

 
269

Intangible assets, net
$
16,619

 
$
282

Schedule of Other Assets, Noncurrent
Other long-term assets:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
Prepayments for property and equipment
$
47,523

 
$
12,964

Investment in a privately held company
700

 
700

Prepaid income tax

 
4,377

Long-term deposits
4,246

 
1,608

Other
361

 
216

 
$
52,830

 
$
19,865

Schedule of Accrued Liabilities
Accrued liabilities:
 
March 31,
2018
 
June 30,
2017
 
(in thousands)
Accrued compensation and benefits
$
13,878

 
$
13,727

Warranty accrual
611

 
1,866

Stock rotation accrual
1,774

 
1,871

Accrued professional fees
1,903

 
2,500

Accrued inventory
703

 
410

Accrued facilities related expenses
1,824

 
1,501

Accrued property, plant and equipment
33,755

 
2,241

Other accrued expenses
7,169

 
4,270

 
$
61,617

 
$
28,386

Schedule of Product Warranty Liability
The activities in the warranty accrual, included in accrued liabilities, are as follows
 
Nine Months Ended March 31,
 
2018
 
2017
 
(in thousands)
Beginning balance
$
1,866

 
$
1,495

Additions (Reductions)
(1,203
)
*
898

Utilization
(52
)
 
(521
)
Ending balance
$
611

 
$
1,872


* Released a specific warranty reserve of approximately $1.0 million as the warranty period had expired.
Stock Rotation Accrual
The activities in the stock rotation accrual, included in accrued liabilities, are as follows:
 
Nine Months Ended March 31,
 
2018
 
2017
 
(in thousands)
Beginning balance
$
1,871

 
$
1,988

Additions
2,147

 
3,986

Utilization
(2,244
)
 
(4,262
)
Ending balance
$
1,774

 
$
1,712