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Balance Sheet Details
9 Months Ended
Mar. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance Sheet Details
Note 9. Balance Sheet Details
Accounts receivable allowances
As of March 30, 2019 and June 30, 2018, our accounts receivable allowance balance was $2.1 million and $2.6 million respectively.
Inventories
The components of inventories were as follows (in millions):
 
March 30, 2019

June 30, 2018
Finished goods
$
94.9

 
$
98.2

Work in process
121.3

 
34.5

Raw materials and purchased parts
56.0

 
20.9

Inventories (1) (2)
$
272.2

 
$
153.6


(1) The inventory balance at March 30, 2019 includes $44.5 million, net of amortization, related to the inventory step-up adjustment from the Oclaro acquisition.
(2) The inventory balance at March 30, 2019 does not include $5.1 million classified as assets held-for-sale. Refer to “Note 5. Business Combination”.
Prepayments and other current assets
The components of prepayments and other current assets were as follows (in millions):
 
March 30, 2019

June 30, 2018
Capitalized manufacturing overhead
$
14.1

 
$
20.5

Prepayments
28.8

 
19.5

Advances to contract manufacturers
8.3

 
14.0

Value added tax receivable
13.0

 
4.0

Vendor receivable
13.8

 
4.3

Other current assets 
29.0

 
2.7

Prepayments and other current assets
$
107.0

 
$
65.0



Property, plant and equipment, net
The components of property, plant and equipment, net were as follows (in millions):
 
March 30, 2019

June 30, 2018
Land
$
10.6

 
$
10.6

Buildings and improvement
72.9

 
55.1

Machinery and equipment (1)
502.7

 
463.6

Computer equipment and software
32.5

 
26.3

Furniture and fixtures
4.1

 
2.2

Leasehold improvements
31.4

 
25.8

Construction in progress
59.5

 
52.6

 
713.7

 
636.2

Less: Accumulated depreciation (1)
(323.1
)
 
(329.3
)
Property, plant and equipment, net (2)
$
390.6

 
$
306.9


(1) In fiscal 2018, we started leasing equipment from a vendor and have accounted for the transaction as a capital lease. Included in the table above are our capital lease assets of $16.4 million, gross and $9.8 million in accumulated depreciation as of March 30, 2019, and $15.6 million, gross and $5.2 million in accumulated depreciation as of June 30, 2018.
During the three and nine months ended March 30, 2019, we recorded depreciation expense of $29.0 million and $74.7 million, respectively. During the three and nine months ended March 31, 2018, we recorded depreciation expense of $18.4 million and $53.3 million, respectively.
Our construction in progress primarily includes machinery and equipment that were purchased for the set-up costs at our facility in Thailand and ramp new product lines. We expect to place these assets in service in the next 12 months.
(2) The property, plant and equipment balance at March 30, 2019 does not include $31.4 million classified as assets held-for-sale, which includes $4.9 million related exit of our Datacom modules and $26.5 million related to CIG agreement. Refer to “Note 15. Impairment” and “Note 5. Business Combination”.

Other current liabilities
The components of other current liabilities were as follows (in millions):
 
March 30, 2019

June 30, 2018
Warranty accrual (1)
$
9.8

 
$
6.6

Restructuring accrual and related charges (2)
18.0

 
1.9

Deferred revenue and customer deposits
4.2


2.8

Capital lease obligation (3)
0.8

 
7.3

Income tax payable (4)
8.5

 
0.7

Other current liabilities
5.4

 
2.8

Other current liabilities (5)
$
46.7

 
$
22.1


(1) Refer to “Note 18. Commitments and Contingencies.”
(2) Refer to “Note 14. Restructuring and Related Charges.”
(3) In addition to the $0.8 million of capital lease obligations recorded within other current liabilities, we also recorded $2.3 million within accounts payable and $0.1 million within other non-current liabilities in the condensed consolidated balance sheet as of March 30, 2019. Refer to “Note 18. Commitments and Contingencies.”
(4) Refer to “Note 16. Income Taxes.”
(5) Other current liabilities balance at March 30, 2019 does not include liabilities classified as held-for-sale. Refer to “Note 5. Business Combination”.
Other non-current liabilities
The components of other non-current liabilities were as follows (in millions):
 
March 30, 2019

June 30, 2018
Asset retirement obligation
$
5.4

 
$
2.7

Pension and related accrual (1)
6.4

 
3.5

Deferred rent
2.4

 
2.6

Unrecognized tax benefit
6.7

 
6.1

Capital lease obligation
0.1

 
0.4

Others
0.4

 
3.4

Other non-current liabilities (2)
$
21.4

 
$
18.7


(1) In connection with our acquisition of Oclaro, we assumed a defined benefit plan, which covers certain Japan employees. As of March 30, 2019, we recorded $2.9 million in other non-current liabilities in our condensed consolidated balance sheet to account for the projected benefit obligations.
(2) Other non-current liabilities balance at March 30, 2019 does not include non-current liabilities classified as held-for-sale. Refer to “Note 5. Business Combination”.