Acquisitions (Tables)
 3 Months Ended
Sep. 27, 2014
Business Combinations [Abstract]  
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
The total purchase price for Volterra was approximately $615 million and was comprised of:

 
 
(in thousands)
Cash consideration for 100% of outstanding common stock of Volterra at $23 per share
 
$
593,250

Cash consideration for vested options settlement
 
21,756

Total preliminary purchase price
 
$
615,006
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
The preliminary purchase price allocation as of the date of the acquisition is set forth in the table below and reflects various fair value estimates and analysis. These estimates were determined through established and generally accepted valuation techniques, including preliminary work performed by third-party valuation specialists, and are subject to change during the purchase price allocation period (up to one year from the acquisition date) as valuations are finalized.

 
Volterra
 
(in thousands)
Cash and cash equivalents and short-term investments
$
163,500

Accounts receivable
23,453

Inventories
33,339

Other tangible assets
17,151

Accrued expenses
(35,343
)
Income taxes payable
(23,241
)
Other liabilities assumed
(20,149
)
Net tangible assets
158,710

Amortizable intangible assets
226,900

In-process research and development ("IPR&D")
56,200

Goodwill
174,894

Substitution of stock-based compensation awards
(1,698
)
Total purchase price
$
615,006
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
The amortizable intangible assets are being amortized on a straight-line basis over their estimated useful lives as follows:

 
Volterra acquisition
 
Fair value
(in thousands)
 
Weighted average useful life (in years)
Intellectual property
$
192,500

 
4.9
Customer relationships
24,600

 
9.6
Trade name
6,400

 
4.0
Backlog
900

 
0.4
Patents
2,500

 
4.8
Total amortizable intangible assets
$
226,900