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Investments (Tables)
 6 Months Ended
Dec. 28, 2014
Investments, Debt and Equity Securities [Abstract]  
Summary of Short-term Investments by Type
The following tables summarize short-term investments (in thousands):
 
 
December 28, 2014
 
 
Amortized    
Cost
 
Gross Unrealized    
Gains
 
Gross
Unrealized    
Losses
 
Estimated Fair 
Value
Municipal bonds
 

$183,806

 

$1,504

 

($154
)
 

$185,156

Corporate bonds
 
160,346

 
1,537

 
(377
)
 
161,506

U.S. agency securities
 
—

 
—

 
—

 
—

Non-U.S. certificates of deposit
 
283,303

 
—

 
—

 
283,303

Non-U.S. government securities
 
—

 
—

 
—

 
—

Total short-term investments
 

$627,455

 

$3,041

 

($531
)
 

$629,965

 
 
 
 
 
 
 
 
 
 
 
June 29, 2014
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated Fair
Value
Municipal bonds
 

$291,869

 

$2,323

 

($12
)
 

$294,180

Corporate bonds
 
200,177

 
2,283

 
(114
)
 
202,346

U.S. agency securities
 
18,994

 
141

 
—

 
19,135

Non-U.S. certificates of deposit
 
352,928

 
—

 
—

 
352,928

Non-U.S. government securities
 
7,025

 
28

 
—

 
7,053

Total short-term investments
 

$870,993

 

$4,775

 

($126
)
 

$875,642
Summary of Gross Unrealized Losses and Estimated Fair Value of Short-term Investments, Aggregated by Investment Type and Length of Time
The following tables present the gross unrealized losses and estimated fair value of the Company's short-term investments, aggregated by investment type and the length of time that individual securities have been in a continuous unrealized loss position (in thousands, except numbers of securities):
 
 
December 28, 2014
 
 
Less than 12 Months
 
Greater than 12 Months
 
Total
 
 
Fair Value
 
Unrealized Loss
 
Fair Value
 
Unrealized Loss
 
Fair Value
 
Unrealized Loss
Municipal bonds
 

$35,417

 

($154
)
 

$—

 

$—

 

$35,417

 

($154
)
Corporate bonds
 
58,229

 
(341
)
 
2,212

 
(36
)
 
60,441

 
(377
)
Total
 

$93,646

 

($495
)
 

$2,212

 

($36
)
 

$95,858

 

($531
)
Number of securities with an unrealized loss
 
 
 
47

 
 
 
1

 
 
 
48

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
June 29, 2014
 
 
Less than 12 Months
 
Greater than 12 Months
 
Total
 
 
Fair Value
 
Unrealized Loss
 
Fair Value
 
Unrealized Loss
 
Fair Value
 
Unrealized Loss
Municipal bonds
 

$7,906

 

($8
)
 

$1,520

 

($4
)
 

$9,426

 

($12
)
Corporate bonds
 
15,696

 
(31
)
 
13,049

 
(83
)
 
28,745

 
(114
)
Total
 

$23,602

 

($39
)
 

$14,569

 

($87
)
 

$38,171

 

($126
)
Number of securities with an unrealized loss
 
 
 
13

 
 
 
7

 
 
 
20
Contractual Maturities of Short-term Investments by Type
The contractual maturities of short-term investments as of December 28, 2014 were as follows (in thousands):
 
 
Within One    
Year
 
After One,
Within Five    
Years
 
After Five,
Within Ten    
Years
 
After Ten    
Years
 
Total
Municipal bonds

$23,593

 

$127,148

 

$34,415

 

$—

 

$185,156

Corporate bonds
22,435

 
106,525

 
32,546

 
—

 
161,506

Non-U.S. certificates of deposit
283,303

 
—

 
—

 
—

 
283,303

Total short-term investments

$329,331

 

$233,673

 

$66,961

 

$—

 

$629,965