Investments, Available-for-sale Securities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Total securities at fair value	$ 31,502	$ 28,421
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	11,631	11,631
Gross Unrealized Gain	14,870	5,739
Gross Unrealized Loss	0	(5)
Net Unrealized Gain	14,870	5,734
Total securities at fair value	26,501	17,365
Short-Term Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	4,999	11,007
Gross Unrealized Gain	2	49
Gross Unrealized Loss	0	0
Net Unrealized Gain	2	49
Total securities at fair value	5,001	11,056
Short-Term Investment [Member] | Corporate Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs		0
Gross Unrealized Gain		40
Gross Unrealized Loss		0
Net Unrealized Gain		40
Total securities at fair value		40
Short-Term Investment [Member] | U.S. Government and Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	4,999	11,007
Gross Unrealized Gain	2	9
Gross Unrealized Loss	0	0
Net Unrealized Gain	2	9
Total securities at fair value	$ 5,001	$ 11,016