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Fair Value Of Financial Instruments (Significant Unobservable Inputs) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2013
Jun. 29, 2012
Jul. 29, 2011
Jun. 30, 2013
Level 3 [Member]
Corporate Equity Securities-Auction Rate Preferred
Jun. 30, 2013
Level 3 [Member]
Corporate Obligations [Member]
Jun. 30, 2013
Level 3 [Member]
Warrants [Member]
Jun. 30, 2013
Level 3 [Member]
Minimum
Warrants [Member]
Jun. 30, 2013
Level 3 [Member]
Maximum
Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Securities owned, at fair value       $ 625 $ 120      
Fair value of warrants $ 24,197 $ 27,810 $ 24,136     $ 24,197    
Valuation Technique(s)       Analysis of comparable securities Discounted cash flow Binomial Model    
Unobservable Inputs           Derived Volatility    
Rate             51.00% 60.00%