Interest Income And Interest Expense (Schedule Of Components Of Interest Income And Expense) (Detail) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 29, 2012	Jun. 24, 2011
Long-term debt	$ 12,518,000	$ 11,018,000
Interest expense	46,461,000	60,318,000	47,755,000
Total net interest revenue	50,889,000	61,802,000	91,112,000
Interest Income [Member]
Customer margin accounts	8,236,000	8,604,000	8,123,000
Assets segregated for regulatory purposes	121,000	197,000	348,000
Stock borrowed	36,074,000	52,620,000	48,688,000
Loans	37,644,000	48,819,000	69,881,000
Bank investments	6,968,000	3,137,000	1,700,000
Other	8,307,000	8,743,000	10,127,000
Interest and Dividend Income, Operating, Total	97,350,000	122,120,000	138,867,000
Interest Expense [Member]
Customer funds on deposit	232,000	342,000	404,000
Stock loaned	27,084,000	41,048,000	37,370,000
Deposits	468,000	808,000	1,653,000
Federal Home Loan Bank	2,721,000	3,920,000	4,781,000
Long-term debt	12,518,000	11,018,000
Other	3,438,000	3,182,000	3,547,000
Interest expense	$ 46,461,000	$ 60,318,000	$ 47,755,000