Short-Term Borrowings (Narrative) (Detail) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 29, 2012
Short-term Debt [Line Items]
Minimum tangible net worth	$ 275,000,000
Unsecured Line Of Credit [Member]
Short-term Debt [Line Items]
Total amount available for borrowing	20,000,000	20,000,000
Letters Of Credit [Member]
Short-term Debt [Line Items]
Interest rate of letter of credit	0.50%	0.50%
Maximum amount available under letter of credit agreement	75,000,000
Outstanding amount of letters of credit	50,000,000	63,000,000
Letter of credit collateralized marketable securities	71,035,000	86,107,000
Unsecured Revolving Credit Facility
Short-term Debt [Line Items]
Available client securities under customer margin loans to be pledged	329,013,000	335,453,000
Pledged client securities under securities loan agreements	18,408,000	38,870,000
Banking [Member]
Short-term Debt [Line Items]
Federal funds rate plus basis points	0.005
Total amount available for borrowing	28,267,000	61,956,000
Southwest Securities | Uncommitted Lines Of Credit [Member]
Short-term Debt [Line Items]
Broker loan lines	375,000,000
Federal funds rate	0.07%	0.09%
Amount outstanding under credit agreements	86,500,000	22,500,000
Value of collateralized securities	120,568,000	80,125,000
Southwest Securities | Unsecured Line Of Credit [Member]
Short-term Debt [Line Items]
Broker loan lines	20,000,000	20,000,000
Amount of unsecured letters of credit outstanding	0	0
Southwest Securities | Committed Lines Of Credit [Member]
Short-term Debt [Line Items]
Agreement with an unaffiliated bank secured, uncommitted revolving credit	45,000,000
Commitment fee	0.00375
Federal funds rate plus basis points	0.0125
Minimum tangible net worth	150,000,000
Collateral of secured borrowings	68,605,000	71,277,000
Outstanding amount of letters of credit	$ 45,000,000	$ 45,000,000