Investment Securities (Schedule Of Investments Within The Available For Sale Portfolio That Had Unrealized Losses) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 235,282	$ 0
Less than 12 months, Unrealized Losses	(1,367)	0
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Total Fair Value	235,282	0
Total Unrealized Losses	(1,367)	0
Government Agency Issued Collateralized Mortgage Obligations ("CMO") [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	235,282
Less than 12 months, Unrealized Losses	(1,367)
12 months or longer, Fair Value	0
12 months or longer, Unrealized Losses	0
Total Fair Value	235,282
Total Unrealized Losses	(1,367)
Equity [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value		0
Less than 12 months, Unrealized Losses		0
12 months or longer, Fair Value		0
12 months or longer, Unrealized Losses		0
Total Fair Value		0
Total Unrealized Losses		$ 0