Investment Securities (Summary Of Sale Proceeds And Realized Gains And Losses And Recognition Of OTTI) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Schedule of Investments [Line Items]
Net gain on sale of investment securities	$ 333	$ 2,537	$ 439	$ 2,537
Agency CMOs [Member]
Schedule of Investments [Line Items]
Net gain on sale of investment securities		893		893
Agency MBS [Member]
Schedule of Investments [Line Items]
Net gain on sale of investment securities	0	0	106	0
CMBS [Member]
Schedule of Investments [Line Items]
Net gain on sale of investment securities	333	1,235	333	1,235
Equity securities [Member]
Schedule of Investments [Line Items]
Net gain on sale of investment securities		$ 409		$ 409