Investment Securities (Summary Of Sale Proceeds Of Available For Sale Securities) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Investments [Line Items]
Proceeds	$ 7,740	$ 102,368	$ 44,261	$ 148,223
Net gain on sale of investment securities	269	810	708	3,347
Agency CMOs [Member]
Schedule of Investments [Line Items]
Proceeds	0	16,353	0	44,851
Net gain on sale of investment securities		4		897
Agency MBS [Member]
Schedule of Investments [Line Items]
Proceeds	0	86,015	11,771	86,015
Net gain on sale of investment securities	0	806	106	806
CMBS [Member]
Schedule of Investments [Line Items]
Proceeds	0	0	24,750	16,284
Net gain on sale of investment securities			333	1,235
Equity securities - financial institutions [Member]
Schedule of Investments [Line Items]
Proceeds	0	0	0	1,073
Net gain on sale of investment securities				409
Pooled trust preferred securities [Member]
Schedule of Investments [Line Items]
Proceeds	7,740	0	7,740	0
Net gain on sale of investment securities	$ 269	$ 0	$ 269	$ 0