Parent Company Condensed Financial Information (Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Noninterest income	$ 18,931	$ 13,643	$ 15,936
Subordinated debentures	2,233	4,813	6,010
Noninterest expenses	56,912	55,311	63,322
Total income (loss) before taxes and equity in undistributed income of subsidiaries	33,647	28,191	26,070
Taxes on income	12,617	10,756	9,883
Net income	21,030	17,435	16,187
Parent Company [Member]
Cash dividends from subsidiaries	18,045	19,625	70,175
Noninterest income	34	333	595
Investment income	1,337	243	340
Other operating income	3
Total income	19,419	20,201	71,110
Subordinated debentures	1,505	4,168	5,463
Noninterest expenses	1,317	1,808	3,187
Total expense	2,822	5,976	8,650
Total income (loss) before taxes and equity in undistributed income of subsidiaries	16,597	14,225	62,460
Taxes on income	(582)	(2,027)	(2,900)
Income (loss) before equity in undistributed income of subsidiaries	17,179	16,252	65,360
Equity in undistributed income (loss) of subsidiaries	3,851	1,183	(49,173)
Net income	$ 21,030	$ 17,435	$ 16,187