Other Income And Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
All other income and commissions:
Deferred compensation	$ 5,474	$ 451
Other service charges	3,869	4,123
ATM and interchange fees	3,241	3,267
Dividend income	2,313	2,249
Mortgage banking	1,886	2,546
Letter of credit fees	1,368	1,249
Electronic banking fees	1,271	1,204
Insurance commissions	624	757
Gain/(loss) on extinguishment of debt	(1)	0
Other	5,523	7,397
Total	25,568	23,243
All other expense:
Travel and entertainment	2,712	2,983
Other insurance and taxes	2,694	2,665
Supplies	1,804	1,836
Customer relations	1,599	1,063
Employee training and dues	1,457	1,779
Miscellaneous loan costs	1,027	1,142
Tax credit investments	675	1,137
Non-service components of net periodic pension and post-retirement cost	432	504
Litigation and regulatory matters	13	2,134
OREO	(366)	108
Other	7,739	19,981
Total	$ 19,786	$ 35,332