Other Income And Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
All other income and commissions:
Other service charges	$ 5,219	$ 3,869
ATM and interchange fees	4,212	3,241
Mortgage banking	2,431	1,886
Letter of credit fees	1,462	1,368
Dividend income	1,130	2,313
Electronic banking fees	1,030	1,271
Insurance commissions	789	624
Gain/(loss) on extinguishment of debt	0	(1)
Deferred compensation	(9,507)	5,474
Other	7,598	4,586
Total	14,364	24,631
All other expense:
Expense/(Credit) on unfunded commitments	9,230	396
Travel and entertainment	2,709	2,712
Other insurance and taxes	2,679	2,694
Non-service components of net periodic pension and post-retirement cost	2,508	432
Supplies	2,411	1,804
Customer relations	2,004	1,599
Employee training and dues	1,341	1,457
Miscellaneous loan costs	1,094	1,027
Tax credit investments	346	675
Litigation and regulatory matters	(13)	(13)
OREO	(184)	(366)
Other	9,075	6,888
Total	$ 33,226	$ 19,331