Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		$ 3,743,425	$ 4,453,665
Financing Receivable, Originated, Year 2		4,522,989	3,294,886
Financing Receivable, Originated, Year 3		2,982,784	2,107,063
Financing Receivable, Originated, Year 4		1,756,064	1,734,561
Financing Receivable, Originated, Year 5		1,234,871	1,157,972
Financing Receivable, Originated, More Than Five Years		3,094,093	2,992,242
Financing Receivable, Revolving		6,543,149	6,790,248
Financing Receivable, Revolving, Converted to Term Loan		27,593	26,513
Total		23,904,968	22,557,150
Financing Receivable, Allowance for Credit Loss, Writeoff		27,316	28,746	$ 51,351
Commercial [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		2,698,113	2,655,782
Financing Receivable, Originated, Year 2		2,026,636	1,566,129
Financing Receivable, Originated, Year 3		1,293,089	994,261
Financing Receivable, Originated, Year 4		846,923	838,006
Financing Receivable, Originated, Year 5		576,627	779,311
Financing Receivable, Originated, More Than Five Years		1,839,613	1,657,429
Financing Receivable, Revolving		5,519,976	5,718,433
Financing Receivable, Revolving, Converted to Term Loan		2,792	3,148
Total		14,803,769	14,212,499
Financing Receivable, Allowance for Credit Loss, Writeoff		12,898	22,382	43,956
Commercial [Member] | Healthcare [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		650,768	932,097
Financing Receivable, Originated, Year 2		897,730	604,886
Financing Receivable, Originated, Year 3		609,244	476,854
Financing Receivable, Originated, Year 4		467,993	450,755
Financing Receivable, Originated, Year 5		355,026	471,362
Financing Receivable, Originated, More Than Five Years		880,099	659,507
Financing Receivable, Revolving		282,358	249,536
Financing Receivable, Revolving, Converted to Term Loan		15	20
Total		4,143,233	3,845,017
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		2,500
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Revolving, Writeoff		0
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Writeoff		2,500
Commercial [Member] | Energy [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		190,122	157,745
Financing Receivable, Originated, Year 2		100,006	76,951
Financing Receivable, Originated, Year 3		43,769	30,284
Financing Receivable, Originated, Year 4		7,876	13,447
Financing Receivable, Originated, Year 5		9,562	6,377
Financing Receivable, Originated, More Than Five Years		11,682	5,822
Financing Receivable, Revolving		3,074,084	3,134,164
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		3,437,101	3,424,790
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Revolving, Writeoff		0
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Writeoff		0
Commercial [Member] | Services [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		900,090	822,287
Financing Receivable, Originated, Year 2		541,573	507,219
Financing Receivable, Originated, Year 3		405,205	287,523
Financing Receivable, Originated, Year 4		230,823	196,711
Financing Receivable, Originated, Year 5		110,618	157,673
Financing Receivable, Originated, More Than Five Years		651,745	702,823
Financing Receivable, Revolving		735,561	756,524
Financing Receivable, Revolving, Converted to Term Loan		608	761
Total		3,576,223	3,431,521
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		3,060
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Revolving, Writeoff		2,642
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Writeoff		5,702
Commercial [Member] | General business [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		957,133	743,653
Financing Receivable, Originated, Year 2		487,327	377,073
Financing Receivable, Originated, Year 3		234,871	199,600
Financing Receivable, Originated, Year 4		140,231	177,093
Financing Receivable, Originated, Year 5		101,421	143,899
Financing Receivable, Originated, More Than Five Years		296,087	289,277
Financing Receivable, Revolving		1,427,973	1,578,209
Financing Receivable, Revolving, Converted to Term Loan		2,169	2,367
Total		3,647,212	3,511,171
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		4,598
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		2
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		48
Financing Receivable, Revolving, Writeoff		10
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		38
Financing Receivable, Allowance for Credit Loss, Writeoff		4,696
Commercial real estate [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		399,883	1,188,483
Financing Receivable, Originated, Year 2		1,942,389	1,158,002
Financing Receivable, Originated, Year 3		1,194,762	552,616
Financing Receivable, Originated, Year 4		416,647	648,561
Financing Receivable, Originated, Year 5		520,725	247,625
Financing Receivable, Originated, More Than Five Years		727,146	649,874
Financing Receivable, Revolving		136,095	161,616
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		5,337,647	4,606,777
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		8,446
Financing Receivable, Revolving, Writeoff		0
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Writeoff		8,446	269	2,485
Loans to individuals [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		645,429	609,400
Financing Receivable, Originated, Year 2		553,964	570,755
Financing Receivable, Originated, Year 3		494,933	560,186
Financing Receivable, Originated, Year 4		492,494	247,994
Financing Receivable, Originated, Year 5		137,519	131,036
Financing Receivable, Originated, More Than Five Years		527,334	684,939
Financing Receivable, Revolving		887,078	910,199
Financing Receivable, Revolving, Converted to Term Loan		24,801	23,365
Total		3,763,552	3,737,874
Financing Receivable, Allowance for Credit Loss, Writeoff		5,972	6,095	$ 4,910
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		426,325	354,529
Financing Receivable, Originated, Year 2		322,442	374,927
Financing Receivable, Originated, Year 3		343,295	395,948
Financing Receivable, Originated, Year 4		351,647	63,504
Financing Receivable, Originated, Year 5		55,200	42,571
Financing Receivable, Originated, More Than Five Years		255,920	281,290
Financing Receivable, Revolving		381,158	354,986
Financing Receivable, Revolving, Converted to Term Loan		24,653	23,029
Total		2,160,640	1,890,784
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		51
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		4
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff		17
Financing Receivable, Revolving, Writeoff		0
Financing Receivable, Revolving, Converted to Term Loan, Writeoff		1
Financing Receivable, Allowance for Credit Loss, Writeoff		73
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		633	289
Financing Receivable, Originated, Year 2		1,788	2,254
Financing Receivable, Originated, Year 3		2,220	9,299
Financing Receivable, Originated, Year 4		4,577	12,182
Financing Receivable, Originated, Year 5		6,816	19,563
Financing Receivable, Originated, More Than Five Years		133,773	202,353
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		149,807	245,940
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		218,471	254,582
Financing Receivable, Originated, Year 2		229,734	193,574
Financing Receivable, Originated, Year 3		149,418	154,939
Financing Receivable, Originated, Year 4		136,270	172,308
Financing Receivable, Originated, Year 5		75,503	68,902
Financing Receivable, Originated, More Than Five Years		137,641	201,296
Financing Receivable, Revolving		505,920	555,213
Financing Receivable, Revolving, Converted to Term Loan		148	336
Total		1,453,105	1,601,150
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	[1]	5,636
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	[1]	82
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	[1]	96
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	[1]	43
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	[1]	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	[1]	10
Financing Receivable, Revolving, Writeoff	[1]	6
Financing Receivable, Revolving, Converted to Term Loan, Writeoff	[1]	26
Financing Receivable, Allowance for Credit Loss, Writeoff	[1]	5,899
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		650,768	932,097
Financing Receivable, Originated, Year 2		895,602	604,886
Financing Receivable, Originated, Year 3		590,736	476,854
Financing Receivable, Originated, Year 4		409,001	404,204
Financing Receivable, Originated, Year 5		331,897	464,989
Financing Receivable, Originated, More Than Five Years		809,858	618,163
Financing Receivable, Revolving		281,378	245,898
Financing Receivable, Revolving, Converted to Term Loan		15	20
Total		3,969,255	3,747,111
Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	0
Financing Receivable, Originated, Year 4		21,791	20,071
Financing Receivable, Originated, Year 5		0	0
Financing Receivable, Originated, More Than Five Years		31,235	18,859
Financing Receivable, Revolving		5	4
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		53,031	38,934
Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		2,128	0
Financing Receivable, Originated, Year 3		18,508	0
Financing Receivable, Originated, Year 4		6,911	0
Financing Receivable, Originated, Year 5		0	0
Financing Receivable, Originated, More Than Five Years		10,896	14,304
Financing Receivable, Revolving		975	3,634
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		39,418	17,938
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		190,122	157,745
Financing Receivable, Originated, Year 2		100,006	76,951
Financing Receivable, Originated, Year 3		43,769	30,284
Financing Receivable, Originated, Year 4		7,876	12,783
Financing Receivable, Originated, Year 5		9,562	5,992
Financing Receivable, Originated, More Than Five Years		11,583	4,980
Financing Receivable, Revolving		3,025,590	3,104,906
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		3,388,508	3,393,641
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0
Financing Receivable, Originated, Year 2		0
Financing Receivable, Originated, Year 3		0
Financing Receivable, Originated, Year 4		0
Financing Receivable, Originated, Year 5		0
Financing Receivable, Originated, More Than Five Years		0
Financing Receivable, Revolving		13,950
Financing Receivable, Revolving, Converted to Term Loan		0
Total		13,950
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	0
Financing Receivable, Originated, Year 4		0	664
Financing Receivable, Originated, Year 5		0	385
Financing Receivable, Originated, More Than Five Years		0	683
Financing Receivable, Revolving		16,800	28,018
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		16,800	29,750
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		900,090	821,785
Financing Receivable, Originated, Year 2		526,776	496,510
Financing Receivable, Originated, Year 3		401,872	286,085
Financing Receivable, Originated, Year 4		228,818	193,481
Financing Receivable, Originated, Year 5		106,112	156,736
Financing Receivable, Originated, More Than Five Years		643,477	696,300
Financing Receivable, Revolving		730,729	722,371
Financing Receivable, Revolving, Converted to Term Loan		595	639
Total		3,538,469	3,373,907
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	502
Financing Receivable, Originated, Year 2		1,085	5,139
Financing Receivable, Originated, Year 3		1,520	989
Financing Receivable, Originated, Year 4		1,341	771
Financing Receivable, Originated, Year 5		534	894
Financing Receivable, Originated, More Than Five Years		4,522	1,345
Financing Receivable, Revolving		81	8,668
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		9,083	18,308
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		13,712	0
Financing Receivable, Originated, Year 3		178	0
Financing Receivable, Originated, Year 4		326	2,459
Financing Receivable, Originated, Year 5		3,972	43
Financing Receivable, Originated, More Than Five Years		3,746	2,789
Financing Receivable, Revolving		3,108	17,665
Financing Receivable, Revolving, Converted to Term Loan		13	122
Total		25,055	23,078
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		942,468	725,894
Financing Receivable, Originated, Year 2		436,832	361,839
Financing Receivable, Originated, Year 3		224,735	198,274
Financing Receivable, Originated, Year 4		138,951	172,878
Financing Receivable, Originated, Year 5		101,100	139,140
Financing Receivable, Originated, More Than Five Years		287,744	283,694
Financing Receivable, Revolving		1,389,128	1,570,536
Financing Receivable, Revolving, Converted to Term Loan		2,164	2,329
Total		3,523,122	3,454,584
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		10,264	17,759
Financing Receivable, Originated, Year 2		16,167	13,065
Financing Receivable, Originated, Year 3		8,420	208
Financing Receivable, Originated, Year 4		1,253	71
Financing Receivable, Originated, Year 5		321	7
Financing Receivable, Originated, More Than Five Years		8,295	2,291
Financing Receivable, Revolving		897	7,094
Financing Receivable, Revolving, Converted to Term Loan		0	26
Total		45,617	40,521
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		4,401	0
Financing Receivable, Originated, Year 2		33,194	2,169
Financing Receivable, Originated, Year 3		1,716	66
Financing Receivable, Originated, Year 4		27	4,130
Financing Receivable, Originated, Year 5		0	4,680
Financing Receivable, Originated, More Than Five Years		0	3,287
Financing Receivable, Revolving		31,992	94
Financing Receivable, Revolving, Converted to Term Loan		0	4
Total		71,330	14,430
Performing [Member] | Commercial real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		396,891	1,188,483
Financing Receivable, Originated, Year 2		1,941,913	1,158,002
Financing Receivable, Originated, Year 3		1,194,759	552,616
Financing Receivable, Originated, Year 4		416,647	641,102
Financing Receivable, Originated, Year 5		513,555	247,625
Financing Receivable, Originated, More Than Five Years		705,092	633,304
Financing Receivable, Revolving		136,095	161,616
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		5,304,952	4,582,748
Performing [Member] | Commercial real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0
Financing Receivable, Originated, Year 2		476
Financing Receivable, Originated, Year 3		0
Financing Receivable, Originated, Year 4		0
Financing Receivable, Originated, Year 5		0
Financing Receivable, Originated, More Than Five Years		19,171
Financing Receivable, Revolving		0
Financing Receivable, Revolving, Converted to Term Loan		0
Total		19,647
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		2,992	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		3	0
Financing Receivable, Originated, Year 4		0	7,459
Financing Receivable, Originated, Year 5		0	0
Financing Receivable, Originated, More Than Five Years		2,733	0
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		5,728	7,459
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		426,089	354,497
Financing Receivable, Originated, Year 2		320,733	373,190
Financing Receivable, Originated, Year 3		342,927	393,002
Financing Receivable, Originated, Year 4		349,742	63,142
Financing Receivable, Originated, Year 5		54,801	40,525
Financing Receivable, Originated, More Than Five Years		243,356	260,625
Financing Receivable, Revolving		375,739	352,126
Financing Receivable, Revolving, Converted to Term Loan		23,895	22,176
Total		2,137,282	1,859,283
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		157	0
Financing Receivable, Originated, Year 2		140	81
Financing Receivable, Originated, Year 3		131	42
Financing Receivable, Originated, Year 4		1,361	0
Financing Receivable, Originated, Year 5		18	142
Financing Receivable, Originated, More Than Five Years		134	388
Financing Receivable, Revolving		2,982	527
Financing Receivable, Revolving, Converted to Term Loan		93	87
Total		5,016	1,267
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		150	0
Financing Receivable, Originated, Year 3		0	187
Financing Receivable, Originated, Year 4		0	0
Financing Receivable, Originated, Year 5		37	0
Financing Receivable, Originated, More Than Five Years		49	138
Financing Receivable, Revolving		50	117
Financing Receivable, Revolving, Converted to Term Loan		0	1
Total		286	443
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		633	289
Financing Receivable, Originated, Year 2		1,788	2,254
Financing Receivable, Originated, Year 3		2,220	9,000
Financing Receivable, Originated, Year 4		4,297	10,722
Financing Receivable, Originated, Year 5		6,441	17,244
Financing Receivable, Originated, More Than Five Years		124,719	191,426
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		140,098	230,935
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		218,401	254,497
Financing Receivable, Originated, Year 2		229,580	193,095
Financing Receivable, Originated, Year 3		149,291	154,887
Financing Receivable, Originated, Year 4		136,215	172,114
Financing Receivable, Originated, Year 5		75,348	68,871
Financing Receivable, Originated, More Than Five Years		137,629	201,278
Financing Receivable, Revolving		503,841	549,187
Financing Receivable, Revolving, Converted to Term Loan		145	332
Total		1,450,450	1,594,261
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		66	47
Financing Receivable, Originated, Year 2		39	28
Financing Receivable, Originated, Year 3		106	40
Financing Receivable, Originated, Year 4		30	12
Financing Receivable, Originated, Year 5		8	17
Financing Receivable, Originated, More Than Five Years		0	0
Financing Receivable, Revolving		1,918	6,003
Financing Receivable, Revolving, Converted to Term Loan		3	4
Total		2,170	6,151
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		64	444
Financing Receivable, Originated, Year 3		12	0
Financing Receivable, Originated, Year 4		9	160
Financing Receivable, Originated, Year 5		144	0
Financing Receivable, Originated, More Than Five Years		0	0
Financing Receivable, Revolving		3	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		232	604
Nonaccrual [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	0
Financing Receivable, Originated, Year 4		30,290	26,480
Financing Receivable, Originated, Year 5		23,129	6,373
Financing Receivable, Originated, More Than Five Years		28,110	8,181
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		81,529	41,034
Nonaccrual [Member] | Commercial [Member] | Energy [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	0
Financing Receivable, Originated, Year 4		0	0
Financing Receivable, Originated, Year 5		0	0
Financing Receivable, Originated, More Than Five Years		99	159
Financing Receivable, Revolving		17,744	1,240
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		17,843	1,399
Nonaccrual [Member] | Commercial [Member] | Services [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	5,570
Financing Receivable, Originated, Year 3		1,635	449
Financing Receivable, Originated, Year 4		338	0
Financing Receivable, Originated, Year 5		0	0
Financing Receivable, Originated, More Than Five Years		0	2,389
Financing Receivable, Revolving		1,643	7,820
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		3,616	16,228
Nonaccrual [Member] | Commercial [Member] | General business [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		1,134	0
Financing Receivable, Originated, Year 3		0	1,052
Financing Receivable, Originated, Year 4		0	14
Financing Receivable, Originated, Year 5		0	72
Financing Receivable, Originated, More Than Five Years		48	5
Financing Receivable, Revolving		5,956	485
Financing Receivable, Revolving, Converted to Term Loan		5	8
Total		7,143	1,636
Nonaccrual [Member] | Commercial real estate [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	0
Financing Receivable, Originated, Year 4		0	0
Financing Receivable, Originated, Year 5		7,170	0
Financing Receivable, Originated, More Than Five Years		150	16,570
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		7,320	16,570
Nonaccrual [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		79	32
Financing Receivable, Originated, Year 2		1,419	1,656
Financing Receivable, Originated, Year 3		237	2,717
Financing Receivable, Originated, Year 4		544	362
Financing Receivable, Originated, Year 5		344	1,904
Financing Receivable, Originated, More Than Five Years		12,381	20,139
Financing Receivable, Revolving		2,387	2,216
Financing Receivable, Revolving, Converted to Term Loan		665	765
Total		18,056	29,791
Nonaccrual [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		0	0
Financing Receivable, Originated, Year 2		0	0
Financing Receivable, Originated, Year 3		0	299
Financing Receivable, Originated, Year 4		280	1,460
Financing Receivable, Originated, Year 5		375	2,319
Financing Receivable, Originated, More Than Five Years		9,054	10,927
Financing Receivable, Revolving		0	0
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		9,709	15,005
Nonaccrual [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One		4	38
Financing Receivable, Originated, Year 2		51	7
Financing Receivable, Originated, Year 3		9	12
Financing Receivable, Originated, Year 4		16	22
Financing Receivable, Originated, Year 5		3	14
Financing Receivable, Originated, More Than Five Years		12	18
Financing Receivable, Revolving		158	23
Financing Receivable, Revolving, Converted to Term Loan		0	0
Total		$ 253	$ 134

[1] Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.