Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		$ 3,279,975	$ 3,743,425
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		2,873,863	4,522,989
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		4,270,179	2,982,784
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		2,359,227	1,756,064
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		1,369,849	1,234,871
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		2,993,779	3,094,093
Financing Receivable, Excluding Accrued Interest, Revolving		6,938,929	6,543,149
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		28,923	27,593
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		24,114,724	23,904,968
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		18,835	27,316	$ 28,746
Commercial [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		2,067,074	2,698,113
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,866,895	2,026,636
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		1,751,617	1,293,089
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		1,095,279	846,923
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		709,743	576,627
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		1,653,117	1,839,613
Financing Receivable, Excluding Accrued Interest, Revolving		5,883,625	5,519,976
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		2,786	2,792
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		15,030,136	14,803,769
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		11,763	12,898	22,382
Commercial [Member] | Healthcare [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		539,305	650,768
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		597,283	897,730
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		966,286	609,244
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		497,918	467,993
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		395,743	355,026
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		719,305	880,099
Financing Receivable, Excluding Accrued Interest, Revolving		251,683	282,358
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		10	15
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,967,533	4,143,233
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0	2,500
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		7,240	0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		7,240	2,500
Commercial [Member] | Energy [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		148,972	190,122
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		46,094	100,006
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		39,050	43,769
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		2,621	7,876
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		6,488	9,562
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		17,038	11,682
Financing Receivable, Excluding Accrued Interest, Revolving		2,994,461	3,074,084
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,254,724	3,437,101
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		226
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		226
Commercial [Member] | Services [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		629,978	900,090
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		629,968	541,573
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		431,168	405,205
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		406,506	230,823
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		188,541	110,618
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		590,321	651,745
Financing Receivable, Excluding Accrued Interest, Revolving		765,942	735,561
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		779	608
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,643,203	3,576,223
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0	3,060
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		22	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		80	0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		9	2,642
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		111	5,702
Commercial [Member] | General business [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		748,819	957,133
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		593,550	487,327
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		315,113	234,871
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		188,234	140,231
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		118,971	101,421
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		326,453	296,087
Financing Receivable, Excluding Accrued Interest, Revolving		1,871,539	1,427,973
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		1,997	2,169
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,164,676	3,647,212
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		27	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		1,465	4,598
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0	2
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		166	48
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		2,425	10
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		103	38
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,186	4,696
Commercial real estate [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		436,206	399,883
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		512,927	1,942,389
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		2,056,446	1,194,762
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		825,292	416,647
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		233,619	520,725
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		852,655	727,146
Financing Receivable, Excluding Accrued Interest, Revolving		141,307	136,095
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		5,058,452	5,337,647
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		1,455	8,446
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,455	8,446	269
Loans to individuals [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		776,695	645,429
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		494,041	553,964
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		462,116	494,933
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		438,656	492,494
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		426,487	137,519
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		488,007	527,334
Financing Receivable, Excluding Accrued Interest, Revolving		913,997	887,078
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		26,137	24,801
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,026,136	3,763,552
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		5,617	5,972	$ 6,095
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		530,431	426,325
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		340,112	322,442
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		288,166	343,295
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		319,676	351,647
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		315,397	55,200
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		217,829	255,920
Financing Receivable, Excluding Accrued Interest, Revolving		401,829	381,158
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		23,518	24,653
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,436,958	2,160,640
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff		43	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff		0	51
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff		0	4
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff		18	17
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff		10	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff		0	1
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		71	73
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		462	633
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		4,337	1,788
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		6,618	2,220
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		2,432	4,577
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		3,786	6,816
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		119,014	133,773
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		136,649	149,807
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		245,802	218,471
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		149,592	229,734
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		167,332	149,418
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		116,548	136,270
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		107,304	75,503
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		151,164	137,641
Financing Receivable, Excluding Accrued Interest, Revolving		512,168	505,920
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		2,619	148
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,452,529	1,453,105
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	[1]	5,269	5,636
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	[1]	69	82
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	[1]	101	96
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	[1]	52	43
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	[1]	9	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	[1]	0	10
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	[1]	26	6
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	[1]	20	26
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	[1]	5,546	5,899
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		539,305	650,768
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		544,103	895,602
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		896,042	590,736
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		481,816	409,001
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		344,609	331,897
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		644,441	809,858
Financing Receivable, Excluding Accrued Interest, Revolving		249,793	281,378
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		10	15
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,700,119	3,969,255
Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		15,000	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		64,895	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		110	21,791
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		32,555	31,235
Financing Receivable, Excluding Accrued Interest, Revolving		255	5
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		112,815	53,031
Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		38,180	2,128
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		5,253	18,508
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		15,529	6,911
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		51,134	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		29,151	10,896
Financing Receivable, Excluding Accrued Interest, Revolving		1,635	975
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		140,882	39,418
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		148,972	190,122
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		46,094	100,006
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		39,050	43,769
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		2,621	7,876
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		6,488	9,562
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		16,989	11,583
Financing Receivable, Excluding Accrued Interest, Revolving		2,985,161	3,025,590
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,245,375	3,388,508
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year			0
Financing Receivable, Excluding Accrued Interest, Revolving			13,950
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan			0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss			13,950
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Revolving		9,300	16,800
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		9,300	16,800
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		629,978	900,090
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		625,969	526,776
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		422,015	401,872
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		404,949	228,818
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		187,324	106,112
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		570,775	643,477
Financing Receivable, Excluding Accrued Interest, Revolving		745,853	730,729
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		379	595
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,587,242	3,538,469
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		3,324	1,085
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		123	1,520
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		1,537	1,341
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	534
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		11,796	4,522
Financing Receivable, Excluding Accrued Interest, Revolving		17,923	81
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		34,703	9,083
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		675	13,712
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		9,030	178
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		20	326
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		1,217	3,972
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		7,750	3,746
Financing Receivable, Excluding Accrued Interest, Revolving		1,399	3,108
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		400	13
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		20,491	25,055
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		740,440	942,468
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		571,897	436,832
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		267,528	224,735
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		176,468	138,951
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		117,755	101,100
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		319,986	287,744
Financing Receivable, Excluding Accrued Interest, Revolving		1,862,643	1,389,128
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		1,938	2,164
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,058,655	3,523,122
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		4,399	10,264
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		5,749	16,167
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		4,285	8,420
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		7,002	1,253
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		224	321
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		1,736	8,295
Financing Receivable, Excluding Accrued Interest, Revolving		3,037	897
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		26,432	45,617
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		3,980	4,401
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		15,872	33,194
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		43,300	1,716
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		4,764	27
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		992	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		4,708	0
Financing Receivable, Excluding Accrued Interest, Revolving		5,859	31,992
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		79,475	71,330
Performing [Member] | Commercial real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		436,206	396,891
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		512,614	1,941,913
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		2,004,558	1,194,759
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		793,161	416,647
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		233,619	513,555
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		810,497	705,092
Financing Receivable, Excluding Accrued Interest, Revolving		141,307	136,095
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,931,962	5,304,952
Performing [Member] | Commercial real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		313	476
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		14,907	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		32,131	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		0	19,171
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		47,351	19,647
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	2,992
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		36,981	3
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		32,253	2,733
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		69,234	5,728
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		530,186	426,089
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		338,187	320,733
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		286,865	342,927
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		318,935	349,742
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		314,814	54,801
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		210,251	243,356
Financing Receivable, Excluding Accrued Interest, Revolving		395,943	375,739
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		22,929	23,895
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,418,110	2,137,282
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	157
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		167	140
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		148	131
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		219	1,361
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	18
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		113	134
Financing Receivable, Excluding Accrued Interest, Revolving		1,767	2,982
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	93
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,414	5,016
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	150
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		163	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	37
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		45	49
Financing Receivable, Excluding Accrued Interest, Revolving		898	50
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		67	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,173	286
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		462	633
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		4,337	1,788
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		6,618	2,220
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		2,432	4,297
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		3,506	6,441
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		112,491	124,719
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		129,846	140,098
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		245,737	218,401
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		149,572	229,580
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		167,272	149,291
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		115,710	136,215
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		107,291	75,348
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		151,030	137,629
Financing Receivable, Excluding Accrued Interest, Revolving		510,147	503,841
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		2,619	145
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,449,378	1,450,450
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		18	66
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		17	39
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		30	106
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		825	30
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		8	8
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Revolving		8	1,918
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	3
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		906	2,170
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		16	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	64
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	12
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	9
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		1	144
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		129	0
Financing Receivable, Excluding Accrued Interest, Revolving		1,990	3
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,136	232
Nonaccrual [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		96	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		463	30,290
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	23,129
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		13,158	28,110
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		13,717	81,529
Nonaccrual [Member] | Commercial [Member] | Energy [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		49	99
Financing Receivable, Excluding Accrued Interest, Revolving		0	17,744
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		49	17,843
Nonaccrual [Member] | Commercial [Member] | Services [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	1,635
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	338
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Revolving		767	1,643
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		767	3,616
Nonaccrual [Member] | Commercial [Member] | General business [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		32	1,134
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		23	48
Financing Receivable, Excluding Accrued Interest, Revolving		0	5,956
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		59	5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		114	7,143
Nonaccrual [Member] | Commercial real estate [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		0	7,170
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		9,905	150
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		9,905	7,320
Nonaccrual [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		245	79
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,758	1,419
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		990	237
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		522	544
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		583	344
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		7,420	12,381
Financing Receivable, Excluding Accrued Interest, Revolving		3,221	2,387
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		522	665
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		15,261	18,056
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		0	280
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		280	375
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		6,523	9,054
Financing Receivable, Excluding Accrued Interest, Revolving		0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		6,803	9,709
Nonaccrual [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year		31	4
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year		3	51
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year		30	9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year		13	16
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year		4	3
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year		5	12
Financing Receivable, Excluding Accrued Interest, Revolving		23	158
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan		0	0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		$ 109	$ 253

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