Loans and Allowance for Loan Losses - Loan Portfolio Credit Exposure (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	$ 689,891		$ 3,783,210
Term loans amortized cost basis by origination, before current fiscal year	3,857,753		6,965,524
Term loans amortized cost basis by origination, two years before current fiscal year	7,025,247		7,504,636
Term loans amortized cost basis by origination, three years before current fiscal year	7,401,028		4,404,254
Term loans amortized cost basis by origination, four years before current fiscal year	4,191,039		3,061,633
Term loans amortized cost basis by origination, prior	8,806,033		6,216,447
Amortized Cost Basis	10,790,821		10,932,133
Converted to Term Loans	548,065		536,653
Total loans	43,309,877		43,404,490
Gross charge-offs
Year One	0		10,540
Year Two	16,764		17,269
Year Three	4,363		38,758
Year Four	3,019		34,274
Year Five	2,430		6,975
Prior	11,671		30,674
Amortized Cost Basis	12,289		44,152
Converted to Term Loans	32		432
Total	50,568	$ 25,335	183,074
Total consumer
Gross charge-offs
Total	8,914	17,366
Charge-off of previously established reserves for credit losses associated with the transfer to held for sale		$ 6,600	31,300
Total commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	424,011		1,986,629
Term loans amortized cost basis by origination, before current fiscal year	2,075,060		2,619,103
Term loans amortized cost basis by origination, two years before current fiscal year	2,571,811		3,001,532
Term loans amortized cost basis by origination, three years before current fiscal year	2,938,283		1,841,896
Term loans amortized cost basis by origination, four years before current fiscal year	1,806,916		1,460,858
Term loans amortized cost basis by origination, prior	4,083,685		2,803,594
Amortized Cost Basis	8,762,865		8,836,288
Converted to Term Loans	68,665		48,593
Total loans	22,731,296		22,598,493
Gross charge-offs
Year One	0		9,367
Year Two	15,969		3,436
Year Three	2,699		8,608
Year Four	617		26,368
Year Five	1,723		2,709
Prior	7,358		4,933
Amortized Cost Basis	9,577		30,696
Converted to Term Loans	0		203
Total	37,943		86,320
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	272,634		1,120,645
Term loans amortized cost basis by origination, before current fiscal year	1,157,911		1,063,760
Term loans amortized cost basis by origination, two years before current fiscal year	995,518		1,463,949
Term loans amortized cost basis by origination, three years before current fiscal year	1,430,932		821,205
Term loans amortized cost basis by origination, four years before current fiscal year	801,219		727,833
Term loans amortized cost basis by origination, prior	1,907,892		1,266,232
Amortized Cost Basis	7,982,131		7,947,128
Converted to Term Loans	68,665		48,593
Total loans	14,616,902		14,459,345
Gross charge-offs
Year One	0		9,367
Year Two	15,893		3,436
Year Three	2,699		8,175
Year Four	617		19,532
Year Five	592		1,165
Prior	1,394		2,071
Amortized Cost Basis	9,577		30,696
Converted to Term Loans	0		203
Total	30,772		74,645
Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	151,377		865,984
Term loans amortized cost basis by origination, before current fiscal year	917,149		1,555,343
Term loans amortized cost basis by origination, two years before current fiscal year	1,576,293		1,537,583
Term loans amortized cost basis by origination, three years before current fiscal year	1,507,351		1,020,691
Term loans amortized cost basis by origination, four years before current fiscal year	1,005,697		733,025
Term loans amortized cost basis by origination, prior	2,175,793		1,537,362
Amortized Cost Basis	780,734		889,160
Converted to Term Loans	0		0
Total loans	8,114,394		8,139,148
Gross charge-offs
Year One	0		0
Year Two	76		0
Year Three	0		433
Year Four	0		6,836
Year Five	1,131		1,544
Prior	5,964		2,862
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total	7,171		11,675
Total commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	123,001		902,990
Term loans amortized cost basis by origination, before current fiscal year	917,721		3,376,295
Term loans amortized cost basis by origination, two years before current fiscal year	3,530,940		3,229,919
Term loans amortized cost basis by origination, three years before current fiscal year	3,235,873		1,211,860
Term loans amortized cost basis by origination, four years before current fiscal year	1,069,679		1,151,962
Term loans amortized cost basis by origination, prior	3,063,574		2,138,962
Amortized Cost Basis	253,231		304,770
Converted to Term Loans	0		0
Total loans	12,194,019		12,316,758
Gross charge-offs
Year One	0		546
Year Two	103		7,685
Year Three	0		5,668
Year Four	0		3,878
Year Five	0		1,893
Prior	3,608		22,671
Amortized Cost Basis	0		3,109
Converted to Term Loans	0		0
Total	3,711		45,450
Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	73,903		595,623
Term loans amortized cost basis by origination, before current fiscal year	662,121		3,145,727
Term loans amortized cost basis by origination, two years before current fiscal year	3,326,462		3,074,155
Term loans amortized cost basis by origination, three years before current fiscal year	3,094,235		1,163,152
Term loans amortized cost basis by origination, four years before current fiscal year	1,028,616		1,102,689
Term loans amortized cost basis by origination, prior	2,916,569		2,020,221
Amortized Cost Basis	208,975		261,737
Converted to Term Loans	0		0
Total loans	11,310,881		11,363,304
Gross charge-offs
Year One	0		546
Year Two	0		7,685
Year Three	0		5,668
Year Four	0		3,801
Year Five	0		1,893
Prior	3,608		22,647
Amortized Cost Basis	0		3,109
Converted to Term Loans	0		0
Total	3,608		45,349
Total commercial real estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	39,741		172,554
Term loans amortized cost basis by origination, before current fiscal year	149,351		144,699
Term loans amortized cost basis by origination, two years before current fiscal year	131,602		119,697
Term loans amortized cost basis by origination, three years before current fiscal year	110,620		32,577
Term loans amortized cost basis by origination, four years before current fiscal year	31,343		30,064
Term loans amortized cost basis by origination, prior	73,225		56,766
Amortized Cost Basis	44,256		42,145
Converted to Term Loans	0		0
Total loans	580,138		598,502
Gross charge-offs
Year One	0		0
Year Two	103		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		24
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total	103		24
Total commercial real estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	9,357		134,813
Term loans amortized cost basis by origination, before current fiscal year	106,249		85,869
Term loans amortized cost basis by origination, two years before current fiscal year	72,876		36,067
Term loans amortized cost basis by origination, three years before current fiscal year	31,018		16,131
Term loans amortized cost basis by origination, four years before current fiscal year	9,720		19,209
Term loans amortized cost basis by origination, prior	73,780		61,975
Amortized Cost Basis	0		888
Converted to Term Loans	0		0
Total loans	303,000		354,952
Gross charge-offs
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		77
Year Five	0		0
Prior	0		0
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total	0		77
Total consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	142,879		893,591
Term loans amortized cost basis by origination, before current fiscal year	864,972		970,126
Term loans amortized cost basis by origination, two years before current fiscal year	922,496		1,273,185
Term loans amortized cost basis by origination, three years before current fiscal year	1,226,872		1,350,498
Term loans amortized cost basis by origination, four years before current fiscal year	1,314,444		448,813
Term loans amortized cost basis by origination, prior	1,658,774		1,273,891
Amortized Cost Basis	1,774,725		1,791,075
Converted to Term Loans	479,400		488,060
Total loans	8,384,562		8,489,239
Gross charge-offs
Year One	0		627
Year Two	692		6,148
Year Three	1,664		24,482
Year Four	2,402		4,028
Year Five	707		2,373
Prior	705		3,070
Amortized Cost Basis	2,712		10,347
Converted to Term Loans	32		229
Total	8,914		51,304
Total consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	103,260		758,049
Term loans amortized cost basis by origination, before current fiscal year	753,706		787,708
Term loans amortized cost basis by origination, two years before current fiscal year	757,737		1,049,959
Term loans amortized cost basis by origination, three years before current fiscal year	1,027,302		1,235,310
Term loans amortized cost basis by origination, four years before current fiscal year	1,209,784		419,989
Term loans amortized cost basis by origination, prior	1,532,499		1,160,673
Amortized Cost Basis	314		35
Converted to Term Loans	0		0
Total loans	5,384,602		5,411,723
Gross charge-offs
Year One	0		0
Year Two	0		108
Year Three	0		251
Year Four	0		403
Year Five	3		402
Prior	102		965
Amortized Cost Basis	0		5
Converted to Term Loans	0		0
Total	105		2,134
Total consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	1,324,948		1,319,339
Converted to Term Loans	479,400		488,060
Total loans	1,804,348		1,807,399
Gross charge-offs
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		79
Amortized Cost Basis	0		819
Converted to Term Loans	32		229
Total	32		1,127
Total consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	180,663		194,141
Converted to Term Loans	0		0
Total loans	180,663		194,141
Gross charge-offs
Year One	0		0
Year Two	0		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Amortized Cost Basis	2,055		7,165
Converted to Term Loans	0		0
Total	2,055		7,165
Total consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	39,619		135,542
Term loans amortized cost basis by origination, before current fiscal year	111,266		182,418
Term loans amortized cost basis by origination, two years before current fiscal year	164,759		223,226
Term loans amortized cost basis by origination, three years before current fiscal year	199,570		115,188
Term loans amortized cost basis by origination, four years before current fiscal year	104,660		28,824
Term loans amortized cost basis by origination, prior	126,275		113,218
Amortized Cost Basis	268,800		277,560
Converted to Term Loans	0		0
Total loans	1,014,949		1,075,976
Gross charge-offs
Year One	0		627
Year Two	692		6,040
Year Three	1,664		24,231
Year Four	2,402		3,625
Year Five	704		1,971
Prior	603		2,026
Amortized Cost Basis	657		2,358
Converted to Term Loans	0		0
Total	6,722		40,878
Pass | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	268,543		1,078,790
Term loans amortized cost basis by origination, before current fiscal year	1,131,289		1,040,742
Term loans amortized cost basis by origination, two years before current fiscal year	951,139		1,408,178
Term loans amortized cost basis by origination, three years before current fiscal year	1,374,948		782,069
Term loans amortized cost basis by origination, four years before current fiscal year	759,640		636,341
Term loans amortized cost basis by origination, prior	1,791,712		1,236,433
Amortized Cost Basis	7,642,905		7,623,255
Converted to Term Loans	62,340		46,908
Total loans	13,982,516		13,852,716
Pass | Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	151,179		859,887
Term loans amortized cost basis by origination, before current fiscal year	910,990		1,521,469
Term loans amortized cost basis by origination, two years before current fiscal year	1,534,357		1,501,405
Term loans amortized cost basis by origination, three years before current fiscal year	1,455,287		958,620
Term loans amortized cost basis by origination, four years before current fiscal year	917,280		710,634
Term loans amortized cost basis by origination, prior	2,055,182		1,401,416
Amortized Cost Basis	685,510		782,180
Converted to Term Loans	0		0
Total loans	7,709,785		7,735,611
Pass | Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	73,903		593,540
Term loans amortized cost basis by origination, before current fiscal year	659,935		3,140,041
Term loans amortized cost basis by origination, two years before current fiscal year	3,247,783		2,863,327
Term loans amortized cost basis by origination, three years before current fiscal year	2,867,625		1,161,697
Term loans amortized cost basis by origination, four years before current fiscal year	982,612		1,052,638
Term loans amortized cost basis by origination, prior	2,771,003		1,900,744
Amortized Cost Basis	208,975		261,737
Converted to Term Loans	0		0
Total loans	10,811,836		10,973,724
Pass | Total commercial real estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	38,726		167,729
Term loans amortized cost basis by origination, before current fiscal year	147,560		142,930
Term loans amortized cost basis by origination, two years before current fiscal year	130,546		119,054
Term loans amortized cost basis by origination, three years before current fiscal year	109,133		31,928
Term loans amortized cost basis by origination, four years before current fiscal year	30,807		29,740
Term loans amortized cost basis by origination, prior	71,238		55,243
Amortized Cost Basis	44,211		42,099
Converted to Term Loans	0		0
Total loans	572,221		588,723
Pass | Total commercial real estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	9,357		105,609
Term loans amortized cost basis by origination, before current fiscal year	105,680		84,962
Term loans amortized cost basis by origination, two years before current fiscal year	72,386		35,993
Term loans amortized cost basis by origination, three years before current fiscal year	30,945		16,131
Term loans amortized cost basis by origination, four years before current fiscal year	9,348		18,616
Term loans amortized cost basis by origination, prior	70,900		59,605
Amortized Cost Basis	0		888
Converted to Term Loans	0		0
Total loans	298,616		321,804
Pass | Total consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	103,248		757,485
Term loans amortized cost basis by origination, before current fiscal year	753,144		784,898
Term loans amortized cost basis by origination, two years before current fiscal year	754,846		1,044,442
Term loans amortized cost basis by origination, three years before current fiscal year	1,021,620		1,219,397
Term loans amortized cost basis by origination, four years before current fiscal year	1,193,450		410,511
Term loans amortized cost basis by origination, prior	1,499,082		1,136,541
Amortized Cost Basis	314		35
Converted to Term Loans	0		0
Total loans	5,325,704		5,353,309
Pass | Total consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	1,315,317		1,308,934
Converted to Term Loans	474,095		482,679
Total loans	1,789,412		1,791,613
Pass | Total consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	178,762		192,217
Converted to Term Loans	0		0
Total loans	178,762		192,217
Pass | Total consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	39,619		134,969
Term loans amortized cost basis by origination, before current fiscal year	110,171		181,455
Term loans amortized cost basis by origination, two years before current fiscal year	163,968		219,415
Term loans amortized cost basis by origination, three years before current fiscal year	195,667		114,006
Term loans amortized cost basis by origination, four years before current fiscal year	103,235		28,256
Term loans amortized cost basis by origination, prior	125,442		112,724
Amortized Cost Basis	268,696		277,368
Converted to Term Loans	0		0
Total loans	1,006,798		1,068,193
Special Mention | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		5,298
Term loans amortized cost basis by origination, before current fiscal year	6,489		8,276
Term loans amortized cost basis by origination, two years before current fiscal year	31,616		20,027
Term loans amortized cost basis by origination, three years before current fiscal year	18,630		1,950
Term loans amortized cost basis by origination, four years before current fiscal year	926		2,552
Term loans amortized cost basis by origination, prior	11,096		8,412
Amortized Cost Basis	144,154		141,580
Converted to Term Loans	1,865		0
Total loans	214,776		188,095
Special Mention | Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		1,709
Term loans amortized cost basis by origination, before current fiscal year	1,911		9,114
Term loans amortized cost basis by origination, two years before current fiscal year	6,835		22,562
Term loans amortized cost basis by origination, three years before current fiscal year	22,203		2,593
Term loans amortized cost basis by origination, four years before current fiscal year	29,121		4,689
Term loans amortized cost basis by origination, prior	30,108		48,640
Amortized Cost Basis	42,918		79,031
Converted to Term Loans	0		0
Total loans	133,096		168,338
Special Mention | Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		1,616
Term loans amortized cost basis by origination, two years before current fiscal year	75,686		169,550
Term loans amortized cost basis by origination, three years before current fiscal year	97,938		0
Term loans amortized cost basis by origination, four years before current fiscal year	43,937		48,429
Term loans amortized cost basis by origination, prior	81,937		33,903
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	299,498		253,498
Special Mention | Total commercial real estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,015		3,104
Term loans amortized cost basis by origination, before current fiscal year	959		947
Term loans amortized cost basis by origination, two years before current fiscal year	994		0
Term loans amortized cost basis by origination, three years before current fiscal year	378		184
Term loans amortized cost basis by origination, four years before current fiscal year	181		0
Term loans amortized cost basis by origination, prior	308		311
Amortized Cost Basis	0		1
Converted to Term Loans	0		0
Total loans	3,835		4,547
Special Mention | Total commercial real estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		496
Term loans amortized cost basis by origination, two years before current fiscal year	490		0
Term loans amortized cost basis by origination, three years before current fiscal year	31		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	1,258		774
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	1,779		1,270
Substandard | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	4,091		36,557
Term loans amortized cost basis by origination, before current fiscal year	20,133		14,742
Term loans amortized cost basis by origination, two years before current fiscal year	12,763		35,744
Term loans amortized cost basis by origination, three years before current fiscal year	16,678		37,186
Term loans amortized cost basis by origination, four years before current fiscal year	40,428		88,940
Term loans amortized cost basis by origination, prior	105,084		21,032
Amortized Cost Basis	181,232		182,069
Converted to Term Loans	4,460		1,685
Total loans	384,869		417,955
Substandard | Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	198		4,388
Term loans amortized cost basis by origination, before current fiscal year	4,248		24,760
Term loans amortized cost basis by origination, two years before current fiscal year	35,101		13,616
Term loans amortized cost basis by origination, three years before current fiscal year	29,861		59,478
Term loans amortized cost basis by origination, four years before current fiscal year	59,296		17,702
Term loans amortized cost basis by origination, prior	90,503		87,306
Amortized Cost Basis	35,900		27,949
Converted to Term Loans	0		0
Total loans	255,107		235,199
Substandard | Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		2,083
Term loans amortized cost basis by origination, before current fiscal year	2,186		4,070
Term loans amortized cost basis by origination, two years before current fiscal year	2,993		41,278
Term loans amortized cost basis by origination, three years before current fiscal year	128,672		1,455
Term loans amortized cost basis by origination, four years before current fiscal year	2,067		1,622
Term loans amortized cost basis by origination, prior	56,528		75,850
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	192,446		126,358
Substandard | Total commercial real estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		1,721
Term loans amortized cost basis by origination, before current fiscal year	832		822
Term loans amortized cost basis by origination, two years before current fiscal year	62		643
Term loans amortized cost basis by origination, three years before current fiscal year	1,109		465
Term loans amortized cost basis by origination, four years before current fiscal year	355		324
Term loans amortized cost basis by origination, prior	1,679		1,212
Amortized Cost Basis	45		45
Converted to Term Loans	0		0
Total loans	4,082		5,232
Substandard | Total commercial real estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		29,204
Term loans amortized cost basis by origination, before current fiscal year	569		411
Term loans amortized cost basis by origination, two years before current fiscal year	0		74
Term loans amortized cost basis by origination, three years before current fiscal year	42		0
Term loans amortized cost basis by origination, four years before current fiscal year	372		593
Term loans amortized cost basis by origination, prior	1,622		1,596
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	2,605		31,878
Substandard | Total consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	12		564
Term loans amortized cost basis by origination, before current fiscal year	562		2,810
Term loans amortized cost basis by origination, two years before current fiscal year	2,891		5,517
Term loans amortized cost basis by origination, three years before current fiscal year	5,682		15,913
Term loans amortized cost basis by origination, four years before current fiscal year	16,334		9,478
Term loans amortized cost basis by origination, prior	33,375		23,662
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	58,856		57,944
Substandard | Total consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	9,462		10,231
Converted to Term Loans	5,221		5,297
Total loans	14,683		15,528
Substandard | Total consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	648		702
Converted to Term Loans	0		0
Total loans	648		702
Substandard | Total consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		573
Term loans amortized cost basis by origination, before current fiscal year	1,095		963
Term loans amortized cost basis by origination, two years before current fiscal year	791		3,811
Term loans amortized cost basis by origination, three years before current fiscal year	3,903		1,182
Term loans amortized cost basis by origination, four years before current fiscal year	1,425		568
Term loans amortized cost basis by origination, prior	833		494
Amortized Cost Basis	79		192
Converted to Term Loans	0		0
Total loans	8,126		7,783
Doubtful | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0
Term loans amortized cost basis by origination, before current fiscal year	0
Term loans amortized cost basis by origination, two years before current fiscal year	0
Term loans amortized cost basis by origination, three years before current fiscal year	20,676
Term loans amortized cost basis by origination, four years before current fiscal year	225
Term loans amortized cost basis by origination, prior	0
Amortized Cost Basis	13,206
Converted to Term Loans	0
Total loans	34,107
Doubtful | Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0
Term loans amortized cost basis by origination, before current fiscal year	0
Term loans amortized cost basis by origination, two years before current fiscal year	0
Term loans amortized cost basis by origination, three years before current fiscal year	0
Term loans amortized cost basis by origination, four years before current fiscal year	0
Term loans amortized cost basis by origination, prior	0
Amortized Cost Basis	16,406
Converted to Term Loans	0
Total loans	16,406
Doubtful | Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	7,096		9,714
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	7,096		9,714
Loss | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		355
Amortized Cost Basis	634		224
Converted to Term Loans	0		0
Total loans	634		579
Loss | Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	5		10
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	5		10
Loss | Total consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	42		470
Amortized Cost Basis	0		0
Converted to Term Loans	0		0
Total loans	42		470
Loss | Total consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	169		174
Converted to Term Loans	84		84
Total loans	253		258
Loss | Total consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0		0
Term loans amortized cost basis by origination, before current fiscal year	0		0
Term loans amortized cost basis by origination, two years before current fiscal year	0		0
Term loans amortized cost basis by origination, three years before current fiscal year	0		0
Term loans amortized cost basis by origination, four years before current fiscal year	0		0
Term loans amortized cost basis by origination, prior	0		0
Amortized Cost Basis	1,253		1,222
Converted to Term Loans	0		0
Total loans	1,253		$ 1,222
Loss | Total consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0
Term loans amortized cost basis by origination, before current fiscal year	0
Term loans amortized cost basis by origination, two years before current fiscal year	0
Term loans amortized cost basis by origination, three years before current fiscal year	0
Term loans amortized cost basis by origination, four years before current fiscal year	0
Term loans amortized cost basis by origination, prior	0
Amortized Cost Basis	25
Converted to Term Loans	0
Total loans	$ 25