Loans Held for Investment - Schedule of Recorded Investment in Criticized Loans by Class and Credit Quality Indicator (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Impaired financing receivable, recorded investment	$ 190,800,000		$ 190,800,000
Commitments to purchase or sell	0	$ 0	0	$ 0
Proceeds from sale of loans held-for-investment	0	$ 0
Non-owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	468,200,000		468,200,000		$ 512,000,000.0
2021	855,000,000.0		855,000,000.0		470,600,000
2020	704,800,000		704,800,000		242,300,000
2019	573,300,000		573,300,000		151,100,000
2018	318,400,000		318,400,000		77,300,000
Prior	698,200,000		698,200,000		425,000,000.0
Revolving Loans Amortized Cost Basis	30,400,000		30,400,000		15,300,000
Total	3,648,300,000		3,648,300,000		1,893,600,000
Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	7,857,700,000		7,857,700,000		3,971,500,000
Land acquisition & development
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	79,100,000		79,100,000		113,800,000
2021	155,800,000		155,800,000		41,800,000
2020	34,000,000.0		34,000,000.0		34,200,000
2019	26,100,000		26,100,000		15,400,000
2018	15,400,000		15,400,000		20,200,000
Prior	32,600,000		32,600,000		21,200,000
Revolving Loans Amortized Cost Basis	12,700,000		12,700,000		1,200,000
Total	355,700,000		355,700,000		247,800,000
Loans held for investment	355,700,000		355,700,000		247,800,000
Residential
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	73,100,000		73,100,000		112,400,000
2021	138,800,000		138,800,000		7,400,000
2020	400,000		400,000		13,700,000
2019	9,700,000		9,700,000		900,000
2018	800,000		800,000		400,000
Prior	6,600,000		6,600,000		0
Revolving Loans Amortized Cost Basis	215,400,000		215,400,000		127,200,000
Total	444,800,000		444,800,000		262,000,000.0
Loans held for investment	444,800,000		444,800,000		262,000,000.0
Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	198,000,000.0		198,000,000.0		209,700,000
2021	432,000,000.0		432,000,000.0		141,400,000
2020	210,700,000		210,700,000		118,800,000
2019	108,900,000		108,900,000		27,600,000
2018	1,900,000		1,900,000		0
Prior	0		0		500,000
Revolving Loans Amortized Cost Basis	7,500,000		7,500,000		0
Total	959,000,000.0		959,000,000.0		498,000,000.0
Loans held for investment	959,000,000.0		959,000,000.0		498,000,000.0
Residential
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	2,060,400,000		2,060,400,000		1,538,200,000
Total construction loans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	1,759,500,000		1,759,500,000		1,007,800,000
Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	117,400,000		117,400,000		62,400,000
2021	203,200,000		203,200,000		38,600,000
2020	131,600,000		131,600,000		37,300,000
2019	75,800,000		75,800,000		23,300,000
2018	85,600,000		85,600,000		13,200,000
Prior	155,600,000		155,600,000		33,300,000
Revolving Loans Amortized Cost Basis	52,300,000		52,300,000		5,800,000
Total	821,500,000		821,500,000		213,900,000
Loans held for investment	821,500,000		821,500,000		213,900,000
Total real estate loans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	12,499,100,000		12,499,100,000		6,731,400,000
Indirect consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	164,900,000		164,900,000		273,100,000
2021	219,500,000		219,500,000		209,100,000
2020	162,500,000		162,500,000		108,700,000
2019	80,100,000		80,100,000		64,200,000
2018	46,400,000		46,400,000		37,100,000
Prior	60,500,000		60,500,000		45,400,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	733,900,000		733,900,000		737,600,000
Loans held for investment	733,900,000		733,900,000		737,600,000
Direct consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	31,700,000		31,700,000		42,600,000
2021	41,400,000		41,400,000		27,900,000
2020	24,700,000		24,700,000		15,000,000.0
2019	12,600,000		12,600,000		13,400,000
2018	9,600,000		9,600,000		5,800,000
Prior	11,400,000		11,400,000		7,600,000
Revolving Loans Amortized Cost Basis	25,900,000		25,900,000		16,900,000
Total	157,300,000		157,300,000		129,200,000
Loans held for investment	157,300,000		157,300,000		129,200,000
Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	192,200,000		192,200,000		139,600,000
Loans held for investment	74,800,000		74,800,000		64,900,000
Total consumer loans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	966,000,000.0		966,000,000.0		931,700,000
Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
Loans held for investment	3,036,000,000		3,036,000,000		1,475,500,000
Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022					40,200,000
2021					21,000,000.0
2020					9,700,000
2019					8,300,000
2018					2,700,000
Prior					2,000,000.0
Revolving Loans Amortized Cost Basis					118,500,000
Total					202,400,000
Loans held for investment	672,000,000.0		672,000,000.0		203,900,000
Owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	451,900,000		451,900,000		457,800,000
2021	805,200,000		805,200,000		322,400,000
2020	570,200,000		570,200,000		241,200,000
2019	320,100,000		320,100,000		163,800,000
2018	255,500,000		255,500,000		100,700,000
Prior	928,700,000		928,700,000		356,600,000
Revolving Loans Amortized Cost Basis	25,800,000		25,800,000		14,200,000
Total	3,357,400,000		3,357,400,000		1,656,700,000
Multi-family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	152,300,000		152,300,000		129,100,000
2021	212,800,000		212,800,000		118,600,000
2020	222,800,000		222,800,000		43,900,000
2019	55,200,000		55,200,000		15,400,000
2018	82,700,000		82,700,000		36,000,000.0
Prior	123,000,000.0		123,000,000.0		76,700,000
Revolving Loans Amortized Cost Basis	3,200,000		3,200,000		1,500,000
Total	852,000,000.0		852,000,000.0		421,200,000
Commercial and floor plans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	338,600,000		338,600,000		396,300,000
2021	460,900,000		460,900,000		179,900,000
2020	263,000,000.0		263,000,000.0		96,900,000
2019	158,000,000.0		158,000,000.0		76,900,000
2018	155,000,000.0		155,000,000.0		50,700,000
Prior	218,400,000		218,400,000		97,700,000
Revolving Loans Amortized Cost Basis	855,700,000		855,700,000		234,300,000
Total	2,449,600,000		2,449,600,000		1,132,700,000
Commercial purpose secured by 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	107,100,000		107,100,000		96,200,000
2021	149,100,000		149,100,000		56,400,000
2020	71,700,000		71,700,000		28,600,000
2019	33,600,000		33,600,000		24,200,000
2018	34,900,000		34,900,000		15,600,000
Prior	49,500,000		49,500,000		34,100,000
Revolving Loans Amortized Cost Basis	25,100,000		25,100,000		14,500,000
Total	471,000,000.0		471,000,000.0		269,600,000
Agriculture Portfolio Segment [Member]
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	129,000,000.0		129,000,000.0
2021	104,800,000		104,800,000
2020	42,900,000		42,900,000
2019	15,600,000		15,600,000
2018	15,600,000		15,600,000
Prior	3,100,000		3,100,000
Revolving Loans Amortized Cost Basis	359,000,000.0		359,000,000.0
Total	670,000,000.0		670,000,000.0
Residential 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	83,600,000		83,600,000		360,900,000
2021	448,600,000		448,600,000		477,300,000
2020	563,600,000		563,600,000		74,700,000
2019	106,100,000		106,100,000		27,500,000
2018	34,300,000		34,300,000		25,900,000
Prior	298,500,000		298,500,000		177,300,000
Revolving Loans Amortized Cost Basis	300,000		300,000		0
Total	1,535,000,000		1,535,000,000		1,143,600,000
Consumer Home Equity and HELOC
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	10,200,000		10,200,000		11,400,000
2021	10,100,000		10,100,000		7,000,000.0
2020	5,800,000		5,800,000		4,000,000.0
2019	3,900,000		3,900,000		4,800,000
2018	6,500,000		6,500,000		4,200,000
Prior	20,800,000		20,800,000		12,500,000
Revolving Loans Amortized Cost Basis	468,100,000		468,100,000		350,700,000
Total	525,400,000		525,400,000		394,600,000
Pass | Non-owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	458,600,000		458,600,000		507,900,000
2021	817,200,000		817,200,000		452,200,000
2020	677,900,000		677,900,000		237,900,000
2019	536,000,000.0		536,000,000.0		150,400,000
2018	251,200,000		251,200,000		76,300,000
Prior	641,700,000		641,700,000		409,000,000.0
Revolving Loans Amortized Cost Basis	30,400,000		30,400,000		15,300,000
Total	3,413,000,000		3,413,000,000		1,849,000,000
Pass | Land acquisition & development
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	79,100,000		79,100,000		113,000,000.0
2021	151,900,000		151,900,000		41,500,000
2020	33,800,000		33,800,000		34,200,000
2019	26,100,000		26,100,000		14,800,000
2018	15,200,000		15,200,000		19,800,000
Prior	31,700,000		31,700,000		20,800,000
Revolving Loans Amortized Cost Basis	12,700,000		12,700,000		1,200,000
Total	350,500,000		350,500,000		245,300,000
Pass | Residential
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	73,100,000		73,100,000		112,400,000
2021	138,800,000		138,800,000		7,000,000.0
2020	400,000		400,000		13,700,000
2019	9,700,000		9,700,000		900,000
2018	800,000		800,000		0
Prior	6,200,000		6,200,000		0
Revolving Loans Amortized Cost Basis	215,400,000		215,400,000		127,200,000
Total	444,400,000		444,400,000		261,200,000
Pass | Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	198,000,000.0		198,000,000.0		209,700,000
2021	432,000,000.0		432,000,000.0		141,400,000
2020	187,600,000		187,600,000		118,800,000
2019	87,200,000		87,200,000		27,600,000
2018	1,900,000		1,900,000		0
Prior	0		0		500,000
Revolving Loans Amortized Cost Basis	7,500,000		7,500,000		0
Total	914,200,000		914,200,000		498,000,000.0
Pass | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	112,600,000		112,600,000		58,300,000
2021	182,200,000		182,200,000		36,900,000
2020	122,200,000		122,200,000		35,100,000
2019	70,000,000.0		70,000,000.0		22,600,000
2018	53,900,000		53,900,000		11,800,000
Prior	134,100,000		134,100,000		28,100,000
Revolving Loans Amortized Cost Basis	29,800,000		29,800,000		4,900,000
Total	704,800,000		704,800,000		197,700,000
Pass | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022					35,100,000
2021					16,200,000
2020					9,000,000.0
2019					5,400,000
2018					2,100,000
Prior					1,600,000
Revolving Loans Amortized Cost Basis					108,900,000
Total					178,300,000
Pass | Owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	438,600,000		438,600,000		452,700,000
2021	793,800,000		793,800,000		314,900,000
2020	564,200,000		564,200,000		235,000,000.0
2019	307,800,000		307,800,000		151,000,000.0
2018	239,700,000		239,700,000		94,500,000
Prior	887,200,000		887,200,000		322,500,000
Revolving Loans Amortized Cost Basis	25,100,000		25,100,000		14,200,000
Total	3,256,400,000		3,256,400,000		1,584,800,000
Pass | Multi-family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	152,300,000		152,300,000		129,100,000
2021	212,800,000		212,800,000		118,600,000
2020	185,300,000		185,300,000		43,900,000
2019	54,000,000.0		54,000,000.0		15,400,000
2018	36,500,000		36,500,000		36,000,000.0
Prior	122,700,000		122,700,000		76,700,000
Revolving Loans Amortized Cost Basis	3,200,000		3,200,000		1,500,000
Total	766,800,000		766,800,000		421,200,000
Pass | Commercial and floor plans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	318,500,000		318,500,000		394,200,000
2021	447,600,000		447,600,000		165,700,000
2020	256,900,000		256,900,000		94,500,000
2019	151,300,000		151,300,000		73,500,000
2018	149,100,000		149,100,000		47,100,000
Prior	202,600,000		202,600,000		91,300,000
Revolving Loans Amortized Cost Basis	821,700,000		821,700,000		224,700,000
Total	2,347,700,000		2,347,700,000		1,091,000,000
Pass | Commercial purpose secured by 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	106,500,000		106,500,000		94,900,000
2021	147,200,000		147,200,000		55,000,000.0
2020	69,900,000		69,900,000		27,800,000
2019	32,700,000		32,700,000		23,100,000
2018	32,400,000		32,400,000		15,300,000
Prior	47,600,000		47,600,000		32,200,000
Revolving Loans Amortized Cost Basis	25,000,000.0		25,000,000.0		14,400,000
Total	461,300,000		461,300,000		262,700,000
Pass | Agriculture Portfolio Segment [Member]
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	103,100,000		103,100,000
2021	91,100,000		91,100,000
2020	37,200,000		37,200,000
2019	13,400,000		13,400,000
2018	10,600,000		10,600,000
Prior	1,200,000		1,200,000
Revolving Loans Amortized Cost Basis	343,800,000		343,800,000
Total	600,400,000		600,400,000
Other Assets Especially Mentioned | Non-owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	6,100,000		6,100,000		200,000
2021	25,000,000.0		25,000,000.0		3,100,000
2020	1,900,000		1,900,000		2,100,000
2019	18,000,000.0		18,000,000.0		0
2018	33,800,000		33,800,000		0
Prior	24,500,000		24,500,000		3,600,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	109,300,000		109,300,000		9,000,000.0
Other Assets Especially Mentioned | Land acquisition & development
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		0
2021	0		0		100,000
2020	0		0		0
2019	0		0		0
2018	200,000		200,000		100,000
Prior	300,000		300,000		300,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	500,000		500,000		500,000
Other Assets Especially Mentioned | Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	0		0
2020	23,100,000		23,100,000
2019	0		0
2018	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Total	23,100,000		23,100,000
Other Assets Especially Mentioned | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	1,500,000		1,500,000		100,000
2021	2,500,000		2,500,000		1,300,000
2020	2,300,000		2,300,000		1,200,000
2019	1,800,000		1,800,000		100,000
2018	9,700,000		9,700,000		100,000
Prior	5,900,000		5,900,000		900,000
Revolving Loans Amortized Cost Basis	9,900,000		9,900,000		900,000
Total	33,600,000		33,600,000		4,600,000
Other Assets Especially Mentioned | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022					200,000
2021					4,100,000
2020					100,000
2019					400,000
2018					600,000
Prior					300,000
Revolving Loans Amortized Cost Basis					7,000,000.0
Total					12,700,000
Other Assets Especially Mentioned | Owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	3,000,000.0		3,000,000.0		1,300,000
2021	5,600,000		5,600,000		3,200,000
2020	3,000,000.0		3,000,000.0		1,500,000
2019	7,100,000		7,100,000		7,400,000
2018	2,100,000		2,100,000		3,500,000
Prior	12,700,000		12,700,000		13,800,000
Revolving Loans Amortized Cost Basis	300,000		300,000		0
Total	33,800,000		33,800,000		30,700,000
Other Assets Especially Mentioned | Commercial and floor plans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	6,600,000		6,600,000		800,000
2021	7,100,000		7,100,000		11,400,000
2020	2,500,000		2,500,000		800,000
2019	4,100,000		4,100,000		800,000
2018	2,300,000		2,300,000		3,000,000.0
Prior	6,100,000		6,100,000		2,300,000
Revolving Loans Amortized Cost Basis	22,400,000		22,400,000		7,000,000.0
Total	51,100,000		51,100,000		26,100,000
Other Assets Especially Mentioned | Commercial purpose secured by 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	200,000		200,000		0
2021	400,000		400,000		200,000
2020	600,000		600,000		200,000
2019	600,000		600,000		500,000
2018	1,900,000		1,900,000		100,000
Prior	600,000		600,000		600,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	4,300,000		4,300,000		1,600,000
Other Assets Especially Mentioned | Agriculture Portfolio Segment [Member]
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	3,100,000		3,100,000
2021	2,200,000		2,200,000
2020	600,000		600,000
2019	1,300,000		1,300,000
2018	700,000		700,000
Prior	300,000		300,000
Revolving Loans Amortized Cost Basis	10,900,000		10,900,000
Total	19,100,000		19,100,000
Substandard | Non-owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	3,200,000		3,200,000		3,900,000
2021	12,800,000		12,800,000		15,300,000
2020	25,000,000.0		25,000,000.0		2,300,000
2019	17,700,000		17,700,000		700,000
2018	31,600,000		31,600,000		1,000,000.0
Prior	32,000,000.0		32,000,000.0		12,400,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	122,300,000		122,300,000		35,600,000
Substandard | Land acquisition & development
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		800,000
2021	700,000		700,000		200,000
2020	200,000		200,000		0
2019	0		0		600,000
2018	0		0		300,000
Prior	600,000		600,000		100,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	1,500,000		1,500,000		2,000,000.0
Substandard | Residential
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		0
2021	0		0		400,000
2020	0		0		0
2019	0		0		0
2018	0		0		400,000
Prior	400,000		400,000		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	400,000		400,000		800,000
Substandard | Commercial
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	0		0
2020	0		0
2019	21,700,000		21,700,000
2018	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Total	21,700,000		21,700,000
Substandard | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	3,300,000		3,300,000		4,000,000.0
2021	17,600,000		17,600,000		400,000
2020	4,000,000.0		4,000,000.0		1,000,000.0
2019	3,200,000		3,200,000		600,000
2018	22,000,000.0		22,000,000.0		1,300,000
Prior	13,700,000		13,700,000		4,300,000
Revolving Loans Amortized Cost Basis	12,600,000		12,600,000		0
Total	76,400,000		76,400,000		11,600,000
Substandard | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022					4,900,000
2021					700,000
2020					600,000
2019					2,500,000
2018					0
Prior					100,000
Revolving Loans Amortized Cost Basis					2,600,000
Total					11,400,000
Substandard | Owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	10,300,000		10,300,000		3,800,000
2021	2,900,000		2,900,000		4,300,000
2020	3,000,000.0		3,000,000.0		4,700,000
2019	5,200,000		5,200,000		5,400,000
2018	4,300,000		4,300,000		2,700,000
Prior	26,800,000		26,800,000		20,300,000
Revolving Loans Amortized Cost Basis	400,000		400,000		0
Total	52,900,000		52,900,000		41,200,000
Substandard | Multi-family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	0		0
2020	37,500,000		37,500,000
2019	1,200,000		1,200,000
2018	46,200,000		46,200,000
Prior	300,000		300,000
Revolving Loans Amortized Cost Basis	0		0
Total	85,200,000		85,200,000
Substandard | Commercial and floor plans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	13,500,000		13,500,000		1,300,000
2021	1,500,000		1,500,000		2,800,000
2020	3,400,000		3,400,000		1,600,000
2019	2,600,000		2,600,000		2,600,000
2018	3,600,000		3,600,000		600,000
Prior	8,100,000		8,100,000		4,100,000
Revolving Loans Amortized Cost Basis	11,600,000		11,600,000		2,600,000
Total	44,300,000		44,300,000		15,600,000
Substandard | Commercial purpose secured by 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	400,000		400,000		1,300,000
2021	1,300,000		1,300,000		1,200,000
2020	1,200,000		1,200,000		600,000
2019	300,000		300,000		600,000
2018	600,000		600,000		200,000
Prior	1,300,000		1,300,000		1,300,000
Revolving Loans Amortized Cost Basis	100,000		100,000		100,000
Total	5,200,000		5,200,000		5,300,000
Substandard | Agriculture Portfolio Segment [Member]
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	22,800,000		22,800,000
2021	6,900,000		6,900,000
2020	5,100,000		5,100,000
2019	900,000		900,000
2018	1,800,000		1,800,000
Prior	700,000		700,000
Revolving Loans Amortized Cost Basis	4,300,000		4,300,000
Total	42,500,000		42,500,000
Doubtful | Non-owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	300,000		300,000
2021	0		0
2020	0		0
2019	1,600,000		1,600,000
2018	1,800,000		1,800,000
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Total	3,700,000		3,700,000
Doubtful | Land acquisition & development
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	3,200,000		3,200,000
2020	0		0
2019	0		0
2018	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Total	3,200,000		3,200,000
Doubtful | Agricultural
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	900,000		900,000
2020	3,100,000		3,100,000
2019	800,000		800,000
2018	0		0
Prior	1,900,000		1,900,000
Revolving Loans Amortized Cost Basis	0		0
Total	6,700,000		6,700,000
Doubtful | Owner occupied
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	2,900,000		2,900,000
2020	0		0
2019	0		0
2018	9,400,000		9,400,000
Prior	2,000,000.0		2,000,000.0
Revolving Loans Amortized Cost Basis	0		0
Total	14,300,000		14,300,000
Doubtful | Commercial and floor plans
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	4,700,000		4,700,000
2020	200,000		200,000
2019	0		0
2018	0		0
Prior	1,600,000		1,600,000
Revolving Loans Amortized Cost Basis	0		0
Total	6,500,000		6,500,000
Doubtful | Commercial purpose secured by 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	200,000		200,000
2020	0		0
2019	0		0
2018	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Total	200,000		200,000
Doubtful | Agriculture Portfolio Segment [Member]
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0
2021	4,600,000		4,600,000
2020	0		0
2019	0		0
2018	2,500,000		2,500,000
Prior	900,000		900,000
Revolving Loans Amortized Cost Basis	0		0
Total	8,000,000.0		8,000,000.0
Performing | Indirect consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	164,900,000		164,900,000		272,600,000
2021	218,800,000		218,800,000		208,600,000
2020	162,100,000		162,100,000		108,300,000
2019	79,800,000		79,800,000		64,000,000.0
2018	46,200,000		46,200,000		37,000,000.0
Prior	60,100,000		60,100,000		45,000,000.0
Revolving Loans Amortized Cost Basis	0		0		0
Total	731,900,000		731,900,000		735,500,000
Performing | Direct consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	31,700,000		31,700,000		42,500,000
2021	41,400,000		41,400,000		27,900,000
2020	24,700,000		24,700,000		15,000,000.0
2019	12,600,000		12,600,000		13,300,000
2018	9,600,000		9,600,000		5,800,000
Prior	11,300,000		11,300,000		7,600,000
Revolving Loans Amortized Cost Basis	25,900,000		25,900,000		16,900,000
Total	157,200,000		157,200,000		129,000,000.0
Performing | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	191,400,000		191,400,000		139,000,000.0
Performing | Residential 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	83,600,000		83,600,000		360,900,000
2021	448,600,000		448,600,000		477,000,000.0
2020	563,500,000		563,500,000		74,700,000
2019	106,000,000.0		106,000,000.0		27,500,000
2018	34,000,000.0		34,000,000.0		25,700,000
Prior	296,200,000		296,200,000		176,500,000
Revolving Loans Amortized Cost Basis	300,000		300,000		0
Total	1,532,200,000		1,532,200,000		1,142,300,000
Performing | Consumer Home Equity and HELOC
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	9,900,000		9,900,000		11,100,000
2021	9,700,000		9,700,000		7,000,000.0
2020	5,800,000		5,800,000		3,700,000
2019	3,800,000		3,800,000		4,800,000
2018	6,300,000		6,300,000		3,600,000
Prior	19,400,000		19,400,000		12,000,000.0
Revolving Loans Amortized Cost Basis	468,000,000.0		468,000,000.0		350,700,000
Total	522,900,000		522,900,000		392,900,000
Nonperforming | Indirect consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		500,000
2021	700,000		700,000		500,000
2020	400,000		400,000		400,000
2019	300,000		300,000		200,000
2018	200,000		200,000		100,000
Prior	400,000		400,000		400,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	2,000,000.0		2,000,000.0		2,100,000
Nonperforming | Direct consumer
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		100,000
2021	0		0		0
2020	0		0		0
2019	0		0		100,000
2018	0		0		0
Prior	100,000		100,000		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	100,000		100,000		200,000
Nonperforming | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	800,000		800,000		600,000
Nonperforming | Residential 1-4 family
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		0
2021	0		0		300,000
2020	100,000		100,000		0
2019	100,000		100,000		0
2018	300,000		300,000		200,000
Prior	2,300,000		2,300,000		800,000
Revolving Loans Amortized Cost Basis	0		0		0
Total	2,800,000		2,800,000		1,300,000
Nonperforming | Consumer Home Equity and HELOC
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	300,000		300,000		300,000
2021	400,000		400,000		0
2020	0		0		300,000
2019	100,000		100,000		0
2018	200,000		200,000		600,000
Prior	1,400,000		1,400,000		500,000
Revolving Loans Amortized Cost Basis	100,000		100,000		0
Total	2,500,000		2,500,000		1,700,000
Agriculture Portfolio Segment [Member] | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	2,000,000.0		2,000,000.0		1,500,000
Agriculture Portfolio Segment [Member] | Performing | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	2,000,000.0		2,000,000.0		1,500,000
Agriculture Portfolio Segment [Member] | Nonperforming | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	0		0		0
Commercial | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	115,400,000		115,400,000		73,200,000
Commercial | Performing | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	114,900,000		114,900,000		73,100,000
Commercial | Nonperforming | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	500,000		500,000		100,000
Total consumer loans | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	74,800,000		74,800,000		64,900,000
Total consumer loans | Performing | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	74,500,000		74,500,000		64,400,000
Total consumer loans | Nonperforming | Credit card
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items]
2022	$ 300,000		$ 300,000		$ 500,000