Loans and Allowance for Loan Losses, Part II (Details)		12 Months Ended
		Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 2,644,519,000	$ 1,939,501,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		28,037,000	10,919,000
Current		2,616,482,000	1,928,582,000
Total Loans Greater than 90 Days Past Due and Still Accruing		$ 0	0
Number of days past due when interest is not accrued		ninety days
Period of satisfactory performance before returning to accrual status		six months
Loans with a specific allowance [Abstract]
Recorded Balance		$ 32,603,000	13,345,000
Unpaid Principal Balance		34,178,000	14,747,000
Specific Allowance		3,279,000	623,000
Loans without a specific allowance [Abstract]
Recorded Balance		15,385,000	4,168,000
Unpaid Principal Balance		17,126,000	4,470,000
Total Loans [Abstract]
Recorded Balance		47,988,000	17,513,000
Unpaid Principal Balance		51,304,000	19,217,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		38,618,000	17,183,000	$ 17,359,000
Interest income recognized		619,000	51,000	119,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		27,298,000	16,659,000
Interest Lost on Nonaccrual Loans		1,189,000,000	471,000,000	133,000,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		9,956,000	8,898,000
Troubled Debt Restructuring, Allowance		1,418,000	37,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		9,956,000	8,898,000
Financing Receivable Modifications Performing Recorded Investment		2,451,000	854,000
Financing Receivables, Modifications during Period, Balance		$ 1,262,000	$ 6,691,000
Financing Receivables, Modifications during Period, Number		23	13
Subsequent Default, Number of Days Past Due		ninety days
Financing Receivable, Modifications, Subsequent Default, Number of Contracts		1	1
Other real estate owned		$ 2,534,000	$ 2,754,000
Mortgage Loans Secured By Real Estate In Foreclosure		425,000	404,000
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		2,511,889,000	1,860,539,000
Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		58,716,000	42,675,000
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		73,914,000	36,287,000
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		50,619,000	107,594,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		503,000	74,000
Current		50,116,000	107,520,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		2,559,000	0
Unpaid Principal Balance		2,559,000	0
Specific Allowance		14,000	0
Loans without a specific allowance [Abstract]
Recorded Balance		48,000	0
Unpaid Principal Balance		48,000	0
Total Loans [Abstract]
Recorded Balance		2,607,000	0
Unpaid Principal Balance		2,607,000	0
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		2,558,000	0	229,000
Interest income recognized		37,000	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		377,000	0
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		0	0
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		0	0
Construction and land development | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		49,794,000	107,140,000
Construction and land development | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		471,000	454,000
Construction and land development | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		354,000	0
Construction and land development | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Farm loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		231,700,000	127,183,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		804,000	396,000
Current		230,896,000	126,787,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		0	276,000
Unpaid Principal Balance		0	276,000
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		309,000	15,000
Unpaid Principal Balance		309,000	15,000
Total Loans [Abstract]
Recorded Balance		309,000	291,000
Unpaid Principal Balance		309,000	291,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		415,000	293,000	207,000
Interest income recognized		0	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		309,000	291,000
Farm loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		221,047,000	120,767,000
Farm loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		7,805,000	4,829,000
Farm loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		2,848,000	1,587,000
Farm loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
1-4 Family residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		373,518,000	293,667,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,478,000	5,328,000
Current		363,040,000	288,339,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		4,565,000	1,026,000
Unpaid Principal Balance		4,952,000	1,347,000
Specific Allowance		234,000	25,000
Loans without a specific allowance [Abstract]
Recorded Balance		3,680,000	2,239,000
Unpaid Principal Balance		4,769,000	2,664,000
Total Loans [Abstract]
Recorded Balance		8,245,000	3,265,000
Unpaid Principal Balance		9,721,000	4,011,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		6,297,000	3,267,000	2,988,000
Interest income recognized		144,000	29,000	22,000
Loans Receivable, Modifications, Still Accruing Interest		1,769,000	578,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		5,762,000	2,687,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		2,472,000	874,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		2,472,000	874,000
Financing Receivable Modifications Performing Recorded Investment		1,769,000	578,000
Financing Receivables, Modifications during Period, Balance		$ 688,000	$ 196,000
Financing Receivables, Modifications during Period, Number	[1]	16	3
1-4 Family residential properties | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 352,583,000	$ 282,441,000
1-4 Family residential properties | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		5,526,000	2,654,000
1-4 Family residential properties | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		15,409,000	8,572,000
1-4 Family residential properties | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Multifamily residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		184,051,000	61,798,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,104,000	0
Current		180,947,000	61,798,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		4,465,000	313,000
Unpaid Principal Balance		4,465,000	313,000
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		7,597,000	55,000
Unpaid Principal Balance		7,597,000	55,000
Total Loans [Abstract]
Recorded Balance		12,062,000	368,000
Unpaid Principal Balance		12,062,000	368,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,666,000	377,000	3,824,000
Interest income recognized		137,000	1,000	55,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		2,105,000	368,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		0	0
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		0	0
Financing Receivable Modifications Performing Recorded Investment		0	0
Multifamily residential properties | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		163,845,000	60,954,000
Multifamily residential properties | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		8,144,000	476,000
Multifamily residential properties | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		12,062,000	368,000
Multifamily residential properties | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		906,850,000	681,757,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		5,496,000	3,694,000
Current		901,354,000	678,063,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		12,517,000	5,544,000
Unpaid Principal Balance		12,804,000	5,565,000
Specific Allowance		1,553,000	531,000
Loans without a specific allowance [Abstract]
Recorded Balance		983,000	303,000
Unpaid Principal Balance		1,201,000	368,000
Total Loans [Abstract]
Recorded Balance		13,500,000	5,847,000
Unpaid Principal Balance		14,005,000	5,933,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,818,000	5,457,000	6,675,000
Interest income recognized		271,000	13,000	36,000
Loans Receivable, Modifications, Still Accruing Interest		676,000	251,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		8,457,000	5,596,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		1,706,000	1,376,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		1,706,000	1,376,000
Financing Receivable Modifications Performing Recorded Investment		676,000	251,000
Financing Receivables, Modifications during Period, Balance		$ 479,000	$ 814,000
Financing Receivables, Modifications during Period, Number	[1]	2	2
Commercial real estate | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 861,086,000	$ 647,208,000
Commercial real estate | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		16,035,000	16,941,000
Commercial real estate | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		29,729,000	17,608,000
Commercial real estate | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Loans secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		1,746,738,000	1,271,999,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		20,385,000	9,492,000
Current		1,726,353,000	1,262,507,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		24,106,000	7,159,000
Unpaid Principal Balance		24,780,000	7,501,000
Specific Allowance		1,801,000	556,000
Loans without a specific allowance [Abstract]
Recorded Balance		12,617,000	2,612,000
Unpaid Principal Balance		13,924,000	3,102,000
Total Loans [Abstract]
Recorded Balance		36,723,000	9,771,000
Unpaid Principal Balance		38,704,000	10,603,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		28,754,000	9,394,000	13,923,000
Interest income recognized		589,000	43,000	113,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		17,010,000	8,942,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		4,178,000	2,250,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		4,178,000	2,250,000
Financing Receivable Modifications Performing Recorded Investment		2,445,000	829,000
Financing Receivables, Modifications during Period, Balance		$ 1,167,000	$ 1,010,000
Financing Receivables, Modifications during Period, Number		18	5
Agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 135,877,000	$ 86,631,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		83,000	190,000
Current		135,794,000	86,441,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		36,000	212,000
Unpaid Principal Balance		504,000	1,009,000
Specific Allowance		0	2,000
Loans without a specific allowance [Abstract]
Recorded Balance		631,000	545,000
Unpaid Principal Balance		163,000	0
Total Loans [Abstract]
Recorded Balance		667,000	757,000
Unpaid Principal Balance		667,000	1,009,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		727,000	878,000	1,394,000
Interest income recognized		23,000	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		667,000	757,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		499,000	757,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		499,000	757,000
Financing Receivables, Modifications during Period, Balance		$ 67,000	$ 757,000
Financing Receivables, Modifications during Period, Number	[1]	2	4
Agricultural loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 127,863,000	$ 83,469,000
Agricultural loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		7,581,000	2,304,000
Agricultural loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		433,000	858,000
Agricultural loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		557,011,000	444,263,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		5,329,000	965,000
Current		551,682,000	443,298,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		8,292,000	5,774,000
Unpaid Principal Balance		8,723,000	6,037,000
Specific Allowance		1,475,000	64,000
Loans without a specific allowance [Abstract]
Recorded Balance		1,660,000	909,000
Unpaid Principal Balance		2,027,000	1,249,000
Total Loans [Abstract]
Recorded Balance		9,952,000	6,683,000
Unpaid Principal Balance		10,750,000	7,286,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,003,000	6,586,000	1,485,000
Interest income recognized		6,000	8,000	4,000
Loans Receivable, Modifications, Still Accruing Interest		962,000	25,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		8,990,000	6,658,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		5,112,000	5,690,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		5,112,000	5,690,000
Financing Receivable Modifications Performing Recorded Investment		0	25,000
Financing Receivables, Modifications during Period, Balance		$ 28,000	$ 4,924,000
Financing Receivables, Modifications during Period, Number	[1]	3	4
Commercial and industrial loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 535,186,000	$ 425,846,000
Commercial and industrial loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		9,967,000	11,492,000
Commercial and industrial loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		11,858,000	6,925,000
Commercial and industrial loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		91,516,000	29,749,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,543,000	272,000
Current		89,973,000	29,477,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		169,000	200,000
Unpaid Principal Balance		171,000	200,000
Specific Allowance		3,000	1,000
Loans without a specific allowance [Abstract]
Recorded Balance		471,000	102,000
Unpaid Principal Balance		1,006,000	119,000
Total Loans [Abstract]
Recorded Balance		640,000	302,000
Unpaid Principal Balance		1,177,000	319,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		131,000	325,000	557,000
Interest income recognized		1,000	0	2,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		625,000	302,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		167,000	201,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		167,000	201,000
Financing Receivable Modifications Performing Recorded Investment		6,000	0
Consumer loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		90,133,000	29,375,000
Consumer loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		177,000	5,000
Consumer loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		1,206,000	369,000
Consumer loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
All other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		113,377,000	106,859,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		697,000	0
Current		112,680,000	106,859,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		0	0
Unpaid Principal Balance		0	0
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		6,000	0
Unpaid Principal Balance		6,000	0
Total Loans [Abstract]
Recorded Balance		6,000	0
Unpaid Principal Balance		6,000	0
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		3,000	0	0
Interest income recognized		0	0	$ 0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		6,000	0
All other loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		110,352,000	103,339,000
All other loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		3,010,000	3,520,000
All other loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		15,000	0
All other loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Financing Receivables, 30 to 59 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		9,370,000	3,509,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		460,000	26,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,347,000	3,023,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,149,000	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,349,000	90,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		6,305,000	3,139,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		63,000	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,417,000	192,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		888,000	178,000
Financing Receivables, 30 to 59 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		697,000	0
Financing Receivables, 60 to 89 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,353,000	726,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		43,000	48,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		804,000	0
Financing Receivables, 60 to 89 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,051,000	538,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		89,000	38,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,987,000	624,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	32,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,000	3,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		356,000	67,000
Financing Receivables, 60 to 89 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		14,314,000	6,684,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	396,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,080,000	1,767,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,955,000	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,058,000	3,566,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,093,000	5,729,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		20,000	158,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,902,000	770,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		299,000	27,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		$ 0	$ 0

[1] Type of modifications:(a) Reduction of stated interest rate of loan(b) Change in payment terms(c) Extension of maturity date(d) Permanent reduction of the recorded investment