Loans and Allowance for Loan Losses, Part II (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 14,452,000		$ 14,452,000		$ 8,185,000
Current	1,853,110,000		1,853,110,000		1,817,807,000
Total Loans Receivable	1,867,562,000	$ 1,806,745,000	1,867,562,000	$ 1,806,745,000	1,825,992,000
Total Loans 90 Days & Accruing	0		$ 0		105,000
Number of days past due when interest is not accrued			ninety days
Period of satisfactory performance before returning to accrual status			not less than six months
Loans with a specific allowance [Abstract]
Recorded Balance	15,260,000		$ 15,260,000		5,266,000
Unpaid Principal Balance	17,339,000		17,339,000		5,385,000
Specific Allowance	295,000		295,000		858,000
Loans without a specific allowance [Abstract]
Recorded Balance	4,528,000		4,528,000		12,972,000
Unpaid Principal Balance	4,915,000		4,915,000		14,612,000
Total Loans [Abstract]
Recorded Balance	19,788,000		19,788,000		18,238,000
Unpaid Principal Balance	22,254,000		22,254,000		19,997,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	20,589,000	5,724,000	22,294,000	5,515,000
Interest income recognized	93,000	5,000	265,000	13,000
Loans Receivable, Modifications, Still Accruing Interest	99,000		99,000		196,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	13,784,000		13,784,000		12,053,000
Interest Lost on Nonaccrual Loans			366,000	$ 99,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	8,618,000		8,618,000		10,889,000
Financing Receivable Modifications Performing Recorded Investment	6,004,000		$ 6,004,000		6,185,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			6	10
Financing Receivables, Modifications during Period, Balance			$ 872,000	$ 746,000
Subsequent Default, Number of Days Past Due			90 days
Real Estate Acquired Through Foreclosure	2,229,000		$ 2,229,000		1,982,000
Other Repossessed Assets	35,000		35,000
Mortgage Loans Secured By Real Estate In Foreclosure			429,000		661,000
Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,779,571,000		1,779,571,000		1,769,460,000
Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	49,807,000		49,807,000		27,653,000
Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	38,184,000		38,184,000		28,879,000
Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due	267,000		267,000		0
Current	76,912,000		76,912,000		49,104,000
Total Loans Receivable	77,179,000		77,179,000		49,104,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	266,000		266,000		227,000
Unpaid Principal Balance	607,000		607,000		227,000
Specific Allowance	0		0		0
Loans without a specific allowance [Abstract]
Recorded Balance	0		0		0
Unpaid Principal Balance	0		0		0
Total Loans [Abstract]
Recorded Balance	266,000		266,000		227,000
Unpaid Principal Balance	607,000		607,000		227,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	267,000	231,000	98,000	231,000
Interest income recognized	0	0	0	$ 0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	266,000		266,000		227,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	0		$ 0		227,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			0	1
Financing Receivables, Modifications during Period, Balance			$ 0	$ 231,000
Construction and land development | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	76,913,000		76,913,000		48,877,000
Construction and land development | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Construction and land development | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	266,000		266,000		227,000
Construction and land development | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Agricultural real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	396,000		396,000		424,000
Current	125,700,000		125,700,000		125,684,000
Total Loans Receivable	126,096,000		126,096,000		126,108,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	276,000		276,000		0
Unpaid Principal Balance	276,000		276,000		0
Specific Allowance	0		0		0
Loans without a specific allowance [Abstract]
Recorded Balance	15,000		15,000		205,000
Unpaid Principal Balance	15,000		15,000		207,000
Total Loans [Abstract]
Recorded Balance	291,000		291,000		205,000
Unpaid Principal Balance	291,000		291,000		207,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	291,000	474,000	293,000	476,000
Interest income recognized	0	0	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	291,000		291,000		205,000
Agricultural real estate | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	119,958,000		119,958,000		118,934,000
Agricultural real estate | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	4,862,000		4,862,000		5,190,000
Agricultural real estate | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,276,000		1,276,000		1,984,000
Agricultural real estate | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,970,000		3,970,000		3,575,000
Current	297,927,000		297,927,000		322,840,000
Total Loans Receivable	301,897,000		301,897,000		326,415,000
Total Loans 90 Days & Accruing	0		0		105,000
Loans with a specific allowance [Abstract]
Recorded Balance	1,417,000		1,417,000		997,000
Unpaid Principal Balance	1,738,000		1,738,000		997,000
Specific Allowance	125,000		125,000		6,000
Loans without a specific allowance [Abstract]
Recorded Balance	1,623,000		1,623,000		2,497,000
Unpaid Principal Balance	2,106,000		2,106,000		3,207,000
Total Loans [Abstract]
Recorded Balance	3,040,000		3,040,000		3,494,000
Unpaid Principal Balance	3,844,000		3,844,000		4,204,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	3,047,000	1,572,000	3,003,000	1,344,000
Interest income recognized	5,000	3,000	16,000	10,000
Loans Receivable, Modifications, Still Accruing Interest	410,000	514,000	410,000	$ 514,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	2,630,000		2,630,000		2,890,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	843,000		843,000		1,753,000
Financing Receivable Modifications Performing Recorded Investment	410,000		$ 410,000		603,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			1	1
Financing Receivables, Modifications during Period, Balance			$ 17,000	$ 47,000
1-4 Family residential properties | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	290,989,000		290,989,000		318,921,000
1-4 Family residential properties | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,359,000		2,359,000		918,000
1-4 Family residential properties | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	8,549,000		8,549,000		6,576,000
1-4 Family residential properties | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,550,000		4,550,000		240,000
Current	67,773,000		67,773,000		82,960,000
Total Loans Receivable	72,323,000		72,323,000		83,200,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	7,425,000		7,425,000		528,000
Unpaid Principal Balance	7,425,000		7,425,000		528,000
Specific Allowance	11,000		11,000		0
Loans without a specific allowance [Abstract]
Recorded Balance	0		0		3,419,000
Unpaid Principal Balance	0		0		3,547,000
Total Loans [Abstract]
Recorded Balance	7,425,000		7,425,000		3,947,000
Unpaid Principal Balance	7,425,000		7,425,000		4,075,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	8,017,000	535,000	10,839,000	539,000
Interest income recognized	80,000	0	229,000	0
Loans Receivable, Modifications, Still Accruing Interest	5,217,000	3,430,000	5,217,000	3,430,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	2,208,000		2,208,000		528,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	5,217,000		5,217,000		3,419,000
Financing Receivable Modifications Performing Recorded Investment	5,217,000		5,217,000		3,419,000
Multifamily residential properties | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	64,938,000		64,938,000		81,018,000
Multifamily residential properties | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	89,000		89,000		1,651,000
Multifamily residential properties | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	7,296,000		7,296,000		531,000
Multifamily residential properties | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,227,000		3,227,000		2,421,000
Current	643,957,000		643,957,000		627,714,000
Total Loans Receivable	647,184,000		647,184,000		630,135,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	4,391,000		4,391,000		863,000
Unpaid Principal Balance	4,547,000		4,547,000		884,000
Specific Allowance	29,000		29,000		0
Loans without a specific allowance [Abstract]
Recorded Balance	1,297,000		1,297,000		6,224,000
Unpaid Principal Balance	1,474,000		1,474,000		6,802,000
Total Loans [Abstract]
Recorded Balance	5,688,000		5,688,000		7,087,000
Unpaid Principal Balance	6,021,000		6,021,000		7,686,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	5,762,000	1,097,000	4,638,000	1,064,000
Interest income recognized	6,000	1,000	14,000	2,000
Loans Receivable, Modifications, Still Accruing Interest	347,000	2,152,000	347,000	$ 2,152,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	5,341,000		5,341,000		4,971,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	671,000		671,000		4,125,000
Financing Receivable Modifications Performing Recorded Investment	347,000		$ 347,000		2,116,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			0	1
Financing Receivables, Modifications during Period, Balance			$ 0	$ 43,000
Commercial real estate | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	609,203,000		609,203,000		610,025,000
Commercial real estate | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	20,082,000		20,082,000		5,229,000
Commercial real estate | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	17,899,000		17,899,000		14,881,000
Commercial real estate | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	233,000		233,000		486,000
Current	81,150,000		81,150,000		86,199,000
Total Loans Receivable	81,383,000		81,383,000		86,685,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	237,000		237,000		1,345,000
Unpaid Principal Balance	1,080,000		1,080,000		1,345,000
Specific Allowance	0		0		660,000
Loans without a specific allowance [Abstract]
Recorded Balance	597,000		597,000		43,000
Unpaid Principal Balance	7,000		7,000		66,000
Total Loans [Abstract]
Recorded Balance	834,000		834,000		1,388,000
Unpaid Principal Balance	1,087,000		1,087,000		1,411,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	834,000	755,000	900,000	696,000
Interest income recognized	0	0	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	834,000		834,000		1,388,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	828,000		$ 828,000		0
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			4
Financing Receivables, Modifications during Period, Balance			$ 828,000
Agricultural loans | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	78,356,000		78,356,000		81,922,000
Agricultural loans | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,128,000		2,128,000		3,271,000
Agricultural loans | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	899,000		899,000		1,492,000
Agricultural loans | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,612,000		1,612,000		799,000
Current	441,861,000		441,861,000		408,234,000
Total Loans Receivable	443,473,000		443,473,000		409,033,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	1,038,000		1,038,000		1,093,000
Unpaid Principal Balance	1,456,000		1,456,000		1,191,000
Specific Allowance	128,000		128,000		192,000
Loans without a specific allowance [Abstract]
Recorded Balance	911,000		911,000		378,000
Unpaid Principal Balance	1,218,000		1,218,000		572,000
Total Loans [Abstract]
Recorded Balance	1,949,000		1,949,000		1,471,000
Unpaid Principal Balance	2,674,000		2,674,000		1,763,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	2,075,000	744,000	2,216,000	777,000
Interest income recognized	2,000	1,000	6,000	1,000
Loans Receivable, Modifications, Still Accruing Interest	29,000	46,000	29,000	$ 46,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	1,920,000		1,920,000		1,430,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	849,000		849,000		1,040,000
Financing Receivable Modifications Performing Recorded Investment	29,000		$ 29,000		41,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			1	6
Financing Receivables, Modifications during Period, Balance			$ 27,000	$ 405,000
Commercial and industrial loans | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	424,306,000		424,306,000		397,762,000
Commercial and industrial loans | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	17,560,000		17,560,000		8,485,000
Commercial and industrial loans | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,607,000		1,607,000		2,786,000
Commercial and industrial loans | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	197,000		197,000		240,000
Current	29,877,000		29,877,000		37,788,000
Total Loans Receivable	30,074,000		30,074,000		38,028,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	210,000		210,000		213,000
Unpaid Principal Balance	210,000		210,000		213,000
Specific Allowance	2,000		2,000		0
Loans without a specific allowance [Abstract]
Recorded Balance	85,000		85,000		206,000
Unpaid Principal Balance	95,000		95,000		211,000
Total Loans [Abstract]
Recorded Balance	295,000		295,000		419,000
Unpaid Principal Balance	305,000		305,000		424,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	296,000	306,000	307,000	388,000
Interest income recognized	0	0	0	0
Loans Receivable, Modifications, Still Accruing Interest	1,000	9,000	1,000	$ 9,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	294,000		294,000		414,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	210,000		210,000		325,000
Financing Receivable Modifications Performing Recorded Investment	1,000		$ 1,000		6,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			0	1
Financing Receivables, Modifications during Period, Balance			$ 0	$ 20,000
Consumer loans | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	29,669,000		29,669,000		37,624,000
Consumer loans | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	13,000		13,000		17,000
Consumer loans | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	392,000		392,000		387,000
Consumer loans | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Current	87,953,000		87,953,000		77,284,000
Total Loans Receivable	87,953,000		87,953,000		77,284,000
Total Loans 90 Days & Accruing	0		0		0
Loans with a specific allowance [Abstract]
Recorded Balance	0		0		0
Unpaid Principal Balance	0		0		0
Specific Allowance	0		0		0
Loans without a specific allowance [Abstract]
Recorded Balance	0		0		0
Unpaid Principal Balance	0		0		0
Total Loans [Abstract]
Recorded Balance	0		0		0
Unpaid Principal Balance	0		0		0
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	0	10,000
Interest income recognized	0	0
All other loans | Pass
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	85,239,000		85,239,000		74,377,000
All other loans | Special Mention
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,714,000		2,714,000		2,892,000
All other loans | Substandard
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		15,000
All other loans | Doubtful
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	0		0		0
Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	12,410,000		12,410,000		6,660,000
Current	1,212,269,000		1,212,269,000		1,208,302,000
Total Loans Receivable	1,224,679,000		1,224,679,000		1,214,962,000
Total Loans 90 Days & Accruing	0		0		105,000
Loans with a specific allowance [Abstract]
Recorded Balance	13,775,000		13,775,000		2,615,000
Unpaid Principal Balance	14,593,000		14,593,000		2,636,000
Specific Allowance	165,000		165,000		6,000
Loans without a specific allowance [Abstract]
Recorded Balance	2,935,000		2,935,000		12,345,000
Unpaid Principal Balance	3,595,000		3,595,000		13,763,000
Total Loans [Abstract]
Recorded Balance	16,710,000		16,710,000		14,960,000
Unpaid Principal Balance	18,188,000		18,188,000		16,399,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans	17,384,000	3,909,000	18,871,000	3,654,000
Interest income recognized	91,000	$ 4,000	259,000	$ 12,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans	10,736,000		10,736,000		8,821,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance	6,731,000		6,731,000		9,524,000
Financing Receivable Modifications Performing Recorded Investment	5,974,000		$ 5,974,000		6,138,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Financing Receivables, Modifications during Period, Number			1	3
Financing Receivables, Modifications during Period, Balance			$ 17,000	$ 321,000
Financing Receivables, 30 to 59 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,325,000		3,325,000		4,468,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,542,000		1,542,000		1,854,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	968,000		968,000		1,662,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	14,000		14,000		365,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	613,000		613,000		395,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	188,000		188,000		192,000
Financing Receivables, 30 to 59 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,510,000		2,510,000		3,516,000
Financing Receivables, 60 to 89 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,359,000		6,359,000		1,836,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		131,000
Financing Receivables, 60 to 89 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	282,000		282,000		713,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,494,000		4,494,000		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,129,000		1,129,000		716,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	41,000		41,000		84,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	407,000		407,000		155,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,000		6,000		37,000
Financing Receivables, 60 to 89 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	5,905,000		5,905,000		1,560,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,768,000		4,768,000		1,881,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due	267,000		267,000		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Agricultural real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	396,000		396,000		293,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,146,000		2,146,000		1,008,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due	56,000		56,000		240,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,130,000		1,130,000		43,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	178,000		178,000		37,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	592,000		592,000		249,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,000		3,000		11,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0		0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 3,995,000		$ 3,995,000		$ 1,584,000