Loans (Details 4) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	$ 38,818	$ 51,731
Recorded Investment, With no allowance		37,079	48,548
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	13,286	8,812
Recorded Investment, With an Allowance		12,132	8,060
Allowance for Loan Losses Allocated, With an Allowance		662	758
Residential Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	751	2,507
Recorded Investment, With no allowance		625	2,364
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	4,169	1,841
Recorded Investment, With an Allowance		4,129	1,814
Allowance for Loan Losses Allocated, With an Allowance		165	137
Residential Non Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	999	1,711
Recorded Investment, With no allowance		1,004	1,708
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,210	1,031
Recorded Investment, With an Allowance		1,214	1,024
Allowance for Loan Losses Allocated, With an Allowance		25	30
One To Four Family Residential Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,750	4,218
Recorded Investment, With no allowance		1,629	4,072
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	5,379	2,872
Recorded Investment, With an Allowance		5,343	2,838
Allowance for Loan Losses Allocated, With an Allowance		190	167
Multi Family Residential Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,530	2,095
Recorded Investment, With no allowance		1,537	2,102
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	44	175
Recorded Investment, With an Allowance		45	176
Allowance for Loan Losses Allocated, With an Allowance		2	7
Commercial Real Estate Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	7,086	12,273
Recorded Investment, With no allowance		5,835	11,804
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	3,656	2,007
Recorded Investment, With an Allowance		3,172	1,546
Allowance for Loan Losses Allocated, With an Allowance		40	44
Commercial Real Estate Non Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,913	3,085
Recorded Investment, With no allowance		1,748	2,925
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	624	651
Recorded Investment, With an Allowance		485	593
Allowance for Loan Losses Allocated, With an Allowance		20	28
Agriculture Land [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	13,675	13,029
Recorded Investment, With no allowance		13,883	13,185
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	281	293
Recorded Investment, With an Allowance		279	292
Allowance for Loan Losses Allocated, With an Allowance		5	14
Commercial Real Estate Other Receivables [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	471	981
Recorded Investment, With no allowance		479	768
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,130	909
Recorded Investment, With an Allowance		713	708
Allowance for Loan Losses Allocated, With an Allowance		32	32
Commercial Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	23,145	29,368
Recorded Investment, With no allowance		21,945	28,682
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	5,691	3,860
Recorded Investment, With an Allowance		4,649	3,139
Allowance for Loan Losses Allocated, With an Allowance		97	118
Construction [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	0
Recorded Investment, With no allowance		0	0
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	0	0
Recorded Investment, With an Allowance		0	0
Allowance for Loan Losses Allocated, With an Allowance		0	0
Commercial Working Capital [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	9,657	5,462
Recorded Investment, With no allowance		9,420	5,422
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	526	447
Recorded Investment, With an Allowance		528	449
Allowance for Loan Losses Allocated, With an Allowance		62	77
Commercial Loans Other [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	2,736	9,916
Recorded Investment, With no allowance		2,548	7,644
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	456	854
Recorded Investment, With an Allowance		454	858
Allowance for Loan Losses Allocated, With an Allowance		55	110
Commercial Loan [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	12,393	15,378
Recorded Investment, With no allowance		11,968	13,066
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	982	1,301
Recorded Investment, With an Allowance		982	1,307
Allowance for Loan Losses Allocated, With an Allowance		117	187
Home Equity and Improvement [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	630
Recorded Investment, With no allowance		0	584
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,159	596
Recorded Investment, With an Allowance		1,082	592
Allowance for Loan Losses Allocated, With an Allowance		255	279
Consumer Finance [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	42
Recorded Investment, With no allowance		0	42
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	31	8
Recorded Investment, With an Allowance		31	8
Allowance for Loan Losses Allocated, With an Allowance		$ 1	$ 0

[1] Presented gross of charge-offs