Loans - Loans Receivable, Impaired, Interest Income, Cash Basis Method (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	$ 37,745	$ 51,105	$ 40,545	$ 50,037
Interest Income Recognized	404	480	1,595	1,334
Cash Basis Income Recognized	346	407	1,321	1,123
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	5,251	4,848	5,005	4,695
Interest Income Recognized	50	41	138	113
Cash Basis Income Recognized	50	41	131	110
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	2,113	2,371	2,078	2,424
Interest Income Recognized	28	31	106	105
Cash Basis Income Recognized	27	31	106	102
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	7,364	7,219	7,083	7,119
Interest Income Recognized	78	72	244	218
Cash Basis Income Recognized	77	72	237	212
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	0	0	0	0
Interest Income Recognized	0	0	0	0
Cash Basis Income Recognized	0	0	0	0
Multi-Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	175	1,582	604	1,744
Interest Income Recognized	5	22	32	71
Cash Basis Income Recognized	5	22	32	70
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	6,367	10,058	7,082	10,545
Interest Income Recognized	45	57	268	179
Cash Basis Income Recognized	45	49	222	156
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,898	2,321	1,943	2,815
Interest Income Recognized	19	19	70	76
Cash Basis Income Recognized	19	18	63	75
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	12,981	14,115	13,206	13,370
Interest Income Recognized	168	150	544	400
Cash Basis Income Recognized	114	96	405	248
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	479	1,223	810	1,346
Interest Income Recognized	13	25	66	75
Cash Basis Income Recognized	11	25	61	67
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	21,725	27,717	23,041	28,076
Interest Income Recognized	245	251	948	730
Cash Basis Income Recognized	189	188	751	546
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	6,224	10,181	7,302	8,059
Interest Income Recognized	55	91	281	196
Cash Basis Income Recognized	55	84	217	180
Commercial Loans Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,372	3,282	1,597	3,809
Interest Income Recognized	15	34	63	88
Cash Basis Income Recognized	14	31	59	83
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	7,596	13,463	8,899	11,868
Interest Income Recognized	70	125	344	284
Cash Basis Income Recognized	69	115	276	263
Home Equity and Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	868	1,091	893	1,195
Interest Income Recognized	6	9	26	29
Cash Basis Income Recognized	6	9	24	29
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	17	33	26	35
Interest Income Recognized	0	1	1	3
Cash Basis Income Recognized	$ 0	$ 1	$ 1	$ 3