Loans and Allowance for Loan Losses, Loan Portfolio Aging Analysis of Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	$ 1,814	$ 54
Current	631,144	601,848
Total	632,958	601,902
Total Loans > 90 Days & Accruing	1,097	0
30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	709	49
60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	5
Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	1,105	0
Construction & Development [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Current	83,291	87,267
Total	83,291	87,267
Total Loans > 90 Days & Accruing	0	0
Construction & Development [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Construction & Development [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Construction & Development [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
1-4 Family Commercial [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	77	8
Current	36,088	33,270
Total	36,165	33,278
Total Loans > 90 Days & Accruing	0	0
1-4 Family Commercial [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	69	8
1-4 Family Commercial [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
1-4 Family Commercial [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	8	0
Commercial Real Estate - Other [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Current	188,142	156,396
Total	188,142	156,396
Total Loans > 90 Days & Accruing	0	0
Commercial Real Estate - Other [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Commercial Real Estate - Other [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Commercial Real Estate - Other [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Commercial & Industrial [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	5
Current	256,100	248,389
Total	256,100	248,394
Total Loans > 90 Days & Accruing	0	0
Commercial & Industrial [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Commercial & Industrial [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	5
Commercial & Industrial [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Agricultural [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	1,638	0
Current	54,529	62,844
Total	56,167	62,844
Total Loans > 90 Days & Accruing	1,097	0
Agricultural [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	541	0
Agricultural [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Agricultural [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	1,097	0
Consumer [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	99	41
Current	12,994	13,682
Total	13,093	13,723
Total Loans > 90 Days & Accruing	0	0
Consumer [Member] | 30-59 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	99	41
Consumer [Member] | 60-89 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	0	0
Consumer [Member] | Greater than 90 Days [Member]
Loan Portfolio Aging Analysis of Recorded Investment [Abstract]
Past due	$ 0	$ 0