Loans and Allowance for Loan Losses - Schedule of Impaired Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Recorded Investment [Abstract]
Recorded investment, total	$ 5,637	$ 7,666
Unpaid Principal Balance [Abstract]
Unpaid principal balance, total	5,737	7,770
Related Allowance [Abstract]
Related allowance	383	403
Average Recorded Investment [Abstract]
Average recorded investment, total	5,851	8,669
Interest Income Recognized [Abstract]
Interest income recognized, total	97	299
Commercial and Industrial [Member]
Recorded Investment [Abstract]
Recorded investment, with no specific allowance recorded	43	61
Recorded investment, with an allowance recorded	532	461
Recorded investment, total	575	522
Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no specific allowance recorded	50	66
Unpaid principal balance, with an allowance recorded	532	493
Unpaid principal balance, total	582	559
Related Allowance [Abstract]
Related allowance	158	176
Average Recorded Investment [Abstract]
Average recorded investment, with no specific allowance recorded	53	84
Average recorded investment, with an allowance recorded	557	587
Average recorded investment, total	610	671
Interest Income Recognized [Abstract]
Interest income recognized, with no specific allowance recorded	0	2
Interest income recognized, with an allowance recorded	15	21
Interest income recognized, total	15	23
Commercial Real Estate [Member]
Recorded Investment [Abstract]
Recorded investment, with no specific allowance recorded	1,081	1,378
Recorded investment, with an allowance recorded	1,814	1,813
Recorded investment, total	2,895	3,191
Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no specific allowance recorded	1,081	1,378
Unpaid principal balance, with an allowance recorded	1,828	1,827
Unpaid principal balance, total	2,909	3,205
Related Allowance [Abstract]
Related allowance	139	159
Average Recorded Investment [Abstract]
Average recorded investment, with no specific allowance recorded	1,230	1,413
Average recorded investment, with an allowance recorded	1,813	1,998
Average recorded investment, total	3,043	3,411
Interest Income Recognized [Abstract]
Interest income recognized, with no specific allowance recorded	35	74
Interest income recognized, with an allowance recorded	19	39
Interest income recognized, total	54	113
Construction and Land [Member]
Recorded Investment [Abstract]
Recorded investment, with no specific allowance recorded	726	2,679
Recorded investment, total	726	2,679
Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no specific allowance recorded	726	2,679
Unpaid principal balance, total	726	2,679
Related Allowance [Abstract]
Related allowance	0	0
Average Recorded Investment [Abstract]
Average recorded investment, with no specific allowance recorded	740	3,289
Average recorded investment, total	740	3,289
Interest Income Recognized [Abstract]
Interest income recognized, with no specific allowance recorded	17	145
Interest income recognized, total	17	145
Residential Real Estate [Member]
Recorded Investment [Abstract]
Recorded investment, with no specific allowance recorded	690	707
Recorded investment, total	690	707
Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no specific allowance recorded	720	727
Unpaid principal balance, total	720	727
Related Allowance [Abstract]
Related allowance	0	0
Average Recorded Investment [Abstract]
Average recorded investment, with no specific allowance recorded	699	720
Average recorded investment, total	699	720
Interest Income Recognized [Abstract]
Interest income recognized, with no specific allowance recorded	8	18
Interest income recognized, total	8	18
Home Equity Lines of Credit [Member]
Recorded Investment [Abstract]
Recorded investment, with no specific allowance recorded	200
Recorded investment, with an allowance recorded	551	567
Recorded investment, total	751	567
Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no specific allowance recorded	200
Unpaid principal balance, with an allowance recorded	600	600
Unpaid principal balance, total	800	600
Related Allowance [Abstract]
Related allowance	86	68
Average Recorded Investment [Abstract]
Average recorded investment, with no specific allowance recorded	200
Average recorded investment, with an allowance recorded	559	578
Average recorded investment, total	759	578
Interest Income Recognized [Abstract]
Interest income recognized, with no specific allowance recorded	3
Interest income recognized, with an allowance recorded	0	0
Interest income recognized, total	$ 3	$ 0