Fair Value of Financial Instruments - Assets and Liabilities Carried at Fair Value on a Non-recurring Basis, Fair Value (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Impaired loans	$ 1,430	$ 1,081
Other repossessed assets	208	239
Total assets	1,638	1,320
Fair Value, Inputs, Level 1 [Member]
Impaired loans	0	0
Other repossessed assets	0	0
Total assets	0	0
Fair Value, Inputs, Level 2 [Member]
Impaired loans	0	0
Other repossessed assets	0	0
Total assets	0	0
Fair Value, Inputs, Level 3 [Member]
Impaired loans	1,430	1,081
Other repossessed assets	208	239
Total assets	$ 1,638	$ 1,320