Disclosures About Fair Value of Assets and Liabilities, Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Recurring Basis [Member]
Asset measured at fair value on recurring basis [Abstract]
Assets measured at fair value	$ 0	$ 0
Nonrecurring Basis [Member]
Asset measured at fair value on nonrecurring basis [Abstract]
Impaired loans (collateral-dependent)	506	1,021
Foreclosed assets held for sale	110	100
Level 1 [Member] | Nonrecurring Basis [Member]
Asset measured at fair value on nonrecurring basis [Abstract]
Impaired loans (collateral-dependent)	0	0
Foreclosed assets held for sale	0	0
Level 2 [Member] | Nonrecurring Basis [Member]
Asset measured at fair value on nonrecurring basis [Abstract]
Impaired loans (collateral-dependent)	0	0
Foreclosed assets held for sale	0	0
Level 3 [Member] | Nonrecurring Basis [Member]
Asset measured at fair value on nonrecurring basis [Abstract]
Impaired loans (collateral-dependent)	506	1,021
Foreclosed assets held for sale	$ 110	$ 100