Disclosures About Fair Value of Assets and Liabilities - Reconciliation of Beginning and Ending Balances of Recurring Fair Value Measurements using Significant Unobservable Level 3 Inputs (Details) - Fair Value, Measurements, Recurring - Available for Sale Securities - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Available for Sale Securities
Balance at beginning of the period	$ 2,936	$ 3,966	$ 3,328	$ 3,978
Included in other comprehensive income	37	1	80	(24)
Principal payments	2	3	(433)	16
Ending balance	$ 2,975	$ 3,970	$ 2,975	$ 3,970