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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Available for Sale Securities
Balance at beginning of the period	$ 2,975	$ 3,970	$ 3,328	$ 3,978
Included in other comprehensive income	6	(35)	85	(59)
Principal payments	(85)	(620)	(517)	(604)
Ending balance	$ 2,896	$ 3,315	$ 2,896	$ 3,315