Qualified Affordable Housing Project Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Federal Home Loan Banks [Abstract]
Amortization Method Qualified Affordable Housing Project Investments	$ 3,100		$ 3,100		$ 3,300
Qualified Affordable Housing Project Investments, Commitment	923		923		$ 1,900
Amortization Method Qualified Affordable Housing Project Investments, Amortization	57	$ 52	172	$ 138
Affordable Housing Tax Credits and Other Tax Benefits Expected to Be Received			379
Affordable Housing Tax Credits and Other Tax Benefits, Amount	$ 94	$ 70	$ 285	$ 220