Income Taxes Income Taxes (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrecognized Tax Benefits		$ 0
Restricted Stock Expense, Tax Benefit	$ 100
Effect of ASU Adoption [Member]
Cumulative effect of adoption of ASU 2018-02				$ 0	$ 0
Effect of ASU Adoption [Member] | Retained Earnings [Member]
Cumulative effect of adoption of ASU 2018-02			$ 1,344	$ 1,344