Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Right-of-use asset	$ 3,976
Accounting Standards Update 2016-02 [Member]
Operating lease liabilities		$ 4,400
Right-of-use asset		$ 4,000
Accounting Standards Update 2018-02 [Member]
Reclassification amount from accumulated other comprehensive income related to Tax Cuts and jobs Act	$ 471