Employee Benefit Plans Schedule Of Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Net loss	$ 1,044	$ 1,143	$ 82
Amortization of net loss	(1,197)	(1,228)	(1,475)
Total recognized in other comprehensive income	(153)	(85)	(1,393)
Total recognized in net periodic benefit cost and other comprehensive (income) loss	880	$ 767	$ 213
Defined benefit plan, expected amortization of gain (loss), next fiscal year	$ (1,200)