Benefit Plans (Accrued Pension Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Accumulated Benefit Obligation, end of year	$ 30,139	$ 25,777
Change in Projected Benefit Obligation
Projected Benefit Obligation, Beginning of Year	32,474	32,820
Service cost	998	1,200
Interest cost	1,393	1,242
Actuarial (Gain) Loss	3,449	(2,166)
Benefits Paid	(763)	(622)
Projected Benefit Obligation, End of Year	37,551	32,474
Change in Plan Assets
Plan Assets at Fair Value, Beginning of Year	0	0
Company contributions	763	622
Benefits Paid	(763)	(622)
Plan Assets at Fair Value, End of Year	0	0
Unfunded Status of the Plan	(37,551)	(32,474)
Amounts Recognized in Accumulated Other Comprehensive Income
Net loss	8,285	5,047
Total Pension Cost	$ 8,285	$ 5,047